Oninit® Archive
Results for “onstat -g ioa”
CHK REQ times suddenly getting very long
Hi Clive, At a guess as you mention the large storage footprint, something related to: IC98458 AN INCREASING NUMBER OF CHUNKS CAN INCREASE THE DURATION OF AN ONMODE -C BLOCK This was reported by me way back in 2013 and there is some sort of fix in 11.70.xC9. Given it was thirteen…
Petty comments on Version 15 ...
Hi ... just because ... 1. Warning: Parameter duplicated in config file (/products/15.01.FC1/etc/onconfig_leap16_j_a). Only the first occurrence will be used. (USERMAPPING) > grep USERMAPPING onconfig.std # USERMAPPING - Control access to the server for users without operating US…
What triggers a blocking checkpoint?
Hi Jacob, when looking at the numbers, you can see that the amount of pages dumped during the long checkpoint was not significantly higher than the other ones. I would have expected a huge increase in the number of dirty pages handled during the checkpoint. Are you sure there is …
What prevents a RSS to roll forward as fast as its primary?
Hi, Sometimes due to the syncronization points I mentioned having LESS apply threads can be faster. Try OFF_RECVRY_THREADS 31, 23,17,11 and see which comes out best. Also try SEC_APPLY_POLLTIME 100 and 50 and 0. When the lag happens send onstat -g cluster on the primary (*) onsta…
Question about fix list in 12.10.FC15W1
Hi SangGyu, 12.10.xC15W1 is mainly for IBM Informix HQ - Log4j issue. Please see below link, Security Bulletin: IBM Informix Dynamic Server is vulnerable to arbitrary code execution due to Apache Log4j (CVE-2021-44228) There are two more "internal" defects fixed along with above …
DIRECT I/O (KAIO) Disabled in RHEL 9
Hi Vladimir, I've made al kind of testing and I identified the DIRECT I/O disabled by Informix in related to logical disk sector size, no matter if this disks are joined in a RAID or accessed directly or the filesystem used: ext2, ext3 or xfs If the hard disk has a logical sector…
flags (onstat -g ses)
Hello - Yes , the flags showed no waiting for Lock or for another ressource - PDQ is set to 10% - 20 vp CPU with eff around 50% - mpstat shows no cpu with 100%, but i will run it again at different times onstat -g glo Individual virtual processors: vp pid class usercpu syscpu tot…
Informix on RHEL on VMWare - cooked vs. raw devices recommendation
I thought the decision to deprecate raw devices had been reversed but some googling has discovered it has actually been removed from Linux as of kernel 5.14 (source https://www.phoronix.com/scan.php?page=news_item&px=Linux-5.14-Dropping-RAW-Driver). In our production environment …
Slow running backup
variety of reasons. a very simple test will be to take a level 0 archive to /dev/null. If the time is still slow then its probably due to either a lot of database activity or i/o transfer rate back from the storage where the db chunks reside. If fast then it's the transfer rat…
Upgrade with Success from Informix 11.70 to Informix 14.10
Are you running IBM Informix Dynamic Server (IDS) 11.70? Join this session to help with your plans to migrate from Informix 11.70 to Informix 14.10 with ease. Please note that Informix 11.70 will reach End of Service (EOS) on September 30, 2020. Upgrade with Success from Inform…
Block during checkpoint
Hi, As Art said, the info in the online.log message may be an indicator of checkpoint slowness, but you NEED to view onstat -g ckp to have a final diagnostic on what is happening. A long checkpoint may be acceptable if you have low values (i.e say below 0.5 secs or less) in the W…
RE: IBM Informix Dynamic Server Version 12.10.UC4W1
Hello SangGyu, many thanks for your response. I also believe that it is the defect you indicated. Your information will help me decide what to do. Have a nice day. Greetings Heinz WESTFLEISCH SCE mit beschränkter Haftung, Hauptsitz: Brockhoffstr. 11, 48143 Münster Amtsgericht Mün…
IBM Informix Dynamic Server Version 12.10.UC4W1
Hi there, operating system: SUSE Linux Enterprise Server 11 (x86_64) VERSION = 11 PATCHLEVEL = 4 We occasionally have the following problem with a database: 02/07/20 11:51:44 rowalter: PTOCOPYVC: collen (0xb4) > max_vc_len (0x33) (cmpoff: 0x22, uncmpoff 0x22 02/07/20 11:51:44 …
ONCHECK & checkpoints
well it could. oncheck cDI does a very comprehensive check (matching table rowids to the index etc.) and depending on what had to be flushed to disk during the checkpoint may have resulted in contention over i/o resources. This assumes your Informix instance is configured properl…
listener-thread@soc_be.c:3073: err = -25582:
Adding Version details Informix Version : IBM Informix Dynamic Server Version 12.10.FC6 O/S Version : Red Hat Enterprise Linux Server release 6.9 Thanks & Regards, Karthik Rajan…
High CPU IO Wait
Hi, We are having recently having some CPU IO Wait issues. The CPU IO Wait value stays arount 15% . I've also noticed that CPU Eff is very low: IBM Informix Dynamic Server Version 12.10.FC7 -- On-Line -- Up 231 days 02:25:26 -- 5343628 Kbytes MT global info: sessions threads vp…
Informix and speculative execution
Hi all, I have seen speculative execution patches for Firefox and SQL Server. Are there speculative execution patches for Informix in progress? There is no IBM Flash for Informix Dynamic Server and speculaative execution! Regards, David.…
Assert Failed: Page Check Error in initchunk
Hi every bady, I have restart Informix server and now I'm not able to bring to database up : 16:14:07 IBM Informix Dynamic Server Version 11.70.FC4 Software Serial Number AAA#B000000 16:14:07 Assert Failed: Page Check Error in initchunk 16:14:07 IBM Informix Dynamic Server Versio…
Misconceptions about Update Statistics
Hi Dirk! I noticed using IDS versions after v10.00 that the optimizer demands more accurate statistics information from tables that grows significantly every day. Based on my perception, I tried to use dostats (that improved performance) but wasn't enough. So I developed a stat…
Rovoke insert permission but still can insert
I am doing it at the command line in the server directly in the directory C:\\\\Program Files\\\\IBM\\\\IBM Informix Dynamic Server\\\\11.50\\\\bin…
STDIO Parameter
Can someone tell me what this means in layman terms? You can set the TAPEDEV configuration parameter to STDIO to direct back up and restore operations to standard I/O instead of to a device. What is standard I/O? I know our database server uses raw disk space for its data. Does…
IDS 12.10 - Query Slow
You can certainly use SET EXPLAIN for the queries against temp tables, that works just fine. Can you run the queries under SET EXPLAIN on both the old and new servers to get both query plans? I don't know the HPUX Virtualization platform, but in general virtualized environments …
srt* files PSORT_DBTEMP DBSPACETEMP strange
Hi, DBSPACETEMP are in the onconfig and the engine has been restarted afterwards. Yes the counter changes within the onstat -d/-D but quite small portions (and i know that programmers using A LOT of temp tables. 70000102ff72828 100 5 25 20834672 20178684 /usr/informix/dbs/temp…
Execute SQL statements in parallel (esqlc)
IBM Informix Dynamic Server Version 11.50.FC6W2 IBM Informix CSDK Version 3.50, IBM Informix-ESQL Version 3.50.FC6 SunOS cycle 5.10 Generic_150400-30 sun4u sparc SUNW,SPARC-Enterprise cc: Sun C 5.9 SunOS_sparc Patch 124867-01 2007/07/12 Is it possible to execute SQL statements i…
12.10.FC6 Mac port released
IBM Informix 12.10.FC6 release for Mac OS is officially available! John F. Miller III STSM, Lead Architect miller3@us.ibm.com 503-747-1366 IBM Informix Dynamic Server (IDS)…
SDS_ENABLE is not set error after server restart
Hi and thanks for the follow-up! Here are the results you asked for: onstat -g sds verbose IBM Informix Dynamic Server Version 11.10.FC2 -- On-Line (Prim) -- Up 151 days 19:08:06 -- 116497336 Kbytes Number of SDS servers:0 Updater node alias name :chisec oncheck -pr Validat…
RE: Re: onstat -g iof sanity check [36143]
John what version of 11.70 did the onstat -g ioh come in?? Bruce Simms Data Base Services TALX, Provider of Equifax Workforce Solutions 2330 Ball Drive St. Louis, MO 63146 Phone (314) 214-7703 Cell (314) 496-6883 FAX (314) 983-3238 Bruce.Simms@Equifax.com IBM Champions -----Or…
onstat -g iof sanity check
onstat -g iof output ... The "avg. time" field (under each chunk) is in milliseconds, correct? So a value of 0.0860 = 86ms? I'm seeing some shocking numbers but want to confirm first. IO/s vs. service times are inverted, which would make sense. What are some baseline metrics fo…
Slow Bulk Loading problem
Hi this is the result of onstat -g glo MT global info: sessions threads vps lngspins time 3 34 9 0 93014 sched calls thread switches yield 0 yield n yield forever total: 448381298 447128835 2435982 2300468 228252272 per sec: 0 0 0 0 0 Virtual processor summary: class vps userc…
He's Back, Better and Bold
I wanted to take this opportunity to welcome back to the Informix team someone, who has helped many of us out through out the years. It is with great pleasure that I welcome back Jonathan Leffler to the IBM/Informix family! John F. Miller III STSM, Lead Architect miller3@us.ibm.…
Raw or cook devices?
When you say it doesn't support raw devices, do you actually mean it doesn't support raw devices in the form of /etc/raw/rawX ? I don't use SUSE but I am pretty sure that on all modern Linux distributions you can use udev to configure raw devices. An example on RHEL which might…
CDR question on big transaction
The blocked state is a signal for the source node not to send any other= transactions until the existing replicated transactions have been processed. It it triggered when 1/2 of the existing receive queue spac= e has been filled. The transfer of the transaction currently being t…
onstat -g iof: gfd and chunk number
Greetings. I am *SO* sure I have asked this question before but I can't locate it within the forum so here I go, perhaps again. When I enter the command: onstat -g iof, the first line of each chunk's I/O stats looks something like this: gfd pathname bytes read page reads bytes…
Cooked VS Raw
Am 14.10.2014 22:03, schrieb NATE HICKS: > Any bold opinions on cooked files vs raw space? I know previously I had been > told by many that the raw option was far faster because of HDD speeds. Since > most things aren't single drives anymore I assume that this has changed some? >…
Setup HDR
Informix = IBM Informix Dynamic Server Version 11.70.FC7GE Unix = HP-UX rafdr B.11.31 I am trying to set up HDR between two servers. After I successfully ran the command "onmode -d primary serverA" , I ran the command "onmode -d secondary serverB" I then get the following messag…
fast recovery
The only monitoring you can do is to run onstat -D, onstat -g iof, and onstat -u to see IO activity. In the future, besides remembering to alter the table to RAW and inceasing the number of recovery threads in your ONCONFIG file, try using my dbdelete utility for large deletes. …
Input/Output Operations
Anyone know a command that will give the Input/output operations/second(IOPs) that an Informix 11.5 instance is being asked to handle? Please understand that what I'm asking for is different than the read/write times returned per chunk from an onstat -g iof command. That command …
open curser wth problem
Hey all. I am using IBM Informix Dynamic Server Version 11.50.FC9W2X2 but we are in the process of migrating to IBM Informix Dynamic Server Version 12.10.FC3 so the solution must work for both. I have a spl routine that builds a dynamic sql to run a name search. It works unless …
database backup time versus workload
do you have sar running ? sar -d will quickly show you any q we use a product sarcheck that analyzes the sar files are reports bottle necks a very useful tool here is an extract below that hightlighs disk contention Average time spent waiting for I/O was 18.4 percent. I/O wait …
create_vp: cannot allocate semaphore
Hello, We are getting following error after restarting secondary instance . 01:50:44 IBM Informix Dynamic Server Started. 01:50:44 semget: errno = 28 01:50:44 create_vp: cannot allocate semaphore We are using IDS11.50FC8W3 with solaris spark. Can any one help us to resolve t…
Optimising index builds
> On 19 January 2014 at 11:10 NEIL TRUBY <neil.truby@ardenta.com> wrote: > > >> Is DS_TOTAL_MEMORY set high enough to permit significant in-memory sorting? > > I changed DS_TOTAL_MEMORY to 300GB and reduced BUFFERPOOL to 160GB. Now > nothing gets written out to the DBTEMP_SORT fi…
placing tables in db based on user login
IBM Informix Dynamic Server Version 11.50.FC9 Software Serial Number AAA#B000000 we are using dbmoto to transfer data to sequal server. Dbmoto creates tables in the dbspace where the db is created. We cant configure dbmoto to create tables in space of our choice Is there a way i…
is there sys table where index names kept
IBM Informix Dynamic Server Version 11.50.UC9 Software Serial Number AAA#B00000 is there are table where index names are kept. in the sysmaster db or anywjhere else…
when use IfxDataReader.GetIfxDateTime to NULL valu
Hello, The version of Informix products in my environment is: Database server: AIX IBM Informix Dynamic Server Version 10.00.FC5 IBM Informix CSDK Version 2.90 IBM-ESQL Version 2.90.FC4 Client: PC Windows IBM Informix-ESQL 3.70.TC5DE.…
Next Extent Size of an index
Hi all !!! Anyone have any idea how to find the next extent size of an index of a table? Informix Version : IBM Informix Dynamic Server Version 11.50.FC4 Operating System : AIX Version 6.1 (64 bits) Thank you very much to all!…
Error -556 on @ reference
In IDS_A have a stored procedure do_some that has a insert into a local table. In IDS_B have a stored procedure do_some that does: call base@IDS_A:do_some(); Calling this sp works ok. In IDS_C i try to run: call base@IDS_B:do_some(); Fails with error -556 Cannot create, drop,…
where get instance start time?
IBM Informix Dynamic Server Version 11.70.TC5IE -- On-Line -- Up 07:17:04 -- 775488 Kbytes How can one obtain the 07:17:04 from sysmaster ?…
Efficiency of the Informix Virtual Processors
Hi Jason, No Affinity. The configuration what we work the lasts months is 2 CPU VPs for each CORE (where have 4 smt), so... 50% of the virtual AIX CPUs. My change is exactly over this, I try work with 1 CPU VPs for 1 CORE CPU, but I not seen effect over the efficient (onstat -g …
sqlhosts setup enterprise replicatiion window - un
IBM Informix Dynamic Server Version 11.50.FC9DE Software Serial Number AAA#B000000 windows V 6.1 Build 7601 service pack1 IBM Informix Dynamic Server Version 11.50.FC6 HP-UX wuasp132 B.11.23 U 9000/800 sqlhosts setup enterprise replication window - UNIX Does anyone know if you…
enterpise replication between windows and unix
IBM Informix Dynamic Server Version 11.50.FC9DE Software Serial Number AAA#B000000 windows V 6.1 Build 7601 service pack1 IBM Informix Dynamic Server Version 11.50.FC6 HP-UX wuasp132 B.11.23 U 9000/800 Has anyone out there set up enterprise replication between windows and UNIX …
Monitoring IDS Load
For load/strees testing - versus normal performance monitoring - I would concentrate on the stats displayed by onstat -D, onstat -p (including calculating the basic metrics - BR, BTR, and RAU), onstat -g iov, onstat -g iof, onstat -g ppf, onstat -g seg as well as operating perfor…
dbaccess fails on windows Unknown error message 79
IBM Informix Dynamic Server Version 11.50.FC9DE Software Serial Number AAA#B000000 windows V 6.1 Build 7601 service pack1 dbaccess on windows fails to start with error message Unknown error message 79514. oninit oncheck and onstat work ok does anyone have ideas why it wont work…
cant start informix on windows
I get C:\\\\Users\\\\oliverk-admin>oninit -v Only members of IXDBSA group (Informix-Admin, by default) can start IBM Informix Dynamic Server. there is nothing in online log last entry from when I brought instance down 15:06:23 Maximum server connections 1 15:06:23 Checkpoint Sta…
Re: help with informix on windows oncheck -pr erro
more information Domain: st-network.maf.govt.nz from config file SERVERNUM 0 # Unique id corresponding to a server instance DBSERVERNAME apecert_ST # Name of default Dynamic Server DBSERVERALIASES apecert_ST_drda # List of alternate dbserver n the error C:\\\\Users\\\\oliverk-a…
help required dropping 200 gig db getting long tra
IBM Informix Dynamic Server Version 11.50.FC6 HP-UX wuasp132 B.11.23 U 9000/800 3 I have turned logging off yet still get long transaction dropping database. What do I do now ?…
question on a strange IDS issue for the group -- l
thank you all very much for the help. latest actions were to turn off KAIO. this only slightly improved the flush rates, but for all practicality removed the user waits on the checkpoint. my assumption is that since informix is now managing the i/o, it can be a little smarter a…
autoreg migrate
I am using IBM Informix Dynamic Server Version 11.70.TC4IE on Windows Server 2008. The ph_task table has âautoreg migrateâ running every day. I have not been able to find any information on what it does. Does it need to be running daily?…
How to find precision and scale for decimal
System: IBM Informix Dynamic Server Version 9.40.UC6W4 Hi guys, sorry for my bad language but i'll try to describe my problem. Where is the precision and scale for decimal located? I have a database an i'm looking for the precision and scale in the syscolumns table. Would you…
enterprise replication time to replicate data
IBM Informix Dynamic Server Version 11.50.FC6 Question for enterpise experts Does anyone know a command that will give me time that it takes to replicate data to a node? for example i update on server a and it replicates to server b . How long did it take? cdr view profile gives …
Informix doesn`t start
Hi, I`v got hudge problem, Hope fore someone of you it will be simple to find what happen. So, I try to resize my rootdbs, I wrote a few commands sth. like this: C:\\\\Program Files\\\\IBM\\\\IBM Informix Dynamic Server\\\\11.50>onspaces -a rootdbs -p C:\\\\IFMXDATA\\\\ol_ids_11…
onstat -g ath
if ! kaio && ! auto aiovp then check to see if you have enough aiovps configured. onstat -g iov , the last few should not be relatively busy (< 1.0 i/o per sec.) usual suspects : check for hot spots on disk (onstat -g iof; onstat -D). check for seq scans (onstat -g tpf | awk '…
koi -1 display from onstat -g iov (11.50.FC8)
Where is the -1 for the koi vpclass coming from in the output of the onstat -g iov command, ex: AIO I/O vps: class/vp/id s io/s totalops dskread dskwrite dskcopy wakeups io/wup errors tempops fifo 12 0 i 0.0 0 0 0 0 0 0.0 0 0 kio -1 0 i 3.8 209628 207709 1919 0 444439 0.5 0 0 An…
Mutex wait
40GB of buffers for 350 users? Are they all being used? In the onstat -P and onstat -g buf reports, are the lots of buffers in the 'other' column for partnum zero? Separate issue: I was suspecting LRU contention, but with 512 LRUs in each of three buffer pools, that's unlikely. …
onmode -l oddity
We have an informix server (IBM Informix Dynamic Server Version 11.50.FC8 ) that seems to behave strangely when you run onmode -l. Instead of moving to the next logical log, it appears to keep completing logs until you shut the server down. Any thoughts or suggestions on what to …
Over 1,000 days of 24x7 database uptime!
On 29.07.2011 20:38 Lester Knutsen wrote: > From one of our customers, their Informix server hit 1,000 days today > .... congratulations;) > > IBM Informix Dynamic Server Version 10.00.FC8 -- On-Line -- Up > 1000 days 00:31:45 -- They beat mine just bit ... IBM Informix D…
Informix is now on facebook
Dear Informix fans, Did you know that IBM Informix is now on facebook? Stay on top of all the latest News related to IBM Informix. Hear about the latest announcements from IBM and IIUG, contests, interesting blogs, best practices, resources, as well as engage with us on top…
onstat -g glo: cpu efficiency
I am a bit concerned over what onstat -g glo is reporting regarding eff for the three cpuvp's , they are avg in the mid 60's. Other instances in our client's landscape have all three much closer to 100% (however those instances are no where near as heavily loaded as this one). C…
Question about onstat -g ioq?
Hello , I have some problem about IDS9.40FC7 on solaris9 and solaris10. We have just migrate all database from IDS9.40Fc7 on solaris9 to solaris10. It work OK. All DB is RAW-DEVICE. I have also tuned some parameter as follow NUMCPUVP from 16 to 25 NETTYPE TCPIP from 16*300 to 2…
Re: AIO and Buffer Waits
Most bufwaits are caused by contention for the LRU queues, so increase the LRU queues for your buffer caches to maximum first. Use the BTR calculation and observing activity in onstat -P over time to determine if you may also need more buffers. Art Art S. Kagel Advanced DataTo…
Transaction mode on ids 11.50
Thanks for fast respone. Database is on windows machine. I try to run that comand and im getting nothing, no error, no nothing... C:\\\\Program Files\\\\IBM\\\\IBM Informix Dynamic Server\\\\11.50\\\\bin>ontape -s -B C:\\\\Program Files\\\\IBM\\\\IBM Informix Dynamic Server\\\…
clob length function
I'm using IBM Informix Dynamic Server Version 11.50.FC8X4. Does anyone know of a way to find the length of a clob column? Like the length() function works for varchar & lvarchar. Thanks…
IDS 11.50/AIX 5.3 Slowness Issue?
It appears the onstat -g ioa is cut off. My favorite and I feel the most useful part of the onstat -g ioa (is the sub option onstat -g iof). It will tell you the average service time of the device. It does not matter how the device is broken up under the covers, if your average s…
Re: Onload, the "fast" alternative
Hello Neil, Did you check if stuff is physical logged ??? onstat -l during the load and maybe onstat -g iof etc. Superboer. On 17 mrt, 21:23, "Neil Truby" <neil.tr...@ardenta.com> wrote: > "Art Kagel" <art.ka...@gmail.com> wrote in message > > news:mailman.838.1300203605.1071…
Is KAIO in use
KAIO is not a VP but a thread running on the CPU VP. You can see the KAIO threads using onstat -g ath onstat -g glo shows the list of all of the VPs running in your instance. onstat -g iov does not show the actual VPs; only the thread names running on VPs performing IO (kio, a…
Problems with demo database
I have a problem with creating demo database on Windows 7. I have installed informix client in c:\\\\program Files\\\\Ibm\\\\Informx\\\\client-SDK directory and Ibm Informix Dynamic Server in c:\\\\program Files\\\\Ibm directory. I set the INFORMIXDIR to c:\\\\Program Files\\\\I…
Informix Products Installation
I have always installed the oldest to the new product. I also never install the engine in the same directory as the 4gl and ISQL, but that is a matter of preference. When you install them all together it is messy to upgrade only one part. So if everything is 11.5 FC4 the order i…
ontape backup failed
IDS Version: IBM Informix Dynamic Server Version 9.40.FC2 UNIX OS Version: Tru64 UNIX Ver 5.1a Finally it worked after setting the TAPESIZE to 140000000. It took two tapes but it worked. Thanks a lot. Kanti…
Physical Log Size
Metrics look good. More buffers will probably help a bot more as s BTR over 6 is ok but bit high, so try increasing buffers again. The RAU is over 100 because you got the formula from an old post where I did it backwards. Divide the used by the sum of the other RA values. Art O…
onstat -l
Thanks Art. The service times in iostat -g iof are low, 0.0059, or 0.0060 for the logical log chunks. However we do rotate through the log buffers very quickly, although I never see the bufused for the logical log buffers go higher than 2, however given the statement/transactio…
Fast Recovery
Call IBM support and take tghe down systems queue. They can terminate the transaction for you. W/o a good backup, I know of no other way.…
Re: KEY PERFORMANCE METRICS
onstat -g iof will give you IO/sec average per chunk file. The total IO/sec for all chunks is more difficult. It will be somewhere between the average of those averages and the total of all of them. Transactions per second you will be better off getting from your applications.…
What sysmaster table?
Art Kagel Wrote: ============================================================================== Folk: Does anyone know if the information on the onstat -g iof report for the IO service times for each device/chunk/file are available in sysmaster at all? I can't find that informat…
ER sync bottleneck ?
Hi , 11.50 FC7W1GE Somebody have any tip, about how improve the speed or identify some bottleneck in synchronization of replicates? I'm testing the synchronization where the destination table is empty. The source have 260mi records. (30 bytes rowsize) Monitoring the synchron…
ifx_replcheck question - table level restore is no
I ran across this in one of the manuals, does anybody know if this (You cannot perform a table-level restore on a table that contains the ifx_replcheck column.) is still a limitation in IDS 11.50.XC6 and beyond? Improving the Performance of Consistency Checking with an Index Yo…
SQL running too slow in IDS 9.4
Hi All, This has been asked again and again.. I'm curious how can i tell that i need to do the ff: 1. Update statistics -- this just been executed during the weekend, 5 days now. 2. How can i identify what causes excessive memory use? i did onstat -g mem, onstat -g iov for virt…
Upper/Lower Characters
Hi, We are using IBM Informix Dynamic Server Version 11.50.FC6 on SunOS 5.10 Generic_138888-08 sun4v sparc SUNW I want to know how can i get the information that do i have any upper or lower case character present in any particular column. Thanks. Shahzad Salam Kasi…
optimum usage of resources
> sorry actually I wanted to ask "How do i make use of more Processor > Resources" Increase the workload? Informix will use your CPU resources if it needs to. You could add a million CPUVPs and get CPU utilization up to 100% because more work is being done to coordinate these m…
problem with onshowaudit
$onaudit -c Onaudit -- Audit Subsystem Configuration Utility Current audit system configuration: ADTMODE = 1 ADTERR = 0 ADTPATH = /export/home/informix/aud ADTSIZE = 50000 Audit file = 5 $vi adtcfg.2 #***********************************************************************…
Re: onstat -g iof
Please check because I'm talking without looking at any documentation: kaio_reads/writes are I/O operations. Each operation can read/write more than one page. I/Os per second is a nasty number... Why? As far as I remember it's the number of I/Os done divided by the time the inst…
tempdbs in raw or in filesystem
I have two temp dbspaces on same disk. One is using like raw devices with direct I/O and another like file in Linux file system. Both of them have almost same number of read/write but, using onstat -g iof command for monitoring system, looks like temp dbspace in file system is 10…
11.10 FC2
Hi, I'm running IBM Informix Dynamic Server Version 11.10.FC2, as stated by onstat, but after surfing for a while, it seems to me it's very difficult to find out whether this is an Enterprise or Workgroup license. Could anyone help? Thanks, Gabriel…
onbar restore hanging
Hi, Do onstat -g iof moving or not on individual chunks? rgds schillache…
Replication queue filling up
If it is taking 15+ minutes to complete a cdr list serv, then I would c= heck to make sure that there is not a 'runaway' process that is affecting performance on the machine. You might want to run 'top' or some other = tool which would show the highest cpu users in the system. =…
RSS Appears to stall ?
"Lello, Nick" <Nick.Lello@nielsen.com> wrote in message news:mailman.325.1259273205.6236.informix-list@iiug.org... >From s3:- > IBM Informix Dynamic Server Version 11.50.FC5 -- Updatable (RSS) -- Up > 2 days 17:52:35 -- 18714624 Kbytes Do you think it might be because they h…
Seeing one oninit working hard while others are no
Database server: Database:/home/informix>onstat -g glo IBM Informix Dynamic Server Version 11.50.FC3 -- On-Line -- Up 4 days 09:51:55 -- 6104464 Kbytes MT global info: sessions threads vps lngspins 692 850 22 117863 sched calls thread switches yield 0 yield n yield forever to…
NAS I/O requirements
Has anyone had any experience with IDS and dbspaces on network attached storage? We have filled up our internal disk storage and are now looking into adding more storage using NAS. Is there any documentation on specific requirements for I/O speeds on using NAS (switcher and disks…
RE: NAS I/O requirements
Has anyone had any experience with IDS and dbspaces on network attached storage? We have filled up our internal disk storage and are now looking into adding more storage using NAS. Is there any documentation on specific requirements for I/O speeds on using NAS (switcher and disks…
External backup
IDS 10.0 for example, any O/S. I've never understood why we have to an onmode -c block/onmode -c unblock when taking a clone of Informix's data disks for back-up purposes. To my simple mind if Informix can fast recover from the original disks it should by definition be able to …
Simple trigger question
IBM Informix Dynamic Server Version 11.50.UC1E > > You don't specify which version of IDS, however, certainly at older > versions, it is only possible to specify a single trigger for each of > the INSERT, UPDATE or DELETE actions, therefore one trigger with 2 > WHEN statements. …
Re: a little help with query.
No it's not, it's in it's own dbspace. I tried however ( on a test server ), to drop the index and create it without any "in" clause, so that it would follow the fragmentation of the table. That didn't buy me any performance gains. ----- Original Message ----- From: "david@smoo…
RE: a little help with query.
So about 84k records in the table match that profile_token. Not very unique. The query didn't run any faster when I removed the not null clause. So I guess this is a disk type performance issue. My onstat -g iov has the inverted pyramid. Don't know why else it would take so long…
Question about the status of the thread
On Jun 30, 2:58 pm, Peternt <roger_vi...@yahoo.es> wrote: > Environment: > > Informix 7.31 64 bits > HP-UX 11i > > Hi, > I see the output of onstat -g ses and I have one question. > Please, anybody knows which is the diference between the status > "sleeping(Forever)" and "sleepin…
IBM Announces Socket Based Licensing for Informix Dynamic Server, Workgroup Edition
When I was at the IIUG conference last month, more than one person I talked to was unaware of the some recent changes IBM had made to the way you could license Informix Dynamic Server, Workgroup Edition. The change in February (http://www-01.ibm.com/common/ssi/rep_ca/3/897/ ENUS…
onbar -r -n hangs in cold restore of rootdbs
Paul: Just an idea, but informix SAP systems generally have a large amount of space dedicated to physical and logical logs. During the restore process informix must fill the log file with zeros (this is so it does not see old ghost recovery data as valid data). I would check an …
Buffer Turnover Ratio (BTR)
The Remaining outputs are as follows onstat d IBM Informix Dynamic Server Version 11.50.FC3W1 -- On-Line (Prim) -- Up 20 days 02:38:41 -- 1548288 Kbytes Dbspaces address number flags fchunk nchunks pgsize flags owner name 11c65c028 1 0x40001 1 2 2048 N B informix rootdbs_05 1…
Esoteric Disk Issues
Can you elaborate on this NJ? From what I understood if we had a UFS mounted file system for example, and when the file system was mounted we used the "forcedirectio" option, we would bypass the file system's buffer cache, closer mimicking raw disk i/o behavior. MM…
IDS Bootcamps for Business Partners in NE IOT
IBM is pleased to offer a number of technical sessions in Q2 for the business partners and ISVs in Northeast IOT with the help of the IBM local team. The objective of these bootcamps are to enable business partners and ISVs on Informix software. These bootcamps will include deta…
IDS 9.40 End of Support Imminent
I have seen a number of posts on CDI recently related to IDS 9.40 As per the announcement on September 7th 2007, effective on the dates listed below, IBM will withdraw support from the following product releases licensed under the IBM International Program License Agreement: 9…
onstat -g iov
No doubt the real answer is RTFM. But, can anyone give me or point me to a good description of the i/o -wakeup ratio, and why 0.5 is "good"?: onstat -g iov -r 5 IBM Informix Dynamic Server Version 10.00.FC8W2 -- On-Line (Prim) -- Up 81 days 06:27:37 -- 46892464 Kbytes AIO I/…
Re: MSC virtual-processor class too loaded aft....
Do you have clients connect to the engine and not do any work, or just disconnect? It just strikes me as very odd that the server has only been up 54 minutes, but 1 of the msc vp has consumed ~2200 seconds of user cpu time, while your cpu vps have done practialy nothing. For that…
MSC virtual-processor class too loaded after migra
If you run onstat -g ioq msc does it return anything? If there are currently operations queued up for the msc vp to do they should be listed with that command, but if they are getting serviced too quickly if might be difficult to catch any output with that command. Check onstat -…
DBspace temp1 down after restore
Hi Guys, had some troubles with power and lost some disks last night. Running 9.40 FC7 on Solaris. There were some I/O errors and 3 chunks were down. For the moment a restore (onbar -r) is still running (could salvage the current logical log), but I wonder what will happen when…
AIO VP has more load then KAIO
Hmm, it could be you have set explain turned on, or tracing enabled in a SPL? You could try looking at onstat -g ioq aio in conjunction with onstat -g iof to see what files the aio vps are writing too. Jacques…
IDS FC3 on Windows Vista Business x64...
Hi Jean Georges, If you type "whoami /all" from that prompt, does it say you are a member of the Informix-Admin group? If the answer is no, logoff and log back in again to refresh your token information. If the answer is yes, can you paste the "PRIVILEGES INFORMATION" here. G…
slow connections
> My idea : > > - OS level such as kernel parameter, error log from system > , i/o busy > - Network level such as network card errors , network log > > For IDS : > - Check point duration and check point interval (system will be blocked while doing checkpoint) > - try to change > …
Dbspace creation
Hi, I have 3 hard disk partitions hda5, hda6, hda7. I would like to create dbspace in each of this file system partitions. hda5 - dbspace1 hda6 - dbspace2 hda7 - dbspace3 We wish the dbspaces to have the size equivalent to the partition size. I have created the dbspace1 usin…
Question about sysindexes.clust
Just out of idle curiosity, do you have stats at the disk level for the number of I/O's taking place during each iteration of these tests? -- Cheers, Obnoxio The Clown http://obotheclown.blogspot.com…
Fwd: IDS i/o and Solaris
"LIGHT SCANS" <light_scans@yahoo.com> wrote in message news:858b0793-7a03-4404-a82b-8bbc03e8c604@n33g2000pri.googlegroups.com... > Hello Neil, > > Frank and Art have their valid points and I am always greatful for > their help. So I hope that I don't offend when I say that I thi…
Informix Virtual Appliance
Fernando Nunes wrote: > IBM has made available a virtual appliance with SLES 10 SP2 and the > following IBM products installed and configured: > > IBM Informix Dynamic Server 11.50.UC2DE > IBM Informix Client SDK 3.50.UC2 > IBM Informix JDBC Driver 3.50.UC2 > IBM Informix Spatial…
How to report on all on line Informix instances
Hi, we started with 11.10.FC2W1 and with in few months W3 and now on 11.10.FC2W4 and .... proddb:/export/home/informix> onstat - IBM Informix Dynamic Server Version 11.10.FC2W4 -- On-Line -- Up 22:15:04 -- 10683392 Kbytes But proddb:/export/home/informix> onstat -g dis Server…
Re: Long checkpoints
askel wrote: > Obnoxio, > > Thank you for the advice. It doesn't seem to be dangerous but could > you tell me how do I reverse the effect of executing that command or > how do I check what is the currently used value? We do have backups > but restoring the database is last thing …
Regarding database hanging problem - Please Help
Hi, I am facing a database hanging problem. The details are as follows : Database Version : IBM Informix Dynamic Server Version 10.00 OS : HP-UX There are 2 db servers, one for test environment and one for development environment. The problem is with the development environmen…
Re: Tech Tip du Jour: Over the threshold
Neil Truby said: > "Obnoxio The Clown" <obnoxio@serendipita.com> wrote in message > news:mailman.1454.1217725051.20610.informix-list@iiug.org... > >>> I suspect I'm setting myself up for a huge caning from John Miller III >>> here, but what the hell: > http://obotheclown.blogspot…
load distribution to kio vps
IDS: 11.10.FC2 I am seeing slow performance and when I look at onstat -g iov I see that out of 28 kio vp only 2 are super busy. Below is the snapshot (first 2 have 107 and 136 io/s): kio 0 i 107.7 27388858 15142656 12246202 0 45203359 0.6 0 0 kio 1 s 13…
CONFIGURATION ONAUDIT-IBM Informix Dynamic Server
Hello, I need to configure onaudit and onshowaudit able to register for each of the consultations that are made to the database, either through dbaccess, ODBC or another application. I've been reviewing the IBM Informix Trusted Facility Guide, but I was not working. What param…
How to Store Table in RAM in Informix
Hi ... I think you can use RAM disk as the chunk , IDS access shared memory to satisfy your read/write requests , and those data in shared memory will [read from/flush to] chunk , so if your chunk is a RAM disk , then you don't have a Hard Disk I/O and you get the performance ~~…
Upgrade question
Hi Sebastian, I am leaving Sun Enterprise 250 (32 bit Sparc) Solaris 8 informix 9.30, going to Sun T5120 (64 bit Sparc) Solaris 10 Informix 11.10 and more disk drives to spread out the I/O!. The migration guide suggest dbexport/dbimport but I wonder if there is a better way. Th…
Urgent help requested
If multiple instances try and kill -9 on pid for cpu: $onstat -g glo IBM Informix Dynamic Server Version 10.00.UC5 -- On-Line -- Up 08:22:30 -- 165984 Kbytes MT global info: sessions threads vps lngspins 0 24 12 5 sched calls thread switches yield 0 yield n yield forever tota…
onstat -g rea almot 100 queue there !!!
>Yes, you've got it. You are correct, your chunks certainly do look like >they are RAW and so KAIO should be working for you, but, as I said, it's >not. Your onstat -g iov output does not show any kio threads running. KAIO >is on by default on all platforms except HPUX (because H…
Analysis of activities during checkpoint.
Hi Vartika, Please check this link. You can add but not drop virtual processors of the AIO, PIO, LIO, TLI, SHM, SOC, and STR classes. http://publib.boulder.ibm.com/infocenter/idshelp/v10/index.jsp?topic=/com.ibm.ad ref.doc/adref308.htm Thanks.. Amitava E - id : amitacha@in.ibm…
Re: help with slow archive please
we have had some network issues. The sars don't look different or excessive. We are doing a full archive every night, and the database hasn't grown much since last week, so that's not it. I am trying to be able to intrpret the onstat -g stq so that I can hopefully see if the tap…
Re: help with slow archive please
On 21/05/2008, Floyd Wellershaus <floyd@fwellers.com> wrote: > Hi, > Doing onbar archive to Tivoli 5.3 with IDS 10.0.UC5 on aix5.3, to a 3490 > tape library. > > All of the sudden our archives are taking much longer. Don't see why, and > am trying to Troubleshoot. Our onstat -g …
help with slow archive please
Hi, Doing onbar archive to Tivoli 5.3 with IDS 10.0.UC5 on aix5.3, to a 3490 tape library. All of the sudden our archives are taking much longer. Don't see why, and am trying to Troubleshoot. Our onstat -g iov is looking good. I remember that there is an onstat -g stq, that wil…
Create Index Mysteriously Slow at the End - IDS 11.10.UC2W2 - Red Hat EL5
Andrew Ford wrote: > From: <jprenaut@yahoo.com> > >>If you are always catching the flush_sub threads with this stack, then >>they have submitted an I/O request to the KAIO threads > > > I thought it would be interesting if I disabled KAIO and went with AIOVPs. > > Totally differe…
Full Proof way to determine if ontape is restoring
Onstat -D or onstat -g iof are the only ways to monitor the progress of a restore, unfortunately. Art S. Kagel Oninit On Mon, May 12, 2008 at 3:47 PM, WILL LANDSTROM <willlandstrom@yahoo.com> wrote: > Hey sorry for this basic question. IDS 9.4 databases. When I run ontape -r >…
reliability?
IBM Informix Dynamic Server Version 10.00.UC5 on redhat Try this: SELECT MIN(colno) FROM syscolumns WHERE colno>=1 AND colno>1 An the answer is ..... 1 A know that stupid questions generates stupid answers but still.... Anyone has come to that?…
IDS11 startup problems
I have had family matters that prevented me from providing clarifications right away. But here we go: Where are your chunks located (onstat -d)? Where is $INFORMIXDIR point= ing to? Response: [root@gage ~]# onstat -d Your evaluation license will expire on 2008-08-11 00:00:00 **…
RE: IIUG Board election results
> When did 'embedded' mean something like Informix? I agree with you and I think IBM does too. IBM has been using integrated where they had been using embedded before and I think this is a good fit. >From the IDS 11 page at http://www.ibm.com/software/info/ids/index.jsp IDS 1…
Re: long checkpoint duration
Hi Floyd, tell me what onstat -C shows you? Also onstat -C hot |wc -l would be nice as well. One of the bigger culprits in the old days was the btcleaner thread since it has to clean indices for the who instance, and the current defaults help make the btscanner thread just as b…
Re: long checkpoint duration
Floyd Wellershaus wrote: > Hi, > The age old question I guess. But our checkpoint durations are > consistently near 20seconds. > > ids10.0 fc5 on ibm p570 running aix 5.3 7 cpus 41g ram. > ckptintvl is 300, I am considering halving that. > We have 128 lru's and 128 cleaners > A…
long checkpoint duration
How many partitions are being accessed? Lots of partitions will cause the checkpoint to slow because they have to be flushed out. Have you thought about moving to Cheetah? The non-blocking checkpoint for heavy oltp systems will remove this problem. Customers moving to Cheetah ha…
CPU Help
First, thanks for your time here. You're right it is confusing. I ran topas and noticed (Online Virtual CPUs: 8, Online Logical CPUs: 16) Does that mean 16 physical cpus? I have 167x4gb dbspaces. Your suggestion then would be: VPCLASS cpu,num=15,aff=1-15,noage VPCLASS aio,num=16…
Update from Digital 7.31.FD1to ....
It seems to me that it is turned on: onstat -g ioq | more Informix Dynamic Server Version 7.31.FD7 -- On-Line -- Up 1 days 23:05:38 -- 2039808 Kbytes AIO I/O queues: q name/id len maxlen totalops dskread dskwrite dskcopy kio 0 0 32 14645648 13622478 1023170 0 kio 1 0 32 145718…
Activate dynamic explain
Hi all, To analyse a user query I tried to activate dynamic explain using onmode -Y <ses> 1. Using onstat -g ses I found that dynamic explain had been activated (on), however I did not find any sqexplain.ses.out file created. When I issue onstat -g iof I see the particular file …
Re: long checkpoints
On 22 Nov, 20:49, "TBP (The Big Potato)" <T...@NotHere.Co.Uk> wrote: > <SNIP > > > > > > > > > Hi Abdullah, > > > have you ever tried to find out your I/O speed? You might compile the > > following c-code and start the test-program. > > > cat <<eof > prog.c > > /*******save to pr…
Request for input on IDS V10 Checkpoint Blocking
Has anyone seen a problem with IDS V10 going into checkpoint and not coming out? AIX 5.3 > oslevel -s 5300-06-03-0732 IDS 10.00.FC5 I currently have a case open with support and it has been sent off to development but what I am hearing makes me want to rollback until FC8 is av…
Re: long checkpoints
Art S. Kagel wrote: > On Nov 21, 8:46 am, Apostrof <abdullah.ako...@gmail.com> wrote: > <Previous post SNIPPED> >> Hi Art, > > Hi, > > Your server's healthy overall. Metrics look good: > > BR = 3.68 > BTR = 1.73/hour > RAU = 99.69% - not perfect but acceptable It probably could…
IBM Informix Dynamic Server Express Edition 11.10.xC1E
InDeep wrote: > Hi, > > I've downloaded Informix 11 but have not found what the limitations are > for this release. > > IBM Informix Dynamic Server Express Edition 11.10.xC1E ( Linux ) > > Can someone point me to the docs explaining what this release lacks or > what has been crip…
Re: IDS 11 Developer Edition: Available
On Nov 7, 6:43 am, "Obnoxio The Clown" <obno...@serendipita.com> wrote: > Fernando Nunes said: > > > > > John Carlson wrote: > >> Fernando Nunes wrote: > >>> IDS 11 Developer Edition is now available in the "Trials and demos" > >>> section of IBM Informix site: > > >>>http://www-…
raw and cooked partitions on the same disk?
Hi, I have always managed raw devices so that they have had exclusive use of the physical drive(s). This has allowed me to monitor I/O performance of the db without interference from other processes on the storage device. I have been asked to create an application instance on a…
Moving IDS server to Berbee hosted VM server
I am currently managing an IDS 10.00.UC6 (100 GB) instance running in a VM on RH Linux 4.0. There server is going to be moved to Berbee (Madison, WI) using their Hosted Enterprise Infrastructure Services. In other words they will manage the VM on their own boxes. The question I h…
IBM and AGS Announce Availability of New Solutions for Informix Dynamic Server
'IBM and AGS Ltd., a privately held purveyor of management solutions for data servers, announced that the new Server Studio and Sentinel R. 6.1 -- the principal suite of integrated system management tools for IBM Informix Dynamic Server (IDS) -- is now available, with editions of…
Re: Slow database creation and loading
Hello John, if you set lrumax and mindirty to 99 you have to generate your own checkpoints!!!! if you do not want to generate checkpoints you may want to set lrumaxdirty to 10 and set mindirty to say 5 or smaller. 400000 for BUFFERS means 4 * 400000 = 1.6 GB of buffer cache...…
Re: Slow database creation and loading
On Jun 19, 3:05 am, Superboer <superbo...@t-online.de> wrote: Hi Superboer, Thanks for helping me with this. Last night I changed the BUFFERS to 400000 and increased LRUS and CLEANERS to 99 for each and this did not speed things up. So tonight I am going to try also make some…
Re: Slow database creation and loading
On Jun 11, 3:07 am, Superboer <superbo...@t-online.de> wrote: Hi Superboer, Thanks for the reply. > You should be able to speed this up. > > > I have been told that we have 4 GB of memory on this box. > > BUFFERS 75000 # Maximum number of shared buffers > > 4 …
Re: IBM, AMD and Novell Team on Linux Offering for Informix Dynamic Server
Dirk Moolman wrote: > A little old (Feb, 2007), but interesting > > http://new.marketwire.com/2.0/rel.jsp?id=723679&sourceType=1 > > IBM, AMD and Novell Team on Linux Offering for Informix Dynamic Server Yes, I read this one back then. Been thinking of asking about it on the lis…
IBM, AMD and Novell Team on Linux Offering for Informix Dynamic Server
A little old (Feb, 2007), but interesting http://new.marketwire.com/2.0/rel.jsp?id=723679&sourceType=1 IBM, AMD and Novell Team on Linux Offering for Informix Dynamic Server ARMONK, NY -- (MARKET WIRE) -- February 14, 2007 -- IBM (NYSE: IBM) today announced that it is teaming …
Re: Slow database creation and loading
> Free=13177086K Used=10205524K Full=43.65% > > Is this 10 plus hour time the best we can do or can we speed this up > somehow? If we can speed this up please guide me as I am not a DBA > and we do not have a DBA on staff. You should be able to speed this up. > I have been …
Error when initializing
06:36:20 IBM Informix Dynamic Server Version [b]10.00.UC6TL[\\b] I believe this is likelt ot be a new ish instance to a newish user of the software…
RE: - RE: Informix Java problems [8755] - Bayesian
I am just executing the jvpcontrol function, to monitor my Java stored procedure. Regards, Kenneth Penza Systems Engineer Systems and Database Services Service Management Department Malta Information Technology & Training Services Ltd Please read our Legal Notice: http://emailp…
Re: KAIO Question [8766]
Art, I did have our Techs configure one raw dbspace/chunk that I added within the instance to see if that made a difference, but it did not. -John -----Original Message----- >From: "ART KAGEL, BLOOMBERG/ 731 LEXIN" <kagel@bloomberg.net> >Sent: Mar 30, 2007 7:56 AM >To: ids@iiu…
Re: KAIO Question [8763]
Art, I agree, and having checked for the env variable "KAIO_OFF=1", made sure it was removed from the .profile, and confirmed I do not see it set anywhere else. I have bounced the engine, and confirmed it does not exist, but still do not see the KIO thread. Do I need to do som…
KAIO Question
IDS AIO VPs do NOT use OS Asynch IO facilities, they simulate asynch IO for cooked chunks. If you use RAW chunks there should be only a few aio vps configures and onstat -g iov will show one kio thread for each CPU VP. The only way you would not see KIO threads if all of your chu…
KAIO Question
To any AIX / IDS gurus out there, Background: We are running IDS 10.00 FC4 on AIX 5.2 TL8. We have been having some AIO issues with two boxes (each is a 390 with 8 cpu's), one dev and one prod. We tuned the DEV box with min and max AIX AIO 5, and 180 respectively, and it is…
Informix Java problems
People, I am running Informix 10.00.UC3W2 with Java on RHEL3. We are experiencing a problem that a Java UDR starts working and randomly it stops executing and the only way to get it working again is to restart the database server. Further to this I have executed onstat -g glo t…
RE: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
>From: "Jack Parker" <jack.parker4@verizon.net> > >Can I sell you a nice consultant on a bridge in Brooklyn? > >Come to think of it, I was barking up the wrong tree. It would be tough to >improve on Server Studio from a community effort standpoint. > >I had been working on a hea…
RE: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Can I sell you a nice consultant on a bridge in Brooklyn? Come to think of it, I was barking up the wrong tree. It would be tough to improve on Server Studio from a community effort standpoint. I had been working on a health-check script, but the amount of work involved is dau…
Re: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Paul Watson wrote: > The invitation or controlled Beta started back in Decemeber, which is > why some of us have an idea what the initial problems were > > Paul Watson > Tel: +44 1414161772 > Mob: +44 7818003457 > Web: www.oninit.com > > Failure is not as frightening as regret. >…
Re: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Ian Michael Gumby wrote: > Its one thing for Timmy to post here and vent. > Or to ask questions here. > > I doubt that they are going to be "support" related. > Excuse me I do post support here, and have over the years posted tools and other tips, etc. I _am_ eager to see Inform…
RE: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Jack, So you're the guy behind all those "consultant spams"? :-) JUST KIDDING! If you are interested in a community effort, pls lets take this offline. Also anyone else interested let me know. There is some merit to this... -G >From: "Jack Parker" <jack.parker4@verizon.net> …
Re: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
>From: Mark Jamison <majp51@yahoo.com> >Define control. > First, When the comment was made that IBM monitors the iiug discussions along with comp.databases.informix, this means that they read and sometimes respond to posters and get engaged with discussions, usually from their ow…
RE: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Wed last my posts via iiug were being shot down by the spam filter, as were my love notes to webmaster or anyone in the iiug domain. Thanks Stuart for getting it resolved. j. -----Original Message----- From: Ian Michael Gumby [mailto:im_gumby@hotmail.com] Sent: Monday, Februar…
RE: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
This forum (informix-list or cdi) is not really an IIUG service (well, the archive + the gateway is, but...). And yes, people from IBM look and participate in this forum, often using personal e-mails for legal reasons. And we thank them for doing so, it makes this community mor…
Re: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Define control. There are a few IBM people who monitor the iiug, and yes, some of them are involved in the Cheetah release. However from a support standpoint there needs to be a centralized location for receiving issues. Is that some attempt at control. Sure, but that is the s…
Re: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Really? IBM monitors the iiug? ----- Original Message ---- From: Jean Georges Perrin <jgp@jgp.net> To: Mark Jamison <majp51@yahoo.com>; informix-list@iiug.org Sent: Monday, February 19, 2007 4:16:00 PM Subject: RE: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE IBM ca…
RE: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Well, I don't know why the IIUG wouldn't let you post, but it sounds like a personal problem to me. ;-) Seriously, I think that if we pooled some resources we could do something ... >From: "Jack Parker" <jack.parker4@verizon.net> > >I might be interested as well... > >Provide…
RE: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
>From: "Jean Georges Perrin" <jgp@jgp.net> >To: "'Mark Jamison'" <majp51@yahoo.com>,<informix-list@iiug.org> > >IBM can (and does) monitor CDI too. ;-) > > Right. But I think the idea is to steer all beta talk over to IBM so that they can control the conversation(s). _________…
RE: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
IBM can (and does) monitor CDI too. ;-) _____ From: informix-list-bounces@iiug.org [mailto:informix-list-bounces@iiug.org] On Behalf Of Mark Jamison Sent: Monday, February 19, 2007 23:00 To: informix-list@iiug.org Subject: Re: IBM Informix Dynamic Server Version 11.10.UB4TL…
Re: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Well, actually there is a new tool soon to be released with the beta It's a rather nice Admin tool written in PHP. Much better than ISA, IMHO. BTW if you are talking about cheetah, please move the discussion to http://www-128.ibm.com/developerworks/forums/dw_forum.jsp?forum=10…
Re: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Tar is no problem. The _ONLY_ time I've ever used cpio was for Informix! Never for anything else in 20 years of using UNIX and now the past 10 years of Linux, I've never had to use cpio for anything. There's some moron at IBM that must have come from Informix and perpetuated …
Re: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Obnoxio The Clown wrote: > Tool said: >> Looks like I'll be staying with the command line for a while. > > Not the sharpest tool in the shed, then? :o) > Ya got me. :o)…
Re: Anybody seen a very fast wild cat out there?
david@smooth1.co.uk wrote: > > Yes, can we get these in the documentation? And a way to view all > this information via onstat/SMI? Check onstat -g iof and onstat -g ckp (new option). I believe (may be wrong), that they contain much of this information. Not sure if it's in …
Re: IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
>From: "Obnoxio The Clown" <obnoxio@serendipita.com> >Tool said: > > Looks like I'll be staying with the command line for a while. > >Not the sharpest tool in the shed, then? :o) > >-- What do you expect when he can't grok cpio? Sorry but cpio and tar should be second nature to…
IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE
Hi all, I've successfully installed IBM Informix Dynamic Server Version 11.10.UB4TL on SuSE 10.1. I found an old SuSE machine I'd recently installed SuSE 10.1 on, ( Pentium III 750 Mhz, 500MB RAM ) and it is a great candidate for this beta. So far the installation went very s…
sysmaster question
poking about. I have a table, in a single dbspace, in a single chunk. (Cooked). According to sysptprof, there have been 4.2 million page reads against the table. According to syschkio, there have been 3.6 million pages read from the chunk. Obviously this is a discrepancy, ho…
Re: Pls help to tune my informix engine .. thanks
Henry wrote: > Hi gurus: > > I am using IBM Informix Dynamic Server Version 9.40.FC7 under a 6 CPUs > HP-UX server. > There are 57 dbspaces with a total of 85 chunks. > The informix engine is running very slow recently. > I was not sure whether it is the result of poor tuning or …
Block device to character device
Hi ART KAGEL, The version of informix is : IBM Informix Dynamic Server Version 9.30.FC6 and the OS is HP-UX metricap B.11.11 U 9000/800 3729261492 unlimited-user license Is there any convertion needed? Or as stated by Marcus Haarmann just broke the symbolic link and point it to…
How to Handle BLOBs via ODBC ?
Hi, i need to store "files" (.doc, .pdf, etc.) in an informix database, the scenario is: production enviroment: IBM Informix Dynamic Server Version 7.31.FD8 on SunOS 5.9 development enviroment: IBM Informix Dynamic Server Version 9.40.UC7 on Red Hat Enterprise Linux 2.6.9-5.ELsm…
Client SDK license
DBA's, I have 180 user licenses for IBM Informix Dynamic Server Version 10.00.FC3R1 for a HP 9000/800/N4000-65. The application accesses the instance by RFID devices though tcp/ip connections. My client wants to be able to access the application from several PC's as well. My qu…
License Extension
Help.. I need a license extension for the IBM Informix Dynamic Server Version 10.00.FC3R1TL which I downloaded to do a evaluation. How can I get the license extened..my project is in the final stages .. Dhaya Commercial bank…
Re: speed up onspaces utility
"Yunyao (Frank) Qu" <Yunyao.Qu@noaa.gov> wrote in message news:mailman.544.1158950128.20706.informix-list@iiug.org... > Art and Neil, > > It took about 20 minutes to initialize a 10 Gig dbspace. > > I just talked to SysAdmin. He thinks that the stripped raw disks may > be th…
Re: CKPT REQ stops ontape -r recovery
Thanks to Norma and Martin for their efforts here. But it turns out the problem was not as I perceived and presented it. The state of CKPT REQ is apparently a common phenomenon during recovery. When I later reran the recovery (after some fixups) it got into that state a while …
Re: Need your help on this strange loading problem ... Thanks
Hi Jonathan, Yes, environment is the same. I have hard-coded delimiter type in my loading script. So, I believe this is not the problem. IDS version: IBM Informix Dynamic Server Version 9.40.FC7 Platform: HP-UX B.11.23 U ia64 (tc) Thanks for your help.…
CKPT REQ stops ontape -r recovery
Greetings, Family. I am trying to "clone" a server from the ontape backup set of another. It was going great for about 11 hours and then seems to have stopped all actvity. From the online.log: 01:20:38 Maximum server connections 0 01:32:39 Checkpoint Completed: duration was…
Cooked vs Raw (DBA vs Sysadmin)
The sysadmin wants the cooked files on an EXT3 partition in case that matters. -Peter vze2qjg5@verizon.net wrote: > Also to mention that Cooked goes through the file system. What the databas= > e thinks it has written to disk may still be in the buffer when something b= > reaks…
Upgrading server - Do i need to change config ?
"F. LACROIX" <soft @ datacolfrance.com> wrote in message news:44bf5959$0$891$ba4acef3@news.orange.fr... > Hello, > > I was running IDS 7.31 on a quite old PIII 800 with 1Go RAM, my boss > agreed few days ago to replace this old server by a brand new one ... an > HP Proliant ML350…
Re: checkpoint problem
mchivaviro@okzim.co.zw wrote: > I am runnind IDS 7.31 on HPUX 11 and my check points a taking too long. > What do I need to change. > > 12:03:10 Checkpoint Completed: duration was 21 seconds. during the checkpoint run onstat -z then onstat -R | tail -5 several times. How f…
Performance issue after 732 to 94fc6 upgrade
Sorry, the previous posting of with the onstat output file did not have the sequence of onstat commands. They were in order: informix211 /tmp$ onstat -g cac >> retwa.stats.out informix212 /tmp$ onstat -p > retwa.statsdone.out informix213 /tmp$ onstat -d >> retwa.statsdone.out inf…
Down of instance Informix
10:15:58 IBM Informix Dynamic Server Version 7.31.FD8 10:15:58 Who: Session(9812455, nazca@ac1e3375, 1324, -262759576) Thread(10603400, sqlexec, c0000000e4c881a8, 1) File: mtex.c Line: 471 10:15:58 Results: Exception Caught. Type: MT_EX_OS, Co…
Virtual shared memory: aio pool
"Who use the aio pool" Any users writing to chunks that are not using kaio. And the server read/writing filesystem files e.g. writing to message log, reading onconfig file on startup, reading message files if an error occurs. "What is place in the aio pool" I assume AIO (…
Re: Long checkpoint woe
Make sure the KAIO is working. onstat -g ath | grep -i kaio will show if kaio is working, you should have I kaio thread for each NUMCPU defined in your onconfig. Does onstat -g ioq show any values in the "len" and "maxlen" for any gfd's? Post it if unsure. Post onstat -d and ls…
HP-UX KAIOON
I try to run Informix with async. kernel io on a HP Itanium 4 Processor Box running HP-UX 11v2 with Raw Devices. After all configuration steps no kio's showing in "onstat -g iov": IBM Informix Dynamic Server Version 10.00.FC4 -- On-Line -- Up 00:00:18 -- 5702588 Kbytes AIO …
Fragmentation Elimination Problem
I am on version IBM Informix Dynamic Server Version 10.00.FC4.…
Re: cannot start with 4 AIO virtual processor
On Windows platforms IDS is KAIO only, hence in most cases there is no need for more than 1 AIO VP. In IDS versions prior to 9.30.TC6 this limit was enforced and an error was generated when a higher value was used. With KAIO systems the AIO VP is still used for some tasks such …
Re: cannot start with 4 AIO virtual processor
informix can only be run with 1 aio vp under windows. Any other value results in the server being started with 1. Unless 9.40 and 10.x are different (haven't checked)? Regards Stefan ********************************************************************** This email and any fil…
Re: cannot start with 4 AIO virtual processor
BTW, i forgot to tell... the ontape failed and, although, it can be a tape's problem we can cover all posible aspects... we have 4 cpu and 3 of them are assigned to informix and 4gb in ram with 131072 buffers...…
Re: cannot start with 4 AIO virtual processor
"Jaime Casanova" <systemguards@gmail.com> wrote in message news:1137432864.044113.214560@g43g2000cwa.googlegroups.com... > Hi, > > OS: NT4 > IDS 9.21 > > Last saturday i was trying to make a level 0 backup so i execute: > ontape -s -L 0 > > And it gives me this message: > > Warni…
cannot start with 4 AIO virtual processor
Hi, OS: NT4 IDS 9.21 Last saturday i was trying to make a level 0 backup so i execute: ontape -s -L 0 And it gives me this message: Warning: Dynamic Sever 2000 cannot start with 4 AIO virtual processor, limit exceeded. Started with 1 AIO virtual processor. I didn't configure…
RE: Write cache rate
The only things I will say are a) is that you should fill the larger buffer cache with data that can be re-read. With a very large buffer cache clearly some of this will be re-read rarely so the performance increase from more caching tails off. b) IDS 9.40 and 10 allow fraction…
Re: IDS 10 - documentation questions
Oops! I mean IBM Informix Dynamic Server Version 10.00.TC3ET Althought the release notes (idse_win_release_notes_10.0.html) start with:- "Release Notes for IBM Informix Dynamic Server Express Edition for Windows Platforms 10.00.TC3E, 1 July 2005 " so it is TC3E or TCE3T? and …
Re: Sql to concatenate multiple rows to a single row / column
Thank you SaltTan - it works beautifully. BTW, we have IBM Informix Dynamic Server Version 9.40.FC6.…
Re: IDS 10 erratic run times
<david@smooth1.co.uk> wrote in message news:1127598536.808774.302800@g14g2000cwa.googlegroups.com... > > > 1. Try running onmode -F before each run (free shared memory > segments/blocks and general tidy up memory > structures). Could do, but never do before a non-kaio run at it …
Re: Do extents impact speed?
Well logical logs are written to sequentially and read from sequentially as they are backed up. So you want alternate logical logs on seperate spindles or if the SAN will be caching the writes somewhere then you want enough cache dedicated to the logical logs that the backup thre…
Error Dopping Temp DB Space
I am encountering an error when attempting to drop a temporary db space. The reason I am dropping it is because the disk that it resides on went bad. Solaris 9 IDS 9.40.FC5 Here is the output from onspaces: $onspaces -c -d dbs_temp -t -p /export/home/informix/dbspaces/link_dis…
Re: IDS 10 disk configuration
Murray Wood (IList) schrieb: > Neil > > All the events that take place at a checkpoint, including waiting for all > critical processes to get out of critical and cleaning BUFFERS, need to take > place. Then, if you have 10 times as many dirty BUFFERS in a chunk then > this compo…
Re: IDS 10 disk configuration
Neil Truby schrieb: > "Art S. Kagel" <kagel@bloomberg.net> wrote in message > news:42EFD602.60800@bloomberg.net... > >>david@smooth1.co.uk wrote: >> >>>At checkpoint time chunks are assigned round robin to page cleaners for >>>cleaning. >>> >>>ONE CHUNK WILL ONE GET ONE PAGE CLEA…
IDS 10.0 INITIALIZATION ERROR
IDS 10.00 Server instance fails to initialize for the first time and comes out by giving the following error : oninit -iv This action will initialize IBM Informix Dynamic Server; any existing IBM Informix Dynamic Server databases will NOT be accessible - Do you wish to continue…
Re: IDS 10 Express Edition
Note 10.00.xC3 = Enterprise Version 10.00.xC3E = Express Edition http://publib.boulder.ibm.com/infocenter/ids9help/index.jsp?topic=/com.ibm.relnotes.doc/uc3E/idse_win_release_notes_10.0.html Then click on "IBM Informix Dynamic Server Express Edition" in the right pane:…
Onstat -g ses only for DBSA?
Hi, I have got a doubt. There are two servers. One of them with an informix server version: IBM Informix Dynamic Server Version 9.30.UC6W4 and the other IBM Informix Dynamic Server Version 9.40.FC5 When I execute the command Onstat -g ses on the first one (version 9.30), it's…
Onstat -g ses only for DBSA?
Hi, I have got a doubt. There are two servers. One of them with an informix server version: IBM Informix Dynamic Server Version 9.30.UC6W4 and the other IBM Informix Dynamic Server Version 9.40.FC5 When I execute the command Onstat -g ses on the first one (version 9.30), it's…
bad performance on delete
On Informix 7.23, when deleting records on large tables it goes very slow. What should we change to get better performance? $ onstat -p INFORMIX-OnLine Version 7.22.UC2 -- On-Line -- Up 01:06:01 -- 130680 Kbytes Profile dskreads pagreads bufreads %cached dskwrits pagwrits bu…
bad performance on delete
On Informix 7.23, when deleting records on large tables it goes very slow. What should we change to get better performance? $ onstat -p INFORMIX-OnLine Version 7.22.UC2 -- On-Line -- Up 01:06:01 -- 130680 Kbytes Profile dskreads pagreads bufreads %cached dskwrits pagwrits bu…
Re: Informix Performance Issues
Anirudh Chitnis via DBMonster.com wrote: > > I am using 9.30 on HP-UX 11i. The select queries take quite a long tpo > return. The queries are taking index paths and statistics are also updated. > When I tried to look in to the I/O activity, I could find that kio is > having maxl…
Re: Informix Performance Issues
Anirudh Chitnis via DBMonster.com wrote: > > I am using 9.30 on HP-UX 11i. The select queries take quite a long tpo > return. The queries are taking index paths and statistics are also updated. > When I tried to look in to the I/O activity, I could find that kio is > having maxl…
Re: Informix Performance Issues
Anirudh Chitnis via DBMonster.com said: > > I am using 9.30 on HP-UX 11i. The select queries take quite a long tpo > return. The queries are taking index paths and statistics are also > updated. But are they taking the *correct* index paths? I've had this exact problem, possibly…
Re: Informix Performance Issues
Anirudh Chitnis via DBMonster.com said: > > I am using 9.30 on HP-UX 11i. The select queries take quite a long tpo > return. The queries are taking index paths and statistics are also > updated. But are they taking the *correct* index paths? I've had this exact problem, possibly…
Re: Informix Performance Issues
"Anirudh Chitnis via DBMonster.com" <forum@DBMonster.com> wrote in message news:4d71b87ec26b42cbba3bfa8ae42593e7@DBMonster.com... > All, > > I am using 9.30 on HP-UX 11i. The select queries take quite a long tpo > return. The queries are taking index paths and statistics are also…
Informix Performance Issues
"Anirudh Chitnis via DBMonster.com" <forum@DBMonster.com> wrote in message news:4d71b87ec26b42cbba3bfa8ae42593e7@DBMonster.com... > All, > > I am using 9.30 on HP-UX 11i. The select queries take quite a long tpo > return. The queries are taking index paths and statistics are also…
IDS 10 Download?
So many questions... I have played with multiple buffer pools and different page sizes... creating a dbspace with an 8k page size..oh wow! Make size is only 16K though...oracle (where I guess this idea came from) allows 64K! onstat -h (buffer hash chain info) gives two outputs …
Cannot find message file. Check INFORMIXDIR and DBLANG.
im trying to run the oninit -i in the command prompt when the message appear... we installed... IBM Informix Dynamic Server 9.40 IBM INFORMIX-4GL Rapid Development System Version 7.32.UC2 IBM INFORMIX-4GL Version 7.32.UC2 set up sqlhosts, services, onconfig, path... but when tr…
Monitoring CPU usage
Dear All, I am using IDS 7.3 on RS-6000 p-Series with AIX. I have two hardware processors in my server machine, but in onconfig file I found : MULTIPROCESSOR 0 # 0 for single-processor, 1 for multi-processor NUMCPUVPS 1 # Number of user (cpu) vps SINGLE_CPU_VP 0 # If non-zero, l…
Re: oninit process
No am running 1 instance on the server. Am trying to improve the performance of the data base server. Would like to know of how to increase the AIO reads/ writes and also the number of records per second. Kindly provide me with some information in this regards. On Wed, 9 Feb 20…
oninit Prcess in Linux Environment,
Hi Arvind, As with many software questions, the answer is "it depends". It sounds like you don't have much understanding of the IDS architecture or design, so your first step needs to be to read the IDS Administrator's Guide. If you don't have a copy, you can download it from ht…
Websphere hangs with Informix JDBC Driver
Hello, We are connecting to Informix Dynamic Server 2000 Version 9.21 from a J2EE Web application hosted in IBM Websphere 5.0 through JDBC. We are using IBM Informix JDBC Driver 2.21.JC3. We are doing JNDI lookup and using JDBC Connection Pooling. Our application hangs after r…
io/sec
I am on IDS 9.4.TC3. I would like to get the io/sec from the sysmaster table instead of having to look at onstat -g iof. Does anyone know how to do this? Thanks. Lennie Informix DBA Information Technology Tax Team Lake County, IL O: 847-377-2092 C: 847-309-7718 Math illiterac…
Re: Performance Issues
[cutting] > > NUMAIOVPS 6 # Number of IO vps > > Then monitor onstat -g iov. If there are more than one AIO VP with an > io/wup column value less than 1.0 you can drop some. If there are NO > AIO VPs with io/wup less than 1.0 you need to add more. Add two a…
Re: Performance Issues
Roger Cariah wrote: Here's what I see: NETTYPE ipcshm,1,30,CPU # Configure poll thread(s) for nettype NETTYPE soctcp,5,25,CPU # Configure poll thread(s) for nettype You should never use CPU VPs for TCP listeners (ignore the manual). Also shared memory listeners…
Re: Trouble dropping the syscdr database
Andreas Legner <fake@xx.yy.de> wrote in message news:<315hoaF37e30tU1@individual.net>... > wonder what would need so much log space when dropping syscdr ... non empty sendq (trg_send_stxn > table), ... ??? Without any other information, I'd bet that it's due to having to remove …
Re: Fatal error in ADM VP at mt.c:12239
Here is another part of the af file: ===========------------- - - - - - - /home/informix/bin/onstat -F: IBM Informix Dynamic Server Version 9.40.FC2 -- On-Line -- Up 1 days 20:14:49 -- 2549264 Kbytes Fg Writes LRU Writes Chunk Writes 0 8396195 30928…
New Server Configuration
We are moving our informix database and software application to new hardware in a few weeks. I am looking for any suggestions on how to configure the hardware and informix for optimal performance. HARDWARE: SunFire V440 (4 CPU, 8GIG RAM) Sun StorEdge 3510FC (12 disks - 36gb/ea) …
Installing Informix 9.4 on Red Hat Linux Ent 3. Failed.
Red Hat Linux Enterprise version 3. Kernel: 2.4.21-4.EL I am trying to install Informix 9.4 using Unix bundle installer. The installation failed with the following messages: Installing IBM Informix Dynamic Server 9.40 65316 blocks bash: /root/.bashrc: Permission denied bash: /r…
Unable to install Informix IDS 9.40 on RedHat Linux
I am trying to install Informix IDS 9.40 on Red Hat Linux Enterprise version 3. Kernel: 2.4.21-4.EL I am using IBM Unix bundle Installer. Installation failed for every product (ISA, IDS...) with messages like: Installing Server Administrator bash: /root/.bashrc: Permission denie…
RE: Stripe and Mirror Everything?
I was always under the impression that Informix queues io requests per chunk (as seen in onstat -g ioq), so to shorten those queues it makes sense to have many chunks. However, i suppose, even if that is the case, the i/o bottleneck will always on the disk subsystem, not on the d…
RE: Questionable IDS 9.21 performance on HP-UX v11.11
Jason, I think You are having a pure disk bottleneck. For some reason, your server is having HUGE database read and write activity more then 50 disk operations/sec average (I think, including calm night hours) Most of your writes are LRU writes; that means, there is contention…
Re: IBM Informix Dynamic Server Version 9.40.UC3 Crash
I saw a similar problem under 9.40.UC2. Could you please give us more info about this. How are you setting data replication ( which I guess it is HDR ) ? Please give us a detailed procedure. Have you opened a tech support case? esteban.- rick.colonello@marconi.com (Rick Colo…
Re: IBM Informix Dynamic Server Version 9.40.UC3 Crash
rick.colonello@marconi.com (Rick Colonello) wrote in message news:<5762c52.0408090727.2348706e@posting.google.com>... > We have recently run into a failure condition several times when we > have IDS 9.40 UC3 configure for data replication. We do not seem to > see the failure > i…
IBM Informix Dynamic Server Version 9.40.UC3 Crash
We have recently run into a failure condition several times when we have IDS 9.40 UC3 configure for data replication. We do not seem to see the failure if the system is configured in a stand alone state. It does not seem that we are able to perform the same actions to reproduce…
Re: IDS9.4/AIX5.2 performace degradation
Dalibor Krleza wrote: > Ups, sorry.. here it is > ***ONSTAT -g iof*** > > IBM Informix Dynamic Server Version 9.40.FC4 -- On-Line -- Up 06:16:34 -- 943248 Kbytes > > AIO global files: > gfd pathname totalops dskread dskwrite io/s > 3 /dev/rlvinfx01 8 …
Update statistics performance
Hi all Update Statistic takes a long duration of up to 13 hours to complete, our DB is more than 35 gb. I tried to use PDQ ,PSORT_NPROCS and DBSPACETEMP and the was only a slight improvement i.e from 13 to 12 hours. our IDS version is 17.31 uc5 Kindly advice on how this duration …
Re: oninit processes are huge
onstat -g Informix Dynamic Server Version 7.31.UC4 -- On-Line -- Up 7 days 00:30:25 -- 501440 Kbytes MT global info: sessions threads vps lngspins 5 56 12 0 sched calls thread switches yield 0 yield n yield forever total: 258468…
ONCONFIG for 9.40 offered for comment
On Wed, 16 Jun 2004 01:01:12 -0400, Neil Truby wrote: Neil, I'd recommend the following: > 9.40 FC3W2 on HP-UX 11.11 > The server has 6 cpus and 6G of RAM. > 3 other, small, IDS 9.40 instances run on the server, and one small 7.31. > kaio is enabled. > > Just put 9.40 live, and…
Re: NUMAIOVPS setting
On Tue, 01 Jun 2004 04:13:53 -0400, Richard Spitz wrote: OK, a bit of clarity and apology. IFF you are running on a single CPU system with a single CPU VP then you cannot physically get an io/wup value < 1.0. However, if you add a second CPU VP on a P4 or higher (due to the vir…
Re: NUMAIOVPS setting
On Tue, 25 May 2004 08:51:20 -0400, Reinhard Habichtsberg wrote: > Art S. Kagel wrote: >> Once you have a running system, run onstat -g iov, as Madison suggests. If >> there are a few aio VPs with io/wkup less than 1.0 then you are OK. If >> there are many such you can reduce …
Re: NUMAIOVPS setting
Art S. Kagel wrote: > Once you have a running system, run onstat -g > iov, as Madison suggests. If there are a few aio VPs with io/wkup less than > 1.0 then you are OK. If there are many such you can reduce them, but check > across a peak load first. If there are none with io/…
NUMAIOVPS setting
"Bent_Andy" <abent@aetinc.com> wrote in message news:c8t3f0$jj3$1@terabinaries.xmission.com... > > HP-UX 11.11 - 7.31.fd5 - Baan IVc4 (OLTP) > > I have a question about numaiovps. Our current setting is 52 and we > have 68 chunks. Notes from a performance class say if onstat -g…
Re: BUFFERS! Arghhh!!! Please help before I do something silly!
back in the buffers, If your are going to increase buffers I would recommedn increasing LRUS to 256 or 512. esteban.- "Andrew Hamm" <ahamm@mail.com> wrote in message news:<c6n0uj$dlr36$1@ID-79573.news.uni-berlin.de>... > sumGirl wrote: > > I am confused. I posted last week with …
Dose anybody have the dbtop script in the Troubleshooting informix course?
Dears, I study the Troubleshooting ibm informix dynamic server course. At the module 4 exercise need the dbtop script. Dose anybody has this dbtop script and post for me? Thanks. Philip Yeh.…
RE: Long checkpoints on AIX/IDS7.31/IBM Shark
Thank you TBP, Dave & Alex for you suggestions, I have duly increased my LRUS to 128, and CLEANERS & NUMAIOVPS after looking at onstat -g iov and checking the io/wup column. We've found the culprit which affects all hosts connected to the same Shark (and there are quite a few) …
BUFFERS! Arghhh!!! Please help before I do something silly!
sumGirl wrote: > I am confused. I posted last week with questions about how I should > tweak my onconfig after I added memory to my RS6000 (from 4 gig to 8 > gig). One of the comments that really stuck with me and in the > responses many folks agreed with was that I should "up my…
Re: high buffer wait ratio
Hi all, Thanks for the advise given to me. I have made some changes as below and seen some improvement on the database engine. 1)Increase Buffer by double. 2) Reduce the RA values by half. 3) Reduce the LRU_MAX and MIN to 1 and 0. At the same thing, we also going to re-configu…
Long checkpoints on AIX/IDS7.31/IBM Shark
Willem Roos wrote: > List, > > We have very sporadic, very long checkpoints on our IBM RS/6000 boxes > (AIX 4.3.3, IDS 7.31.UD4) connected to an IBM Shark (2105-F20), eg. 66 > seconds to write away 2772 KB. Normally checkpoints are 0 - 1 seconds > for 10 - 20 MB: > > $ onstat -c…
high buffer wait ratio
Andrew Hamm wrote: > > What's the output of > onstat -g iov | head -7 WRONG!!! I mean, what's the output of: onstat -g iof onstat -g iov onstat -F | head -7…
RE: Dirty page queues during a checkpoint (WAS: The old raw devices chestnut)
Thanks Bill, Found it in 7.3 manual also, p 11-53, identical paragraph as in 9.4 manual: "During a chunk write, each page-cleaner thread is assigned to one or more chunks. Each page-cleaner thread reads through the buffer headers and creates an array of pointers to pages that a…
RE: Dirty page queues during a checkpoint (WAS: The old raw devic
http://publibfi.boulder.ibm.com/epubs/pdf/ct1ucna.pdf Page 7-44 for chunk writes, which are the type of writes that are done during page flushing. Regards, Bill > -----Original Message----- > From: Willem Roos [SMTP:wroos@shoprite.co.za] > Sent: Friday, April 16, 2004 5:13 AM …
Dirty page queues during a checkpoint (WAS: The old raw devices chestnut)
They're queued in LRU queues as they become dirty, and then during the checkpoint each chunk with stuff to be written gets assigned to a page cleaner and within the chunk the pages are sorted into sector order prior to writing. So it's highly possible that not all the chunks (and…
Re: The old raw devices chestnut.
"Paul Watson" <paul@oninit.com> wrote in message news:407D3202.E6E8B0A4@oninit.com... > > Absolutely not. Cache access is faster. And it has nothing to do > > with fs or raw I/O. You get EXACTLY the same speed regardless > > of where you got the data from. > [cutting] > > But…
Work group edition - Unlimited edition??
Taken from IBM web site:- =========================================================================== The following Informix Dynamic Server Workgroup Unlimited editions have been added to the IBM Data Management Gold Transaction Processing Bundle for SMB Unlimited: IBM Informix…
Re: The old raw devices chestnut.
"Jim Smith" <jim@jimsmith.demon.co.uk> wrote in message news:hq7AQQApjAfAFwlb@jimsmith.demon.co.uk... > > > >Is it faster I/O requests? > >Or faster I/O overall? > >Or less CPU used? > > > > None of the above. A faster response and or throughput from a user point > of view. Nop…
The old raw devices chestnut.
"Jim Smith" <jim@jimsmith.demon.co.uk> wrote in message news:dS4PuczgskeAFwJq@jimsmith.demon.co.uk... > This question was prompted by a thread on the a postgres mailing list > during which someone (Gregory Williamson) claimed > > <quote> > raw devices, at least on Solaris, are ab…
Do I need more KIO's
can you post the onstat -g iov and onstat -g ioq Tugger wrote: > > Paul Watson wrote: > > > Whats the io/wup from onstat -g iov, if it's less than one then > > I'd leave it alone > > > > Tugger wrote: > > > >>Looking for advice: > >> > >>Users are complaining of slow system > >>…
Cooked files vs. raw partitions
All things being equal raw is always faster. For raw disk I/O, page cacheing and the paging mechanism are not used; the data is read or written directly between the device and the user address space. Thus, raw disk I/O avoids the need to copy between the kernel address space and…
RE: Virtual Processors and CPU-Load
Markus, With 2 Xeon (multithreading) CPU's it really makes sense to allocate 4 CPU VP's (not 2 as You did) to use CPU power more efficiently. The other thing to investigate is the 'BUFREADS by partition' statistics. Please, pay very close attention to those tables and indexes t…
RE: Virtual Processors and CPU-Load
Dont post MIME Have you run the correct update stats? In Informix monitor users -- onstat -u the ready queue -- onstat -g rea the sqls -- onstat -g ses {session number} You need to determine which sessions or parts of the application are causing the load. With 200 users you…
Virtual Processors and CPU-Load
Hi all, we are a little bit confused concerning the CPU-Load of our Informix-Database-Server. (9.4 UC3, RH9 2.4.20) We use a 2-Xeon (3.0 GHZ)-Dell-Server and both CPU's are mostly at 99.9%! All tables and indexes (DBSpaces, Extents, ...) are optimized to the best of our knowledg…
Re: Intermittent Performance Problem - What does oninit do?
On Fri, 12 Mar 2004 12:36:43 -0500, Joel wrote: > Here's the info you requested Art. If you need more, please let me know. > > Thanks for the help. > > Joel <SNIP> Snipped it all as it's hard to read anyway. Looks like you are suffering from buffer and/or LRU queue contention.…
RE: is it ok to use KAIO on HP-UX
Alexey Sonkin wrote: > Andrew, > > Can You imagine, how such a fundamental bug, as that > ontape was unable to restore the database from archive (with KAIO 'on'), > could pass through the QA regression testing? > Only because most testing (very expensive and time-consuming) > wa…
Read only connection
Hi. I have installed IBM Informix Connect 3.82 32 BIT driver for connecting to a Informix Dynamic Server 9 for Linux. I have configured the driver and works fine but I don't know if I can restrict read access. Is there any option for configure the driver in a read only connectio…
Problem installing 9.40 on AIX 5.1
I am trying to install IDS 9.40 on AIX 5.1 and am getting the following error messages which I have never seen before: Installing IBM Informix Dynamic Server 9.40 The file access permissions do not allow the specified action. ksh: /usr/systems/ids/SERVER/IIF.cpi: 0403-016 Canno…
Puzzling performance issue?
Eric wrote: > > Hardware is comprised of 2x112 Mhz with 512 RAM. > > ---------------------------------------------------------------------- > ------ Informix Dynamic Server Version 7.31.UD4 -- On-Line -- Up > 4 days 08:15:53 -- 473136 Kbytes Not just maybe, but definitely th…
Re: K AIO
LSM is not used It is a Compaq HSG80 cabinet with 18, 36 or 72GB disk in RAID 0+1 in combination with a Compaq ES40. Told was that there would be only a minor difference between Advfs and RAW solution for our datbase, so we choose Advfs Since we came from a DS20E dual processo…
RE: K AIO
You must use raw disk to use KAIO. You should see 25% approx speed improvement. What disks are you using? Are you using LSM ? Colin Bull c.bull@videonetworks.com > -----Original Message----- > From: owner-informix-list@iiug.org > [mailto:owner-informix-list@iiug.org]On Behalf …
K AIO
Hi, Is K AIO of any use when the db is on advfs files? (Runinng 7.31 on Tru64 5.1b) How can it be activated? (onstat -g iov doesn't show any kio)…
rebuilding database through DR fails
hi there if i try to rebuild a database from scratch (dbexport schema+unload data) on the primary the secondary crashes. versions are equal and chunk setup at both sides is identical. is there a limit to how much data can be replicated in a burst? any help appreciated regards h…
Re: High lngspins - IDS 9.30 UC2
Thanks to Simmons, Mark and Obnoxio. We are running UPD STATS every night by a cron job. So I don't think UPD STATS would be a potential issue. I will be posting onstat -g spi and other onstat soon as advised by Obnoxio. Hari "Hari Gupta" <hariog@yahoo.com> wrote in message news…
Re: High lngspins - IDS 9.30 UC2
Hmm, well my first inclination would be to recommend that you update statistics, if you have not done so already. You may well be right that the sequential scans were an issue before the upgrade, but I would not rule out that the optimizer is making different [not always good] c…
High lngspins - IDS 9.30 UC2
Hi All, We have recently upgraded IDS 9.21UC3 to IDS 9.30 UC3 on RHL 7.3 (Kernel - 2.4.18-27.7.xbigmem). Platform - Dell PE6600 - Quard Xeon, dual channel, 8GB RAM - HT. Channel-A has 8 72 GB mirror & stripped and Channel-B has got 8 36 GB mirror & stripped. I have been keeping…
RE: onstat -g iof
Hi onstat -g iof will give u disk I/O statistics HITEN -----Original Message----- From: Vaclav.Boura@cpp.cz [mailto:Vaclav.Boura@cpp.cz] Sent: Tuesday, September 30, 2003 4:22 PM To: informix-list@iiug.org Subject: onstat -g iof Hello all, when I perform onstat -g iof I see 8…
RE: onstat -g iof
Hi onstat -g iof will give u disk I/O statistics HITEN -----Original Message----- From: Vaclav.Boura@cpp.cz [mailto:Vaclav.Boura@cpp.cz] Sent: Tuesday, September 30, 2003 4:22 PM To: informix-list@iiug.org Subject: onstat -g iof Hello all, when I perform onstat -g iof I see 8…
Re: onstat -g iof
Vaclav.Boura@cpp.cz wrote: > Hello all, > when I perform onstat -g iof I see 82 sqexplain.out at the end. What does > it mean ? > 84 > sqexplain.out > …
RE: onstat -g iof
It also puts a big performance overhead on your system - slows it down. Don't use it unless totally necessary. -----Original Message----- From: Art S. Kagel [mailto:kagel@bloomberg.net] Sent: Tuesday, September 30, 2003 3:04 PM To: informix-list@iiug.org Subject: Re: onstat -g i…
onstat -g iof
Hello all, when I perform onstat -g iof I see 82 sqexplain.out at the end. What does it mean ? 84 sqexplain.out 86 sqexplain.out …
onstat -g iof
Hello all, when I perform onstat -g iof I see 82 sqexplain.out at the end. What does it mean ? 84 sqexplain.out 86 sqexplain.out …
Tunning
On Mon, 29 Sep 2003 04:21:53 -0400, J.M.Rodriguez wrote: > My server is running on a HPUX ver. 11, use KIO and have over 100 concurrent > users. Normally it works well, but there are punctual moments in that which > the system goes very loaded. I see the processes oninit that co…
IBM Informix Dynamic Server V9.4 and Informix Client SDK V2.81
Folks, the following announcement was issued today by IBM. You can find it online at http://www.ibm.com/isource/cgi-bin/goto?it=usa_annred&on=203-240 or read it past my sig. Regards, Federico (Fred) Hubbard IIUG Board Member Mobile: (520) 400-2415 We Speak Informix www.IIUG.or…
Re: SQL Query hang
Obnoxio The Clown <obnoxio@hotmail.com> wrote in message news:<bked9f$o5bl$1@ID-64669.news.uni-berlin.de>... > Gorazd Hribar Rajteri� wrote: > > > More than a year ago we experienced such kind of trouble. Later we found > > out that index was corrupt, but I have no idea on how …
Re: maxlen in onstat -g ioq
Rüdiger, As I already pointed out, this is normal. It only shows that you do a substantial amount of writes at checkpoint time. What you could do is check your checkpoint duration times in the message log. If they are long and you don't like it because it blocks writers during t…
Re: maxlen in onstat -g ioq
Are you system problems in performance? My system has maxlen very large, but the system has good response. You can change it adding more queues. AIO I/O queues: q name/id len maxlen totalops dskread dskwrite dskcopy adt 0 0 0 0 0 0 …
maxlen in onstat -g ioq
Rüdiger, This is normal. At checkpoint time online writes out the dirty buffers in batches of 150 each for every chunk (300 if the chunk is mirrored). If you have chunks with many dirty pages maxlen will reach 150. Don't ask me why it's 151 in one case. I don't know. Michael …
RE: Physical Logging performance
"Simmons, Keith" <keith.simmons@office2office.biz> wrote: > Yes, this is something I have tried to achieve, it tends to reduce > disk I/O to the Physical Log and make the I/O more efficient. I'm > currently running a PHYSBUFF of 512 (just so you don't get afraid of > big numbers…
IIUG Insider #31 - Highlights: IIUG in HTML, Chris St. Aubin, LUG News and More...
Fans of Informix, the latest IIUG Insider has published via e-mail and will soon be available online at http://www.iiug.org/news/insider.html. Please feel free to pass on this information to colleagues and management as you see fit. This issue's table of contents includes: 1) I…
Re: Bad performance
Put the following into /etc/rc.local test with /sbin/hdparm -t /dev/hda and /sbin/hdparm -T /dev/hda /sbin/hdparm -c1 -d1 /dev/hda .... /dev/hdb .... /dev/hdc It will get a tremedous speedup on ide drives, because you have activated 32 bit and dma mode. It off on d…
Re: Bad performance
You need to look at your SQL and how it is being optimised. Without that there is nothing useful about the diagnostics you posted. Andy "R�diger M�hl" <ruediger.maehl@web.de> wrote in message news:<Xns939D664E7CD70ruedigermaehlwebde@193.101.67.2>... > Hi folks, > > we have …
Re: Bad performance
R�diger M�hl wrote: > Hi folks, > > we have three servers running Linux (SLES7) and > Informix 9.30 (2x) and 9.21 (1x). A developer > has run a script against 9.21 and it worked > fine and performantly. Now running it against > the 9.30ies shows a very bad performance. > > H…
Re: Bad performance
Rüdiger Mähl wrote: > Hi folks, > > we have three servers running Linux (SLES7) and > Informix 9.30 (2x) and 9.21 (1x). A developer > has run a script against 9.21 and it worked > fine and performantly. Now running it against > the 9.30ies shows a very bad performance. > > Has so…
Re: disk utilization HIGH
You need to start with the OS utilities and work down to the application. Some guidlines: using native UNIX tools (I know SUN not HP-UX) iostat, vxstat, mpstat and top. With iostat you can determine the disks getting hit. If you are on smart storage like EMC you will need to …
Permission Error installing Informix 9.4 IDS on AIX 4.3.3
Permission Error installing Informix 9.4 IDS on AIX 4.3.3 When installing informix 9.4 on AIX 4.3.3 I get the following message ############################################### Installing IBM Informix Dynamic Server 9.40 441660 blocks 5240 blocks 69980 blocks 366340 blocks etc/…
Permission Error installing Informix 9.4 IDS on AIX 4.3.3
Permission Error installing Informix 9.4 IDS on AIX 4.3.3 When installing informix 9.4 on AIX 4.3.3 I get the following message ############################################### Installing IBM Informix Dynamic Server 9.40 441660 blocks 5240 blocks 69980 blocks 366340 blocks etc/…
Permission Error installing Informix 9.4 IDS on AIX 4.3.3
Permission Error installing Informix 9.4 IDS on AIX 4.3.3 When installing informix 9.4 on AIX 4.3.3 I get the following message ############################################### Installing IBM Informix Dynamic Server 9.40 441660 blocks 5240 blocks 69980 blocks 366340 blocks etc/…
Permission Error installing Informix 9.4 IDS on AIX 4.3.3
Permission Error installing Informix 9.4 IDS on AIX 4.3.3 When installing informix 9.4 on AIX 4.3.3 I get the following message ############################################### Installing IBM Informix Dynamic Server 9.40 441660 blocks 5240 blocks 69980 blocks 366340 blocks etc/…
Permission Error installing Informix 9.4 IDS on AIX 4.3.3
Permission Error installing Informix 9.4 IDS on AIX 4.3.3 When installing informix 9.4 on AIX 4.3.3 I get the following message ############################################### Installing IBM Informix Dynamic Server 9.40 441660 blocks 5240 blocks 69980 blocks 366340 blocks etc/…
etc/install: etc/brand: 0403-006 Execute permission denied on AIX 4.3.3 and Informix IDS 9.4
When installing informix 9.4 on AIX 4.3.3 I get the following message ############################################### Installing IBM Informix Dynamic Server 9.40 441660 blocks 5240 blocks 69980 blocks 366340 blocks etc/install: etc/brand: 0403-006 Execute permission denied. …
Installing Informix 9.4 IDS on AIX Bombed out with this error
Installing IBM Informix Dynamic Server 9.40 441660 blocks 5240 blocks 69980 blocks 366340 blocks etc/install: etc/brand: 0403-006 Execute permission denied. Server installation returned a Non-Zero value Bundle Install program has finished…
Re: Disk Layout recommendation
Jonathan Leffler wrote: > > Richard Kofler wrote: > > Jonathan Leffler wrote: > > > >>Neil Truby wrote: > >>>"Jonathan Leffler" <jleffler@earthlink.net> wrote: > >>>>You don't mention which version of IDS you are using (nor which > >>>>platform), but I assume it is not 9.40. If …
CDR - How to reorganise "trg_send_sbuf" ?
Hi Madison, thanks for responding. On a testbox i tried to drop and create this table whils CDR was not running, but after that CDR showed all replicates active, no errors, but no replication was done. Alter table next size and create cluster index did not reorganise (why ??) Wh…
onstat -p all zero
Thanks for your reply Jonathan Leffler, I do have a performance problem, some users have complained of 'slows' with the OLTP part of the application. But this hasn't been quantified yet. Without an accurate definition of 'slows' I decided to investigate the performance anyway. T…
Maxlen exceed 25
FRANKLIN TANG wrote: > Hi all, > I use the onstat -g ioq and have the following information > AIO I/O queues: > q name/id len maxlen totalops dskread dskwrite dskcopy > kio 0 0 64 245740605 243860239 1880366 0 > kio 1 0 64 225398151 223644673 1753478 0 > kio 2 0 39 153270901 1517…
KAIO statistics
In article <95qae6$bbh$1@nnrp1.deja.com>, Dr. Pablo <dr_pablo@my- deja.com> writes >I am built a small test database server to test KAIO. >What does it mean when one KAIO is doing nothing and one KAIO has done >everything? > >Here is onstat -d and onstat -g ioq > > >AIO I/O queu…
RE: NUMAIOVPS
This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01C0905B.54B8BA30 Content-Type: text/plain; charset="iso-8859-1" I check max queue length (onstat -g ioq). If max queu…
DISK ARRAY
EMC disks are fast as long as mostly cache is used for i/o. I don't know EMC Clarion, but in EMC Symmetrix (thats what we use) each logical disk (for example 9GB) has its own cache. So, when in normal operating some disks have lots of i/o, and many other disks are doing nothing, …
KAIO ands "onstat -g iov" output
In article <BD256.50944$_h.347139@NewsReader>, "Earle A Long" <earle@btclick.com> wrote: > RTFM .... "Performance Guide, Configuration Parameters and Environment > Variables That Affect CPU Utilization, NUMAIOVPS" :- > If your operating system supports KAIO, the CPU VPs make I/…
CPU VP utilization
I have 2 different servers. 1st - 1 CPU 155 MHz Pentium, 64 MB RAM, 1 HD 2nd - 1 CPU 300 MHz Pentium II, 64 MB RAM, 1 HD Both have IDS 7.2 but they have differences in Informix configuration. 1st 2nd NUMAIOVPS 3 1 CLEANERS 16 1 LRUS 16 8 Here are some outputs from onstat …
Re: CLEANERS
"William Rice" <ricew@operamail.com> wrote in message news:90isbi$1j4$1@nnrp1.deja.com... > In article <3a2c1dd0@news.iprimus.com.au>, > "Andrew Hamm" <ahamm@sanderson.net.au> wrote: > > hanna_shaw@my-deja.com wrote in message > <90gti5$gso$1@nnrp1.deja.com>... > > >Hi, > > > >…
oninit -s at statup?
Hi, Every times after i startup the Hardware, SGI, i noticed that there are quite a number of oninit -s process start running at the background when i do a ps -ef. Same thing when the database go online. What is the oninit -s for? Will these oninit slow down the performance? What…
RE: RAID Question
If the disks are striped by the OS it only gives me 8 volume groups. Each volume group consists of 2 disks. Placing a table across 4 groups will only give me two sets of groups (4 disks) to work with. I can't point to a disk individually unless it is its own volume group. I gues…
FW: questions onstat -g
Sorry, wrong answer. onstat -- doesn't explain the columns to you, it just gives you the onstat options. I've been looking for column explanations myself. Dirk -----Original Message----- From: owner-informix-list@iiug.iiug.org [mailto:owner-informix-list@iiug.iiug.org]On Beh…
RE: questions onstat -g
do an onstat -- and you will get alll -----Original Message----- From: Marat S. Salimov [mailto:maratkotik@mail.ru] Sent: Tuesday, November 21, 2000 4:30 PM To: informix-list@iiug.org Subject: questions onstat -g Where can I find reading about meanings of onstat -g ... columns.…
RE: You've heard it all before: newer, faster server runs slower than older, slower server after data migration
-----Original Message----- From: Obnoxio The Clown [SMTP:obnoxio@hotmail.com] Sent: Monday, November 20, 2000 6:29 PM To: aford@simpletel.com; informix-list@iiug.org Subject: Re: You've heard it all before: newer, faster server runs slower than older, slower server after data mig…
questions onstat -g
Where can I find reading about meanings of onstat -g ... columns. By example onstat -g ioq: dskcopy onstat -g sch: busy wait, spin/waits…
You've heard it all before, cont.
I'm posting some other onstat commands that may help. Informix Dynamic Server Version 7.31.FC4 -- On-Line -- Up 3 days 09:44:13 -- 2545024 Kbytes Profile dskreads pagreads bufreads %cached dskwrits pagwrits bufwrits %cached 261671478 74154240 9591835411 97.27 55502789 5144…
Re: onstat -g iov
From: "Neil Truby" <ntruby@netcomuk.co.uk> > > > Have one AIO with less that 1 io/wup. Keep adding until this happens. > >... or you blow some critical system table parameter related to the number >of processes! Well, you *are* running on HP. :-> >Obnoxio The Clown <obnoxio@hot…
Re: onstat -g iov
From: mgimbert8769@my-deja.com > >I have INFORMIX 7.24.UC7 and I will like to known means of columns >wakeups and io/wup in onstat -g iov command > >AIO I/O vps: >class/vp s io/s totalops dskread dskwrite dskcopy wakeups io/wup > msc 0 i 0.0 17106 0 0 …
onstat -g iov
The column wakeups is literally the number of times each VP was awakened from an idle sleep when it had not been needed then suddenly was. The next column, io/wkup, is how many I/O requests the VP satisfied, on average, each time it was awakened. One use of this last is that if…
shared memory question
The size of resident segment depens on the onconfig parameters like BUFFERS, LOCKS & CONFIGSIZE (for XPS). Hence u cannot directly control the resident segment size but changing the above parameters will change the size requirements. U can find more details in Performance Guide…
moving chunk from one disk to another
We have been experiencing a lot of I/O wait on one set of disks - there are two raw volumes (two chunks) on that set and I want to move one chunk to another disk set on another controller. Using AIX 4.3.3, it is very easy to move a volume around. Then I assume I can just recreate…
Informix/Baan/AIX Performance
"Anderson, Andy" wrote: > > We are experiencing performance issues since upgrading to AIX 4.3.3 from > 4.3.2. The Informix database configuration has not changed and all the > latest patches/fixes have been applied to the OS. We are running on a > AIX4.3.3 / Informix7.31.UC3X1 / …
Re: Tuning advice.
Madison Pruet wrote: > > Well, you do need more buffers. Generally the read cache rate needs to be > pretty close to 99%. You might be able to reduce your checkpoint times even > more by setting LRU_MAX_DIRTY to 2. > > You also have skewed usage of the chunks. From your sample…
Re: Why is rootdbs busy?
The databases are defined in rootdbs, tables defined in lots of chunks. I'm not sure how to read the output of onstat -g dic. It appears that we have set DD_HASHSIZE to 501 and DD_HASHMAX to 4. Very few of the entries currently have a size of 4. The system is relatively idle at t…
RE: Why is rootdbs busy?
Have you moved your logical logs and physical log into different dbspaces? If not, that will explain high I/O activity in rootdbs. -----Original Message----- From: B. Dana [mailto:bgdana@hotmail.com] Sent: Tuesday, August 29, 2000 16:13 To: informix-list@iiug.org Subject: Why i…
Why is rootdbs busy?
According to onstat -g iof, rootdbs appears to be the busiest chunk in the system with 10 times more dskwrite than any other chunk. The performance guide states that "When you do not specify dbspaces in the DBSPACETEMP parameter or the client DBSPACETEMP environment variable, Dyn…
Re: Slow Performance on IDS 7.30
Hi Art, I suppose that the Bufwaits Ration you mentioned is a calculated value. I want to check our system. How is it done? Thanks Art S. Kagel <kagel@bloomberg.net> wrote in message news:39A6B13B.DC42449C@bloomberg.net... > First Jason please do not post MIME/HTMP, this is a …
Re: NUMCPUVPS
Masa wrote: > > Virtual processor summary: > > class vps usercpu syscpu total > > cpu 6 56820.59 10253.74 67074.33 > > aio 40 1144.83 2457.59 3602.42 > > lio 1 7.02 18.85 25.87 > > pio 1 …
RE: RAW DEVICE IO
sar -d 1 60 will show the average activity every second for 60 seconds per partition/slice for all disks. > -----Original Message----- > From: Bantilan, Artemius Ian [mailto:I_Bantilan@islacom.com.ph] > Sent: Tuesday, August 22, 2000 3:39 AM > To: 'informix-list@iiug.org' > Su…
Regading to io/wup
"Manel Falcó i Aige" wrote: > > Where you saw anything about the chunk #5 ?? > by onstat -g iov ? -> gfd 5 0 167 751870 743427 8443 0 The onstat -g ioq you posted. Also look at onstat -D & onstat -g iof. > I know, I know the more machine the better ... ;o) > but…
Re: Informix Maximum Chunk Size
Thomas Parsli wrote: > Can someone tell me why this is a "problem"? Questions like this pops up > all the time, and many believes this is a _limit_ in Informix/IDS/whatever. > > Isn't this a non-problem unless your database is _very_ large (Way larger > than 1TB)? > > Thomas I…
RE: KAIO IDS7.30FC5 on Tru64/DU4.0D
Cy, Have have a couple of huge instances (2GB BUFFERS, 250+ chunks) on DEC/Compaq Alpha and we cured our KAIO problems with these values for the rt subsystem in sysconfigtab: rt: aio-max-num = 32768 aio-max-percent = 10 aio-max-retry = 128 aio-t…
Re: KAIO IDS7.30FC5 on Tru64/DU4.0D
From: "Dewhurst, Cy" <cy.dewhurst@rbch-tr.swest.nhs.uk> > >Can anybody tell me the relationship between BUFFERS/LRUs/CLEANERS and >kernel asynchronous I/O queues? > >I'm getting errors in the online log: > >KAIO: out of OS resources Check your release notes. I know that for HP-U…
KAIO IDS7.30FC5 on Tru64/DU4.0D
Can anybody tell me the relationship between BUFFERS/LRUs/CLEANERS and kernel asynchronous I/O queues? I'm getting errors in the online log: KAIO: out of OS resources after upping the number of BUFFERS, (and accordingly LRUs and CLEANERS). Rather than reduce the values to thei…
Performance Monitoring/Tuning
when you run onstat -p and look at the output , what are the numbers for read cache, and write cache? are they below 90? if so, there probably is something you can do to increase the cache performance. by adding more buffers, you might increase the read cache numbers. if the writ…
AIO VP's -how many?
These are all good rules of thumb some of which (like ==#CPUS and ==#disks) will give you starting values while others (like -g ioq and -g iov) give you monitoring techniques to tune the number of AIO VPs. The rules of thumb that I use are thus: Initial # AIO VPs: IDS Version …
More info on onstat -g ???
Please see http://www.informix.com/answers/english/docs/73ids/4354.pdf look for utilities at the end of index. Dennis. Wu <wuyf@maxis.net.my> wrote in message news:8gcreo$988$1@news.xmission.com... > > Hi, > > Where can I get more information on the onstat -g ??? command ?…
RE: Why the dskreads and dskwrites from onstat -g iof and ioq do
Hello!!! Can I have some attention, please.... Did anybody understand my question???? Shehla > -----Original Message----- > From: Arshad, Shehla [SMTP:SArshad@purolator.com] > Sent: Wednesday, May 10, 2000 12:39 PM > To: 'iiug' > Subject: Why the dskreads and dskwrites from ons…
Raw DiskSpace for the first time
Thanks for your replying at first... So , you mean I need to use the new RAW I/O module first , right ? How can I do that , download some kind of patch and then re-build my kernel , or it is possible only in the new version of Linux kernel ? Is it right that it means there's no…
Why the dskreads and dskwrites from onstat -g iof and ioq do not
I would like to know why the dskreads and dskwrites from onstat -g ioq and onstat -g iof do not match. I ran both commands at the same time but still on some gfds there is a big difference. Can anybody help us understand the difference? We are running ID 7.30.FC7 on HP-UX 11. Ou…
Need for Speed...
"jmorales@nettaxi.com" wrote: > > Hi Gurus, > > I have a query, Tables fragmented into 5 DBSpaces, and the other tables reside into 2 DBSpaces (7 DBSpaces in all), Problem: query is to slow. How can i speed up my query. BTW, were using Metacube Server 4.x. > > TABLE1, TAB…
Kernel I/O on AIX 4.3.x
Hi, I'm running several Informix-Servers on AIX 4.2.1 (Informix 7.30 UC 3) with activated Kernel IO. But when running on AIX 4.3.x I can't see no kio-VP's when I invoke onstat -q ioq or onstat -g glo. I think I configured KIO correctly; in fact I've done the same steps like in AI…
Urgent help needed
Hi I have an urgent problem. I tried to restore a dbspace using 'onbar -r -p dx_cdm_dbs -O' but the restore crashed right after the dbspace was set offline/down. Now I would like have this dbspace back online or dropped. But when I try this : abrudv0_TESTM>onspaces -s dx_cdm_db…
EMC vs. ordinary RAID 5
Hi all, just because some guys of this wonderfull NG told us that we should avoid RAID 5: Here's the result of an I/O throughput comparison unfortunately made on two different platforms: On an EMC with 2TB disk space, 2GB cache connected via 1 x FDDI 100MByte to a HP box I got…
Re: poor (?) perf on NT
From: Stephen_Murray@agsea.com > >I am running a batch process on INFORMIX 7.31TC2 running on NT4.0 >Enterprise SP5 and IBM NetFinity >with 4 CPU and 4G RAM. This same process (called batch1) used to run on a >2-CPU no-name-brand system. >The run time on both systems is 2 hours …
poor (?) perf on NT
I am running a batch process on INFORMIX 7.31TC2 running on NT4.0 Enterprise SP5 and IBM NetFinity with 4 CPU and 4G RAM. This same process (called batch1) used to run on a 2-CPU no-name-brand system. The run time on both systems is 2 hours 5 minutes. The IBM system was suppose…
Re: Using iostat tune informix databases
You can use 'onstat -g iof' to see where the database is writing to, and then take the appropriate steps (move table/dbspaces, add spindles, ...) to correct any bottlenecks. iostat and vmstat are useful, but all they tell you is that a process is being piggy. You need to go to …
Contention on a table
ibogorad@yahoo.com wrote: > > Folks, > > I broke my head over this one. > So, I have this table in a third party application. The table has row > level locking, contains around 400000 rows of 220 bytes each. > > The way it behaves under the load is unique to this table only, the …
Re: NOAGE on hpux
From: "Craig A. Sharp" <csharp2a@earthlink.net> > >I am the Unix Administrator for my company. We currently run an >Informix database server on an HP9000 system running hpux 10.2. >I have been asked to install the patch that provides the NOAGE parameter >for Informix. > >Current…
checkpoint spikes
When onstat -g ioq shows a backlog for aio, try incrementing NUMAIOVPS. A a rule of thumb, two aio VPs per frequently accessed disk. Nona…
Re: Long Checkpoints
Ulrich Eckhardt wrote: > Hi, > > i have a problem with long checkpoint runs on an informix 7.30 UC 10 > running on linux. (Machine is a PIII 500 with 512 MB Memory). > > Sometimes checkpoints takes 15 to 25 seconds. During this > times i have approximately 2000 to 2300 dirty LRU…
Re: Database performance
From: Paul Jazwierski <uszko@earthlink.net> > >Yet another performance question: > >Here is an output of the command: onstat -g wai >which prints out all waiting and sleeping threads. It is consistently >this length. Question: >Is it normal to have this many sleeping and waiting …
onstat -g glo output
Internally we use the gfd (Global file descriptor) instead of simply fd for each of the chunks. This is because the global file descriptor is common for each of the vps while the local file descriptor would not. The maxlen is the maximum length of the queue of outstanding reque…
Re: onstat -g ioq output
In article <38B6BDD9.6B7D1EC4@earthlink.net>, Paul Jazwierski <uszko@earthlink.net> writes >Can somebody explain what exaclty some of those numbers mean? >Here is the listing: >=>onstat -g ioq > > > >Informix Dynamic Server Version 7.31.UC2A -- On-Line -- Up 04:48:47 -- >162720 …
Raw vs Cooked space?
Noel Griffin wrote: Just a couple of comments, Noel: > Hi Paul > > Basically RAW devices (i.e. character block devices) are much faster, and > more robust than filesystem cooked files. There are town main reasons: > > 1. I/O to a Raw device bypasses the kernel IO filesystem…
Few (shorter :-)) questions
Hi, I'm interested is there something wrong with configuration (based on onstat results). First, it is Ultra Sparc computer, with 4 processors (1 processor has affinity set). onstat -g glo gives this output: >>Informix Dynamic Server Version 7.31.UC2 -- On-Line -- Up 15 days 2…
fragment by expression question
"MATTHEW H. DEVLIN" wrote: > > why are all fragments being scanned? I thought that fragments would be > eliminated based on the expression and after not seeing fragments > dropped when querying on just ia_group_id I figured i would use the > exact expression used in fragmenting …
Database monitoring
onstat -D & onstat -g iof will tell you which dbspaces are being hit hardest. onstat -g ppf (if TBLSTATS is set to 1 in the ONCONFIG file) to track table usage. onstat -d to track available space by chunk from which you can calculate the results by dbspace (see mention of dbs…
Stuck in FAST RECOVERY
"Gregory P. Schin" wrote: > > Hi, > > I have IDS 7.31.UC2A installed on Solaris and it has been running fine > for over 1 month. I deleted some data then dropped a few primary keys > on some tables and then added unique indexes. Then there was a power > hit and the system rebo…
Re: The stats of "aio" VP on SingleProc machine in KAIO mode
In article <KSN_3.11459$K%.256066@news.tpnet.pl>, Piotr Wróblewski <ptrwrb@kki.net.pl> writes >I am running IDS 7.30.UC2 server on HP-UX10.20. >My statistics for G50 says, that millions of disk writes go through 'aio', but TRUE. >when we compare 'onstat -g iov' with 'onstat -g…
Re: Chunk Offset address
From: musman@my-deja.com > >I am bit confuse on the Chunk offset address. I have a 9GB disk and have >created 4 raw partitions of 2.01GB each. All these chunks 2GB each will >be used for the same dbspace [datdbs]. The first chunk should have the >offset 0 but what should be the o…
Re: The stats of "aio" VP on SingleProc machine in KAIO mode
In article <KSN_3.11459$K%.256066@news.tpnet.pl>, =?iso-8859-2?Q?Piotr_Wr=F3blewski?= <ptrwrb@kki.net.pl> wrote: > I am running IDS 7.30.UC2 server on HP-UX10.20. > The machine is a single-processor G50 uccupied by about 30 users, > so the 7.30 server does not run as fast as On…
Re: The stats of "aio" VP on SingleProc machine in KAIO mode
>My statistics for G50 says, that millions of disk writes go through 'aio', but >when we compare 'onstat -g iov' with 'onstat -g iof', the sum of disk writes >(-g iof) is nearly equal the count of 'kio' disk writes (-g iov), >and similarly for disk reads. There is bug in Informi…
Re: Dirty LRU exceeding the LRU_MAX of 2%
Andrew Lawrenson wrote : >>Here is what I am seeing. In onstat -R the dirty q's are over 2% dirty. >>onstat -F shows all the flushers as Idle. >> >>I know I have seen this in the post but cannot find it in search. >> >>Attached. >>onstat -R output >>onstat -F output >>onconf…
Re: Oracle coexisting with Informix
In article <816gp2$15u$1@garnet.tc.umn.edu>, Steven Hauser <hause011@garnet.tc.umn.edu> writes >I have run both Oracle and Informix on an HP. Just make sure >the shared memory kernel parameters are set to handle both. >Same with any Unix. > >Of course both the apps are hogs. Th…
Re: Informix Dynamic Server on IBM SSA
>>> David McNight <dmcnight@bju.edu> 11/12/99 04:38PM >>> >Can any one share their experiences, recommendations, pit-falls, >comments about creating an IDS db engineOLTP environment on an IBM SSA >Raid system? We have 2 SSA adapters and have 4 loops with 4 drives >each. The IBM …
Re: Informix Dynamic Server on IBM SSA
From: David McNight <dmcnight@bju.edu> > >Can any one share their experiences, recommendations, pit-falls, >comments about creating an IDS db engineOLTP environment on an IBM SSA >Raid system? We have 2 SSA adapters and have 4 loops with 4 drives >each. The IBM techs for the Smo…
Informix Dynamic Server on IBM SSA
Can any one share their experiences, recommendations, pit-falls, comments about creating an IDS db engineOLTP environment on an IBM SSA Raid system? We have 2 SSA adapters and have 4 loops with 4 drives each. The IBM techs for the Smoothstart services will be coming next Tuesday…
Re: Write cache help
Wayne Trieu wrote: > Hi Rudy and All, > Thank you everybody give me your comments and input, I will try > your advices. > > Rudy, > The reason is set CKPTINTVL to 90 because it I set it to 300 > then my checkpoint duration increased upto 20sec. > > --Wayne > Actual…
onstat -p shows dskreads, dskwrites greater than pagreads, pagwrites. How come?
We have recently noticed that "onstat -p" at one of our instances returns values for dskreads and dskwrites in excess of pagreads and pagwrites respectively. My understanding of those statistics was as follows : pagreads : Number of pages read from disk pagwrites : Number …
RE: KAIO on Sun and CPU question
Dianne, it really depends on how much load you put on your database. If it's basically a single user sytem I would definitely stick to on CPU VP. In any case - it should be either one of the following parameter sets: NUMCPUVPS 2 MULTIPROCESSOR 1 SINGLE_CPU_VP 0 or (probably b…
RE: Physical Log size
----- Original Message ----- From: Link, David A. <DALink@West.com> To: 'Yuri Dovgart' <y_dovgart@tci.ukrtel.net>; <informix-list@iiug.org> Sent: Friday, October 08, 1999 9:15 PM Subject: RE: Physical Log size > Yuri, > see below. > > > -----Original Message----- > > From: Yuri …
Re: Physical Log size
Link, David A. <DALink@West.com> wrote in message news:7tjlri$ra$1@news.xmission.com... > > I have an OLTP database which I need to keep the checkpoints below 5 > seconds, however, my users need to load millions of records periodically. > The database needs to be available 7x24. …
Re: KAIO with Solaris 2.6
I've got to ask. please don't be insulted, are you 100% sure that you are using raw devices?? Paul Watson WF Software Ltd Tel: +44 1436 674729 Fax: +44 1436 678729 www.wfsoftware.com/informix # If you broke it, hide the evidence >>> Francois Baligant <francois@be.euro.net> 09/…
Re: KAIO with Solaris 2.6
Maybe an onstat -g iov and onstat -g iof can help... bladnoch.root 11 / # onstat -g iov Informix Dynamic Server Version 7.30.UC5 -- On-Line -- Up 15:18:52 -- 1089344 Kbytes AIO I/O vps: class/vp s io/s totalops dskread dskwrite dskcopy wakeups io/wup errors msc 0 i …
KAIO with Solaris 2.6
From what I have understand, KAIO is off by default. The release note of my Informix (7.30UC5) running on a Solaris 2.6 (SunOS 5.6 Generic_105181-11 sun4u sparc SUNW,Ultra-250) tells me KAIO is supported. I have several raw devices but also some cooked files. (raw devices …
Re: write cache / NETTYPE
>From: "Obnoxio The Clown" <obnoxio@hotmail.com> >To: Valerie.H.Webber@m1.irs.gov, informix-list@iiug.org >Subject: Re: write cache / NETTYPE >Date: Fri, 24 Sep 1999 13:46:43 BST > >From: Webber Valerie H <Valerie.H.Webber@m1.irs.gov> >> >>How important is the % Write cache on th…
Re: Linux4GL
In article <37E7CB1A.CCA6CB89@bloomberg.net>, Art S. Kagel <kagel@bloomberg.net> writes >Howard Soper wrote: >> >> Can someone tell me which library rpm's need to be installed to be able to >> use Informix 4GL (C4gl or r4gl with custom runner ). > >That depends on which Linux rel…
Re: Linux4GL
Colonel Panic hit it on the head. Just to elaborate the RH 6.0 release uses the egcs compiler and the libraries delivered with 4GL and SDK were compiled with gcc, the libraries are not compatible with that compiler's output. You need to get the GCC compatibility RPMs from Red H…
Re: informix parameters in onconfig file
pankaj wrote: > > Hi , > > Not an Informix Expert but your NUMAIOVPS seems somewhat low. Informix > recommends NUMAIOVPS (2 + number of disks used for online). > Then monitor length of aio queues. onstat -g ioq [Original message SNIPPED] Pankaj, If you have Kernel Asynchronou…
Re: Linux4GL
Howard Soper wrote: > > Can someone tell me which library rpm's need to be installed to be able to > use Informix 4GL (C4gl or r4gl with custom runner ). That depends on which Linux release you have. For some you need nothing. For others, using the egcs compiler, you need the g…
RE: Cook device vs. Raw device
I was under the impression that due to the fact the file was opened with O_SYNC that data integrity was not a concern. definition of O_SYNC - Have each write wait for physicl I/O to complete. (This is not part of POSIX.1 but is supported by SVR4) Will >===== Original Message F…
RE: Cook device vs Raw device
This is a response to the messages I have read so far. One of the loads took around 15 minutes. During which time we were completely i/o bound. I will admit, the disk was over 96% usage the whole time. So maybe we could not see the difference in performance due to the fact the…
Re: RE: Cook device vs. Raw device
>>> "Tyszka, Walt (Walter S)" <wstyszka@ingr.com> 09/15/99 10:05PM >>> >I haven't been following this thread to closely, so pardon me if I am >repeating someone else's observation; but I always thought the most >important difference between raw I/O vs. cooked I/O was data integri…
Cook device vs Raw device
Lloyd AJ Wilson wrote in message ... >Hi Matthew, > >When using cooked files you are basically stuck with the overhead of the OS. >The overhead of the OS downgrades performance with Dynamic server mostly due >to the fact that it needs to use the OS in order to store and retrieve …
pricing for informix info?
Hello, Was wondering what other people out there paid for informix dynamic server 7.3... Basically, i wanted to know if they had a web server licensing schem like microsoft. or ibm's db2 (per cpu license). and would the licenses be transferable if I decided to move from le…
Performance problem
Arvind Sharma wrote: > > Hi all, > Thanks to Art and Jonathan for all their help. We were able to > complete our project and move to production. But we found one problem > there. The system seems to be very slow whenever it accesses DB. It used > to work fine in the test envi…
Tuning Informix 7.2.4
Webber Valerie H wrote: > > Hi All, > > Can anyone take a look at the ONCONFIG file and the output of ONSTAT -P, > ONSTAT -M and part of ONSTAT-G and make some tuning recommendations. This is > running 7.2.4 on a Pyramid UNIX machine with 512M of memory, 4 CPUs and a > 12K line …
Re: onstat -g iov
Pramod Dhumal wrote: > > Hi users, > > Is it possible to configure the number of kio vps shown by "onstat -g iov" Those are not VPs, but threads, as shown in: onstat -g ath |grep kaio One KAIO thread is run on each CPU VP, so the only way to change the number is to change the…
RE: onstat -g iov
This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01BED94E.A49304D0 Content-Type: text/plain If I understand your question correctly, its the NUMCPUVPS in your $ONCONFIG.…
onstat -g iov
Hi users, Is it possible to configure the number of kio vps shown by "onstat -g iov" Thankx ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com…
7.31 upgrade problems
Thanks for all of the tips. The `onstat -g iof` showed that the vast majority of I/O was occurring on the dbspace that contained all of the tables (~33 IO/sec). The dbspace that came in second was the index dbspace (5 IO/sec). The NUMAIOVPS was also set to 2, so that was not h…
What mean NUMAIOVPS
Hi Pascal, With the NUMAIOVPS config paramater you can define how much Asynchronuous I/O Virtual Processors (= processes) you want to have. With more then one AIO VP you can read/write to several disks in parrallel. If this parameter isn't set Informix defines 2 AIO VP's for eve…
Re: performance turning help
Wayne, Check onstat -g ioq see maxlen. If it is large you are waiting for I/O. The question is why ? I/O requests are served by AIO/VPs and by CPU/VPs if KIO is enabled. By default it is. Run onstat -g ioq, if the display says KIO it is this. If it reads CPU then it is disabled. …
RE: onstat -d showing PD and MD Flags
Unlikely to be a false reading, but .. Are there tables in those chunks? Can you access those tables? You can try to bring them up with onspaces aka onspaces -s dbspacename -p chunkpath -o chunkoffset -O -y Murray Wood -----Original Message----- From: Robert Moayedzadeh …
RE: Serious performance issues
One thing I forgot to mention in the last email, the only other major change was that we introduced referrential integrity via primary/foreign key constraints which was not on the previous database. We've had several issues with that already (mostly locking related issues where …
Re: Performance problems
In article <3756CBFE.B27DB9E0@bloomberg.net>, kagel@bloomberg.net wrote: > [ ... snip ... ] > for any busy chunks, with the number of LRUS as a minimum. So if you > increase LRUS to 32 use AIOVPS of 32 otherwise at least 14. Monitor > onstat -g iov at least one or two of th…
RE: Serious performance issues
What is the effect of the application / database redesign? You dont say what hardware configuration, OS, Informix versions .... If IDS, have you run update statistics medium? Do you now have the right indexes for the new application? Can you trace a slow sql from onstat -g se…
Raw device, partitions, chunk...
Hi there, I install IDS 7.3 in Sun Solaris 2.6, and I am confused about the disk config. Please correct my mistakes: 1), disk partition = raw device = slice 1 raw device ( 1 partition) can have one or more chunks, as long as the sum(chunks size) <= 2GB so for disk c0t0d0, parti…
Raw device, partitions, chunk...
Hi there, I install IDS 7.3 in Sun Solaris 2.6, and I am confused about the disk config. Please correct my mistakes: 1), disk partition = raw device = slice 1 raw device ( 1 partition) can have one or more chunks, as long as the sum(chunks size) <= 2GB so for disk c0t0d0, parti…
Raw device, partitions, chunk...
Hi there, I install IDS 7.3 in Sun Solaris 2.6, and I am confused about the disk config. Please correct my mistakes: 1), disk partition = raw device = slice 1 raw device ( 1 partition) can have one or more chunks, as long as the sum(chunks size) <= 2GB so for disk c0t0d0, parti…
Re: Online Config Changes
From: "Carlson@WHSmith" <carlson1@bellsouth.net> > >Not necessarily. The variables can be reconfigured within the ONCONFIG >file while the engine is up; they won't take effect until the engine is >bounced. There's quite a bit of stuff that can be set dynamically. For example, o…
Re: Effect of disk striping on disk layout
From: John Bejarano <jbejaran@my-dejanews.com> > >My new company has an INFORMIX server that is agonizingly slow. Much of >this may be due to the application running against it, but I can tell >that disk I/O on this system was poorly implemented. I've suggested >ways of balanci…
Effect of disk striping on disk layout
All, My new company has an INFORMIX server that is agonizingly slow. Much of this may be due to the application running against it, but I can tell that disk I/O on this system was poorly implemented. I've suggested ways of balancing I/O (i.e. putting heavily hit tables on sepa…
Memory Usage on Informix 7.24
LEE Hsin wrote: > > Hi, everybody=20 > > I have a question and hope you could give me suggestions. Now, we are = > developing an application on NEC UP machine (UNIX) with Informix 7.24. = > After starting up Informix, we use onstat utility to see how many memories = > used by Inf…
Re: Number of oninit processes
mperrior@my-dejanews.com wrote: > > In article <7gm8ig$5vn$1@news.xmission.com>, > Willaert Doris <doris.willaert@suzuki.be> wrote: > > > > Online 7.3 UC6 on RS6000 AIX 4.2.1 (390) > > > > I have 3 instances running on this system. For the first system I have 12 > > oninit proc…
Monitoring documentation
Hello all, I am trying to document things that need to be monitored on our database (7.30.UC3 on HP-UX 10.20) and I am wondering if anyone has any more suggestions for things to look at. Here is what I have so far. Locking number of currently held locks - (onstat -u) …
The ready queue Full but Unix not busy
We are experiencing an engine go-slows with all queries take much longer than they should. The ready queue (onstat -g rea) constantly shows 10+ threads, but Unix is only 30% busy (no waiting on IO) ? Can anyone explain the lngspins column ? Geoffrey.poole@ogs.co.uk <mailto:Geoffr…
Cleaners
Stephen Faehn wrote: > > Please forgive me if this is posted twice > ----------------- > Online 7.24UC3 > Solaris 2.5.1 > > Given that Cleaners are assigned to chunks in the order that the chunks > are created (and I don't know the order) how can I determine which cleaner > from …
HP, KAIO and statistics. What's wrong ?
I have 2-processor SUN and 2VP: Virtual processor summary: class vps usercpu syscpu total cpu 2 40.46 1.46 41.92 aio 1 0.03 0.14 0.17 tli 1 0.12 0.31 0.43 lio 1 0.0…
Sysmaster Question(s)
Hello all, I am working on gathering information that is found in the onstat commands but I would prefer to do it with the SMI tables so I can store it in a table and do some trending. I am currently on 7.30.UC3 on HPUX-10.20 and there are a couple of things that are really stu…
Re: KAIO and Informix and HP-UX 11.0
> I suppose that a message should appear in MSGPATH (i.e., online.log) when > Informix starts which indicate that kaio is enabled also onstat -g ioq, > iov or ath doesn't show anything about kaio or kio Yes, you should see a message in the IDS log when the engine is brought up. …
KAIO and Informix and HP-UX 11.0
Hi, Though I'm not subscribed to list maybe somebody is willing to help. Please reply via mail. The problem(s): 1) I'd like to enable KAIO just for testing to see, is it faster or not. System is K370 running HP-UX 11.0 and Informix 7.30 UC6 I suppose that a message should app…
Excessive number of oninit processes
Use onstat -g ioq to ensure that you are using KAIO (you'll see kio entries in the I/O queue table). If you are, then set NUMAIOVPS=1 for your servers - this is all you need when using KAIO. Neil Truby Londis Stores Hampton Hill, UK Tauren Mills wrote in message ... >I have an…
RE: onstat -g sch , Busy Waits ?
According to "Informix, DBA Survival Guide" by Joe Lumbley, on page 260, Monitoring Virtual Processors, "When a CPU VP does not have a thread to run, the process performs a 'busywait' . This is a loop of instructions designed to wait a short time". So comparing CPU VP Number 3, …
Re: MORE RAM - BIG CONTROLLER CACHE / DB ON RAW - DB ON FS
Willem Roos wrote: > > Greg wrote: > > > > [...] Staged / asynchronous writes are about > > all controller memory is good for (and it's *really* great for that...) > > What are staged / asynchronous writes, and why is it the only thing > controller memory is good for? > > -- > /*…
checkpoint time > 15 sec.
michael wallace wrote: > > I am currently running informix 7.3 on an IBM S70 with 2GB men and 4 > CPU's, and 10 mirrored ssa 4.5 GB disks. > CHKPTINVL 300 > LRU 8 > LRU_MIN_DIRTY 2 > LRU_MAX_DIRTY 3 > PAGE_CLEANERS 4 Recommendatations are hard without more info li…
Use memory better
vmstat is the place to start. If you are not seing anything under the "pi" column, then you probably can increase memory usage. However, I sense that your main goal is to improve performance. Hate to say it, but before I decided that I needed to increase memory utilization, I'…
Re: Disk Sizes
Bill, One approach is to balance the total I/O demand of your server(s) with the total I/O bandwidth of your disks and I/O channels. I've never seen or heard of any non-mainframe processor running any DBMS that will ask for more than 10 MB per second (sequential) or 800 I/O per …
Re: Question about onstat -g iov
In article <364A2076.6B785D07@informix.com>, Jacques P Renaut <jrenaut@informix.com> writes > >Hmm, I've never actually noticed that but this is what I'd guess is happening. >The msc vp is used mainly used when users connect to the system to do >password lookups and such. The me…
Re: Question about onstat -g iov
Carlos Bolden wrote: > I have a question: > > I was watching system activiy via onstat -g iov and here I s what I was > seeing > [snip] > If you look you can see the msc io thread is wakeing up and doing nothing. > Is it that there is nothing to do or just waking up and not doin…
Question about onstat -g iov
I have a question: I was watching system activiy via onstat -g iov and here I s what I was seeing AIO I/O vps: class/vp s io/s totalops dskread dskwrite dskcopy wakeups io/wup kio 0 i 36.7 1416204 1057863 358341 0 1245645 1.1 kio 1 s 34.9 134598…
Re: Page cleaners & LRU contention...
In article <362F4074.C8744205@aethos.co.uk>, Graham Mitchell <graham.mitchell@aethos.co.uk> writes >Hi guys and gals, > ( On HP-UX 10.20 K-Series 6 CPU ODS 7.24UD6) > > I recently upped the number of page cleaners on a > real time system with 16 chunks from 8 to 16. > > ( …
Page cleaners & LRU contention...
Hi guys and gals, ( On HP-UX 10.20 K-Series 6 CPU ODS 7.24UD6) I recently upped the number of page cleaners on a real time system with 16 chunks from 8 to 16. ( it seemed like a good idea ) It had 8 LRU queues LRUMAX/MIN at 8 and 4 and 30,000 BUFERS . i.e a ma…
Re: Temp DB space question
Temp size depends on various variables including size of your database and database server and space available, but no you should not combine your temp dbspaces into one. They are all used in parallel. While the server is in use try running onstat -D and onstat -g iof to see th…
Re: I/O Q length
Sadagopan, Sathish wrote: > > Hi, > If the I/O queue length is large for a system using KAIO and all raw devices > which parameters need examination ? > ('-g ioq') - The CPU vp queues (for KAIO) are showing large 'maxlen' values. My suggestion? Disable KAIO and return to AIO VP…
I/O Q length
Hi, If the I/O queue length is large for a system using KAIO and all raw devices which parameters need examination ? ('-g ioq') - The CPU vp queues (for KAIO) are showing large 'maxlen' values. TIA Sathish Sadagopan…
Re: TUNING:aio parameters on AIX
Art S. Kagel wrote: > > Dave Thacker wrote: > > > > Platform: IBM Rs/6000 J30 AIX V4.1.5 > > Engine Online DSA 7.23 > > > > From much reading of vmstat, iostat, and xmperf we appear to be I/0 bound > > on our production machine. > > While investigating the problem I came a…
Re: TUNING:aio parameters on AIX
Dave Thacker wrote: > > Platform: IBM Rs/6000 J30 AIX V4.1.5 > Engine Online DSA 7.23 > > From much reading of vmstat, iostat, and xmperf we appear to be I/0 bound > on our production machine. > While investigating the problem I came across a configuration for aio > server…
Re: Informix 7.1 on Digital UNIX - raw or cooked?
In article <6tjo83$t34$1@news.xmission.com>, jcubero@iag.net (mail) wrote: > > I am running Informix 7.1 on Digital UNIX 4.0, and getting ready to set > up a > new dB with 8 gB of RAID-1 disk space. My question is whether I'm > better > off using raw or cooked devices. I've he…
Informix 7.1 on Digital UNIX - raw or cooked?
I am running Informix 7.1 on Digital UNIX 4.0, and getting ready to set up a new dB with 8 gB of RAID-1 disk space. My question is whether I'm better off using raw or cooked devices. I've heard that Digital has great Disk I/O, and I might be better off running cooked. Can anyo…
Wan Traffic/Disk I/O
Hi. Here is the scenario: LAN A LAN B _____________________ ____________________ ------------ | | -------------- | | Machine A |e1______| | | Machine C | | -------------…
Re: Page cleaners
Hi, Normand Bedard wrote: > = > I would like to know if: > = > 1) you assign one page cleaner per disk or one page cleaner per chunk? I would assign one page cleaner per disk. But this is only usefull if you assign your chunks to your dbspaces in the right order and if you ba…
Re: CPU vp total time
Normand Bedard wrote: > > Hi, > We have a SUN SPARC 2000 with 8 CPU's, 7 of them are bind to Informix. > We have Informix 7.23 on Solaris 2.4. After running the command "onstat > -g glo" we get a total cpu time of 161668.46. After 60 seconds, we run > the command again an…
CPU vp total time
Hi, We have a SUN SPARC 2000 with 8 CPU's, 7 of them are bind to Informix. We have Informix 7.23 on Solaris 2.4. After running the command "onstat -g glo" we get a total cpu time of 161668.46. After 60 seconds, we run the command again and get 161535.23. 161668.46 - 161535.23 =…
onstat -D vs onstat -g iof
Informx gurus: --------------------------- This is a copy of a post that I previously send, however seems that because of the problems with the informix-list not many people had the opportunity to read it. I am sorry if you already read this message. ----------------------------…
onstat -D vs. onstat -g iof
Informx gurus: Could some one explain the output of onstat -D and compare it with the output of onstat -g iof? On my online 7.23 running on AIX 4.2 I get the following for onstat -D: address chk/dbs offset page Rd page Wr pathname .... 400382c8 2 2 1 40261 303…
Re: Onload is too slow
In article <35BCE7AF.2711@bellsouth.net>, carlson1@bellsouth.net wrote: > Raghava Ponnapalli wrote: > > > > Hello, > > > > We have 1.2 G database that's taking about 2-3 hrs to load using onload > > from a flat file. I turn off logging when I onunload. This is 7.13 UC2 on > > S…
Re: Onload is too slow
Raghava Ponnapalli wrote: > > Hello, > > We have 1.2 G database that's taking about 2-3 hrs to load using onload > from a flat file. I turn off logging when I onunload. This is 7.13 UC2 on > Solaris 2.4. Here are some of our settings for onload: OK . . . logging is off . . . > …
Re: onload performance
Try turning off your indexes during the load. You will need to resync the indexes after the load though. How often are you commiting? Doing so less often should help. How many checkpoints occur during the load? What is the avg checkpoint length? Can you provide an onstat -p afte…
Re: Onload is too slow
I think your problem is about the amount of indexs on your table why don�t you remove some or all of your index and (re)create the indexs after you finish, Juan Enrique Flores jeflores@ref.pemex.com Raghava Ponnapalli <kponn@worldnet.att.net> wrote in article <6p0s3l$3q8@bgtnsc0…
shm initialization problem solved - was NUMAIOVPS
Answer to my own question - shm init problem solved at last NUMAIOVPS was not set (look at my onconfig file). I changed the parameter to 1 (defeult is 6 or num chunks * 2, whichever is greater) according to the book from Elisabeth Sato- Informix Performance Tuning (p. 66/67): …
shm initialization problem solved - was NUMAIOVPS
Answer to my own question - shm init problem solved at last NUMAIOVPS was not set (look at my onconfig file). I changed the parameter to 1 (defeult is 6 or num chunks * 2, whichever is greater) according to the book from Elisabeth Sato- Informix Performance Tuning (p. 66/67): …
shm initialization problem solved - was NUMAIOVPS
Answer to my own question - shm init problem solved at last NUMAIOVPS was not set (look at my onconfig file). I changed the parameter to 1 (defeult is 6 or num chunks * 2, whichever is greater) according to the book from Elisabeth Sato- Informix Performance Tuning (p. 66/67): …
Re: latch/lock , buffer - questions.
Sadagopan, Sathish wrote: > > Hi All, > 1) When a thread needs a buffer to read in data , does it acquire any > latches/locks.How is the allocation done ? This is all explained in the Administrator's Guide. Basically the thread hashes into the LRU queues selecting a queue at …
Re: checkpoint duration
Try these: 1. Increase the size of the physical log to eliminate checkpoints triggered by that being 75% full 2. Increase the NUMAIOVPS until you see the IO operations performed by the AIO VP's in onstat -g iov gradually reducing (usually one to two orders of magnitude) 3…
Re: Bringing up Online on NCR- MP RAS
Infodata wrote: [SNIP] > >:14:33:55 I/O error , Primary Chunk '/dev/rdsk/rootdbs' -- Offline > >:14:33:55 I/O read() chunk 1, pagenum 0, pagecnt 1 --> errno=6 > > > >Error number 6 is "no such device or address". Better check that > >/dev/rdsk/rootdbs actually exists and is a va…
Re: AIO virtual processor
Also sprach <dwillem@ibm.net> : :In the event viewer of Windows NT (4,0), everytime the server is started, we :see the next warning : :INFORMIX-OnLine Database Server cannot start with 2 AIO virtual processors, :limit exceeded. Started with 1 AIO virtual processor. : :What to do …
AIO virtual processor
Hi, We're running Informix 7.23TC1 on a Digital Alpha 4100 with 3 processors. In the event viewer of Windows NT (4,0), everytime the server is started, we see the next warning : INFORMIX-OnLine Database Server cannot start with 2 AIO virtual processors, limit exceeded. Started …
Re: Disk I/O problems? I think .....
First, the simple answer. KIO is kernal asynchronous I/O. Now to your other problem - what does your database structure look like? How many dbspaces do you have? What does an onstat -D show? I'm not a big fan of Raid5 for database applications in any event...... Vic Pat Milit…
Disk I/O problems? I think .....
Hi there, We think we are having disk i/o problems, our vendor doesn't see any problems, wondering if someone hs any suggestions. We are running a Sun UltraEnterprise 4000 with a Raid5 Disk Array from Storage Computer. The raid5 disk array is made 8 drive plus 1 extra drive f…
query about benchmark
Hi, when I obtained the following information from the benchmark function of Informix OnLine XPS 7.1. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ********************************************************** c6p11sum60.lst = results of hwonstat script while …
Re: LRU Parameters
David Kosenko wrote: > > Also sprach "Art S. Kagel" <kagel@bloomberg.com> : > > :By the way: Joao's CLEANERS value is much too low. With 32 LRUs one > :should have 32 CLEANERS unless one has > 32 chunks then add more than > :32 cleaners. You should have: #Chunks <= #CLEANERS >…
Re: LRU Parameters
Also sprach "Art S. Kagel" <kagel@bloomberg.com> : :By the way: Joao's CLEANERS value is much too low. With 32 LRUs one :should have 32 CLEANERS unless one has > 32 chunks then add more than :32 cleaners. You should have: #Chunks <= #CLEANERS >= #LRUs to :minimize checkpoint …
Re: Question about KAIO
In article <6glba9$ojq$1@news.xmission.com>, ccremid <ccremid@saadev.saa.noaa.gov> writes > >Informix gurus: > >Basic Information: On-line 7.23UC1, AIX 4.2 , 1 CPU > >Can some one explain the output of onstat -g ioq. Specifically the >lines that refer to kio. I have two servers …
Re: Question about KAIO
ccremid wrote: > > Informix gurus: > > Basic Information: On-line 7.23UC1, AIX 4.2 , 1 CPU > > Can some one explain the output of onstat -g ioq. Specifically the > lines that refer to kio. I have two servers with similar configuration, > but when I run the onstat command I got t…
Question about KAIO
Informix gurus: Basic Information: On-line 7.23UC1, AIX 4.2 , 1 CPU Can some one explain the output of onstat -g ioq. Specifically the lines that refer to kio. I have two servers with similar configuration, but when I run the onstat command I got the following output. INFORMI…
Re: Hardware RAID vs OnLine Mirroring
In article <6gaf8b$o4m$1@news.xmission.com>, Glyn_Balmer_at_erith@smtpgwy.supertension.com wrote: > > I have picked up on Dennis Harding's response regarding > Informix-OnLine and RAID. > > We are shortly upgrading our server, UNIX and OnLine engine to an ICL > …
Archive / Logical Log Backup To Disk
I have been following this thread with some interest of late. I was always under the impression that if you backup to disk rather than tape then you are at the same risk as if you use cooked files rather than raw disk, i.e. (quoting from the Informix OnLine Ad…
Re: HP vs Informix mirroring
I had the same expirience as Irwin. HPUX 10.20 INF-ONL 7.14UC? We made a mirroring with informix. And the reads has all gone to one (the first, the original disk) disk. after the explanation from Irwin its clear why!!! Therefore HP-Mirroring is much much better/faster and so on. …
Re: HP AutoRAID question....
In article <6dk05n$l0q@sjx-ixn6.ix.netcom.com>, Ray Garrison <apsnet@ix.netcom.com> writes: DUDES...I am a hp hareware/informix guy...show this to look at.. 1 - Check the kernel config in sam and make sure that you are not runing the singel user config (the default for HP-UX ins…
Re: HP AutoRAID question....
In article <34fc9cfe.90032039@10.209.30.200>, jharris@westpac.com.au (Jason Harris) wrote: >Billy, > >The main thing have noted on HP performance is that KAIO is slower >than AIO VPs. But AIO VPs use a lot more CPU resources than KAIO. For >example an archive on KAIO shows very…
Re: HP AutoRAID question....
Billy, The main thing have noted on HP performance is that KAIO is slower than AIO VPs. But AIO VPs use a lot more CPU resources than KAIO. For example an archive on KAIO shows very little CPU usage, about 10% of 5 CPUS whereas using the AIO VPs uses 50% of three CPUs plus 5 - 1…
onstat counter size
Could anyone tell me at what value the onstat counters wrap. I am particularly interested in the following: onsta -D page I/O for chunks onstat -g iof disk I/O for chunks onstat -p server profile (I/O, ISAM, CPU) onstat -g glo virtual processes From observation…
Re: Best disk partioning for 23GB drives?
Hmmm, if you're mirroring, you'll have to use one disk as primary and the other one as mirror. Essentially your usable bandwidth is equal to that of one disk, probably between 3 and 7 megabytes per second for serial reads. I wouldn't expect great throughput, you'll want to be …
Best disk partioning for 23GB drives?
I am using Online 7.23 on a Sun Ultra 2. I have 2 23 GB Seagate drives on two different controllers. What is the best strategy for slicing the disks for best I/O throughput. I also plan to use Informix mirroring for the dbspaces. Any help would be most appreciated. Partha Du…
Re: KAIO vps, and bufwaits
Neil, The number of kio vps is determined by the number of cpu vps configured on your instance. I also think that you get a max queue of 16 pretty quickly. I have seen my queue lengths on a heavily loaded system reach 32. Does anyone know what a high queue length is? Does a hig…
Re: KAIO vps, and bufwaits
In article <34DB88BE.56A3@netcomuk.co.uk>, Neil Truby <ntruby@netcomuk.co.uk> writes >I've recently moved a poorly-performing database server from a Sun Sparc >20 to a Sun E4002 with 1.5 GBytes of memory, and 2 processors. It's >running superbly now, but I'm still keen to know w…
Re: KAIO vps, and bufwaits
Neil, Dont forget that BUFFWAITS do not always mean you dont have enough buiffers. If one thread A wants a record stored in buffer X but thread B is updating a record that is also in buffer X, thread A gets a BUFFWAIT. Jason On Fri, 06 Feb 1998 22:03:42 +0000, Neil Truby <ntru…
KAIO vps, and bufwaits
I've recently moved a poorly-performing database server from a Sun Sparc 20 to a Sun E4002 with 1.5 GBytes of memory, and 2 processors. It's running superbly now, but I'm still keen to know where my bottlenecks are. onstat -g ioq consistently shows my kio VP with a maxlength of…
Re: informix mirroring
In article <6am7a1$ct0@bgtnsc01.worldnet.att.net>, Robert Higgins <robhigg@worldnet.att.net> writes >i am having a problem with disk i/o - i am currently utilizing an ibm ssa >with 8 disk (4x4) with informix mirroring >when i run an iostat (aix) it shows my hardest hit drives are…
Re: informix mirroring
Robert Higgins wrote: > i am having a problem with disk i/o - i am currently utilizing an ibm ssa > with 8 disk (4x4) with informix mirroring > when i run an iostat (aix) it shows my hardest hit drives are the ones that > are mirrored. i have hardly any hits on the regular disks…
Re: onstat -g ioq ??
On Wed, 28 Jan 1998, Jeremy Hawkey wrote: > I 'm sorry to be such a peasent, but does this mean; looking at the > activity on these gfd's I need to add another AIO vp or not. In the > manual it says if maxlen or len is high add another aio, I think it is > referring only to the…
Re: onstat -g ioq ??
Jeremy Hawkey wrote: > > Have a undocumentated name in my ioq what is gfd ???? Please help > > AIO I/O queues: > q name/id len maxlen totalops dskread dskwrite dskcopy > adt 0 0 0 0 0 0 0 > opt 0 0 0 0 0 …
informix mirroring
i am having a problem with disk i/o - i am currently utilizing an ibm ssa with 8 disk (4x4) with informix mirroring when i run an iostat (aix) it shows my hardest hit drives are the ones that are mirrored. i have hardly any hits on the regular disks - i have also split my data ac…
Re: onstat -g ioq ??
In article <6alfmp$npo$1@cubacola.tninet.se>, Jeremy Hawkey <jeremy@aristotle.algonet.se> writes >Have a undocumentated name in my ioq what is gfd ???? Please help > > >AIO I/O queues: >q name/id len maxlen totalops dskread dskwrite dskcopy > adt 0 0 0 0 …
Re: onstat -g ioq ??
Jeremy Hawkey wrote: > > Have a undocumentated name in my ioq what is gfd ???? Please help > > AIO I/O queues: > q name/id len maxlen totalops dskread dskwrite dskcopy > adt 0 0 0 0 0 0 0 > opt 0 0 0 0 0 …
onstat -g ioq ??
Have a undocumentated name in my ioq what is gfd ???? Please help AIO I/O queues: q name/id len maxlen totalops dskread dskwrite dskcopy adt 0 0 0 0 0 0 0 opt 0 0 0 0 0 0 0 msc 0 0 …
Re: Another checkpoint situation
At checkpoint time one page cleaner is assigned to queue up the addresses of modified buffers to the global file descriptors for its assigned chunk. (This assumes that you are not using Kernel IO) It appears that all of your work between the check- point was for one chunk and th…
Re: Disk Storage
"S.Sathish" <ssathish@getafix.cmc.net.in> wrote in article <6aahth$dq3@cssun.mathcs.emory.edu>... > hi, > The chapter on performance tuning in the book Informix > Unleashed,says 'store the dbspaces which are prime real estate near the > center of the disk' This rule of thumb (RO…
Re: chekcpoints, BUFFER settings, and optimization
David Williams wrote: [Prior discussion and details SNIPPED] > Checkpoints are faster and LRU cleaners faster with more cleaners > on a single cpu vp machine. > Art was right, I was wrong. Experience over deductive reasoning. > Well I live and learn..one for the FAQ! …
Re: tables and dbspaces
In article <66pid7$ah4@cssun.mathcs.emory.edu>, Nigel Gall <nigelg@ppsl.com> writes > >At 03:45 PM 12/11/97 EDT, you wrote: >> >>I wonder if there is any problem with creating one dbspace per table? >>We have about 130 tables, and this grouping can help us to monitor the >>I/O re…
Re: chekcpoints, BUFFER settings, and optimization
David Williams <djw@smooth1.demon.co.uk> wrote: > No! Surely the whole idea is to minimize disk I/O. When possible, yes. But a certain amount of disk i/o is inevitable. And we don't want to do it all in one lump during which all other activity is halted - you want to do it a b…
Re: chekcpoints, BUFFER settings, and optimization
In article <348e13e8.3351787@news.monmouth.com>, David Kosenko <dkosenko@monmouth.com> writes > David Williams <djw@smooth1.demon.co.uk> wrote: >>>INFORMIX-OnLine Version 7.22.UC1 -- On-Line -- Up 49 days 04:48:56 -- >>>85264 Kbytes >>> >>>Profile >>>dskreads pagreads bufreads …
Re: Logical Logs -Explain
In article <3485C2BE.73FA@bloomberg.com>, "Art S. Kagel" <kagel@bloomberg.com> writes >Almost, Mark. It would be more accurate to say that a foreground write >happens when an application thread needs a buffer to write into and >cannot get access to one after a specified number o…
Re: Logical Logs -Explain
Mark Collins wrote: > > > Regarding Flushing of logs/buffers to disk > > 1)What is a FOREGROUND WRITE? > A foreground write is a very bad thing for performance. Basically, there are three ways > for modified pages to be written back to disk from the buffer cache: > 1.…
Re: Questions on INFORMIX 7.13 and CPU VPs
sujata_soman_at_omm-la2-infotech-001@internet.omm.com wrote: > 1. Is it true that we can configure only one NETTYPE connection on the > CPU VP ? Currently, both my NETTYPE connections ( SOC and SHM ) are > configured on CPU VPs. If my assumption is true, does INFOR…
Re: Questions on INFORMIX 7.13 and CPU VPs
In article <638pt8$2h7@cssun.mathcs.emory.edu>, sujata_soman_at_omm- la2-infotech-001@internet.omm.com writes > > Hi everybody, > Some more questions for everybody. Feel free to answer > . I have a lot of questions on CPU VPs and performance. Here goes: > > some b…
Questions on INFORMIX 7.13 and CPU VPs
Hi everybody, Some more questions for everybody. Feel free to answer . I have a lot of questions on CPU VPs and performance. Here goes: some background info: OS -AIX 4.1 Informix : 7.13 UC1 Number of CPUs - 8 1. Is it true that we can co…
oninit processes
System: AIX 4.2 ODS : 7.14 UD1 No of CPU : 1 Chunks : all raw devices. Hi, I'm just puzzled by the no of oninit processes when on-line starts up. It seems these oninit processes are related to the NUMAIOVPS onconfig parameter. By default , the NUMAIOVPS is left blank, w…
Re: gfd virtual processor class...
June - sounds reasonable, thanks. I'll have to count tomorrow & see if they jive. Greg (from my alter ego at home...) June Tong wrote: > > : I was looking through the output of "onstat -g ioq", and it occurs to me > : I don't have a clue what VP type "gfd" is (see snippet belo…
Re: gfd virtual processor class...
: I was looking through the output of "onstat -g ioq", and it occurs to me : I don't have a clue what VP type "gfd" is (see snippet below). Can : anybody clue me in?? It's not a VP type. It's an I/O queue. I think it's Global File Descriptor (or something like that). Basica…
Re: HELP: Informix Online on HP-K460 is NOT-SCALABLE?
James Francis asks: > We have an HP-K460 server running HP-UX 10.20 attached to an EMC high-speed > disk array. > Our database is around 100GB. > > When we run our application with one user everything performs lightning > fast. > As more users degrade, the performance continues t…
Re: onstat -u, B-flag
Alexander Selg wrote: > > Hello All ! > > The command "onstat -u" gives some information about the userthreads. In > the 2.column you can see the flags to each thread. The 1.position > indicates the resource a thread is waiting for. > My question is: if there is a "B" on the 1.po…
RE: Help - 567: Cannot write sorted rows. 28: No space left on device.
Himnesh, The ORDER BY clause will create temporary file(s), the following precedence applies: * PSORT_DBTEMP environment variable * DBSPACETEMP environment variable * DBSPACETEMP configuration parameter ( onconfig file ) * /tmp You must point to a valid temporary dbspace for D…
Re: Mirroring
Jay Aymond wrote: > > "Art S. Kagel" <kagel@bloomberg.com> wrote: > > >Jay Aymond wrote: > >to wait for page flushes during checkpoints. I run my busiest servers > >with > >LRU_MAX_DIRTY=3 and LRU_MIN_DIRTY=0 90% LRU Writes, these puppies fly! > > > >Art S. Kagel > > Thanks for …
Re: Mirroring
"Art S. Kagel" <kagel@bloomberg.com> wrote: >Jay Aymond wrote: >> >> I am adding mirroring to my Informix Online 5.x installation. Right now, I have >> Cleaners set to 2 for my two primary disk drives. Once I have enabled >> mirroring, should I change the number of Cleaners fr…
Informix OnLine on RAID drives
Hello, Has anybody experienced setting up Informix Online 7.x on RAID (Redundant Array of Independent Disks) disk drives? Any performace improvement or suggestion for how to set them up (RAID 0, 1, 2, ...6)? I'm wondering specially between using either Informix mirroring or har…
Performance advice
We have Informix 7.13 online engine which up until now has been running perfectly on a single processor sun server. However the demand on the server has increase as users(up to 20 max) are running large population programs. These jobs are taking hours to run and I am looking for…
Re: "lazy"stored procedures-- WARNING: LONG MESSAGE
In article <5mmpum$2jq@cssun.mathcs.emory.edu>, Oscar Goldes <ogolde@impsat1.com.ar> writes > >------ =_NextPart_000_01BC6CEB.02CFABD0 >Content-Type: text/plain; charset="us-ascii" >Content-Transfer-Encoding: 7bit > > > >-----Mensaje original----- >De: Denham.M@amstr.com [SMTP…
Re: I/O write () chunk 1
In article <5mvavm$jg8@cssun.mathcs.emory.edu>, Croft, Evelyn <croft.evelyn@dorseylaw.com> wrote: >Hello Everyone, > >Can anyone tell me the cause/meaning of the following problem. > >I/O error 'read': expect 2048 actual -1 addr 0x16dc0 errno 5 retrys 0 >I/O error 'read': expect …
RE: "lazy"stored procedures-- WARNING: LONG MESSAGE
------ =_NextPart_000_01BC6CEB.02CFABD0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit -----Mensaje original----- De: Denham.M@amstr.com [SMTP:Denham.M@amstr.com] Enviado el: Wednesday, May 28, 1997 9:00 PM Para: ogolde@impsat1.com.ar CC: informix-l…
Re: Informix vs. Sybase vs. Oracle vs. (gasp) MS SQL Server
In article <5ith88$14g@mew.corp.sgi.com>, Pablo Sanchez <pablo@mew.corp.sgi.com> writes >[ 1 - I've snipped, what I believe, were a whole bunch of unrelated > newsgroups from this note. I've left only the comp.database.* > > 2 - If you disagree with what I've written, let'…
Re: LRUS vs. CLEANERS
In article <33219A97.790C0F1B@www.weideneder.de>, Stefan Weideneder <stefan@www.weideneder.de> writes >KENDRICKS.CHERYL@heb.com wrote: >> >> The number of Cleaner's does not only depend on the number of disk but also >> the the number of LRU Queues (LRU). You should then set you …
Re: Tuning CPUVPS/AIOVPS
In article <32FFA371.749@cobe.com>, Edward Bidinotto <edbid@cobe.com> writes >On 7.11 if you run > >ONSTAT -G SCH > >What does the busy waits column mean? Is 0 a good number for AIO or CPU >VP's? >Does it mean that there are sufficent AIO or CPU vp's and nothing is >waiting or is…
Tuning CPUVPS/AIOVPS
On 7.11 if you run ONSTAT -G SCH What does the busy waits column mean? Is 0 a good number for AIO or CPU VP's? Does it mean that there are sufficent AIO or CPU vp's and nothing is waiting or is it just the opposite saying that all of the VP's are being used up and you need more…
Re: Physical Log Boundedness...
To clarify: by bounded, I mean being limited by the ability to write to the disk fast enough to not block the CPU waiting for the I/O to complete. Greg wrote: > > Anybody got some good tricks to relieve Physical log boundedness when > doing massive Insert/Update/Deletes??? > > T…
Re: Slow system ?! - using Informix 7.x on Sun Sparc 1000
In article <5ceths$m9u@cssun.mathcs.emory.edu>, Mario Estrada <marioestrada@guate.net> writes >Hi George! > >Your problem is with the CHECKPOINT DURATION, and the factors affecting = >this period of time are: 1) How many dirty pages must be written to disk = >from the buffer cach…
RE: Slow system ?! - using Informix 7.x on Sun Sparc 1000
Hi George! Your problem is with the CHECKPOINT DURATION, and the factors affecting = this period of time are: 1) How many dirty pages must be written to disk = from the buffer cache and 2) How fast the dirty pages can be written 1) How many dirty pages must be written to disk f…
RE: Table io rate
Hi All ! onstat -g iof is used to show chunk I/O activity, as the dbspace is not listed use onstat -d to find it as long as both are listed in the same order. This would show table i/o statistics if you specifically create only that table in that specified dbspace. Anoher meth…
Re: Table io rate
At 11:38 AM 1/15/97 -0700, Sean Wong wrote: >Can somebody give me answers on following questions: > >1. How can I find out disk io, e.g. read/write access for a given table >2. How can I find out disk io, e.g. read/write access for a given process Jon C. Vemo (jvemo@cyberspace.…
RE: Table io rate
Sean Wong wrote: > Can somebody give me answers on following questions: > >1. How can I find out disk io, e.g. read/write access for a given table >2. How can I find out disk io, e.g. read/write access for a process Jon C. Vemo (jvemo@cyberspace.com) replied: ------------------…
SMI: VP level I/O stats - 7.2
I need to obtain VP level I/O statistics (like reads, writes, buffer reads, buffer writes, etc.) from 7.2 online via SMI. These pieces of information are avilable from onstat with -g iov and -g iob options. Tech support hasn't been a successful option so far! Any help or pointe…
Re: SMI: VP level stats
In article <58ser5$e3j@bigboote.WPI.EDU>, Arun K Shastry <aruns@owl.WPI.EDU> writes >I'm interested in getting VP level I/O statistics >like reads, writes, buffer reads, and buffer writes. >These are avilable via onstat with -g iob and -g iov, >however I need to get at them via …
SMI: VP level stats
I'm interested in getting VP level I/O statistics like reads, writes, buffer reads, and buffer writes. These are avilable via onstat with -g iob and -g iov, however I need to get at them via SMI.…
Re: Online V7 and Parallel Queries
In article <329b4022.18982794@news.dircon.co.uk>, Jeremy Russell <jeremyr@dircon.co.uk> writes >jeremyr@dircon.co.uk (Jeremy Russell) wrote: > >>Is it true that PDQ, parallel queries in OnLine V7.x will use both >>primary chunks and mirror chunks to retrieve data concurrently whe…
RE: What do you know about the btclean thread ?
Stephan, The btree cleaner thread is responsible for going through all indexes after a delete has occurred and removing any deleted entries. When a row is deleted from table that is indexed, Informix sets a flag on the index entry to indicate the entry no longer exists. This …
Re: Q: Informix req. dedicated Host?
Databases and NFS both use lots of i/o. If you do not have lots of SCSI controlers I would separate the two services or get lots of i/o channels on one machine to handle both services. For a one box example, have 2 or more i/o channels for Informix disk arrays and 2 or more addi…
Re: NUMAIOVPS setting for KAIO
Chao Y. Din (cdin@csc.com) wrote: : Fred Krefting wrote: : > : > David Samuels wrote: : > > : > > ==========Lin-Chuan Lee, 7/29/96========== : > > What is recommended setting in general ( assume on platform : > > with no KAIO) ?? A Performnace tuning guide I got in class : > > s…
Re: NUMAIOVPS setting for KAIO
Fred Krefting wrote: > > David Samuels wrote: > > > > ==========Lin-Chuan Lee, 7/29/96========== > > What is recommended setting in general ( assume on platform > > with no KAIO) ?? A Performnace tuning guide I got in class > > states 1x number of disks but I also remeber the in…
Re: Informix 7.1.2.UC1: LRUS in /usr/informix/etc/onconfig
This is a multi-part message in MIME format. --------------C4C26D4394 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit David Williams wrote: > > In article <4rsf8p$kt@sjx-ixn4.ix.netcom.com>, Stuart Cracraft > <cracraft@ix.netcom.com> writes > >The…
Re: OnLine 7.12: Fragment Elimination Problem
David Williams (djw@smooth1.demon.co.uk) writes: I believe that Informix does not do fragment elimination when it uses an index - all it has to do is use the index to get to the data - fragmnent elimination only occurs when indicies are not used. The idea is that if you…
Re: Oninits Running Amok...
OK - got some more info...it looks like the only time the CPUVP's run amok is when our Powerbuilder client connects across a slow (dialup) IP link and is downloading client code changes from a table (Select...) that contains updated app code in BLOB's. This would explain the lac…
Re: Oninits Running Amok...
In article <31D9457E.5C90@eds.com>, Greg Moye <msmcl301.gmoye01@eds.com> writes >We have 7.13.UC2 running on Solaris 2.4 w/ 2 Sparc CPU's. I occasionally >see both CPU VP's chewing CPU like crazy, yet there's few if any Buffer >Reads or any other evidence of productive work goin…
Re: DBIMPORT Problem
Vikram wrote > >(Informix 5.0) > >The files were created on disk under the directory /root/xxxx.exp >However when I run the dbimport command from /root as > dbimport -c xxxx >an error appears as >*** prepare sqlobj >229 - Could not open or create a temporary file. >…
Re: LRU writes
brian, we should keep this either as private e-mail or just to the list, as i get two messages for everything that gets send out! not a big deal, but kind of a pain. the advantage of the list is that other people can see it and throw in ideas. it can be difficult to diagnos…
Re: I/O error, Primary Chunk offline
adel@q8petroleum.com.kw wrote: : Hi informix 'ers : In the morning I found Informix online 5.0 offline and a message in turbo.log : says : : I/O error 'read': expect 32768 actual -1 addr 0xaad errno 5 retrys 0 : I/O read() chunk 1, pagenum 2733, pagecnt 8 --> errno = 5 : -- Onli…
Re: 2Gb vs 4Gb Disks - Which is faster????
melvin, go with the 2gig drives. last time i checked, informix imposes a 2gig addressing limit on the database. that is, the offset + the dbspaces size cannot exceed 2gig. regards, bob baskett _______________________________________________________________________________ Subj…
2Gb vs 4Gb Disks - Which is faster????
We are trying to decide whether to go with 2gb or 4gb HP drives for our database using Informix. The HP salesman says that the 4gb drives are faster than the 2gb drives which is probably true. What I would prefer though is to go with many smaller 2gb drives so that I can spread m…
Re: KAIO clarification.
Bruce Cota (cota@dpg.rnb.com) wrote: : Hello folks, I could use a little clarification about using KAIO under : SOlaris. We are running On-line 7.11 under Solaris 2.4. An informix : engineer told us that we should set NUMAIOVPS to use more than one : AIOVP and this would have …
KAIO clarification.
Hello folks, I could use a little clarification about using KAIO under SOlaris. We are running On-line 7.11 under Solaris 2.4. An informix engineer told us that we should set NUMAIOVPS to use more than one AIOVP and this would have a major impact on performance. However: - E…
Online 7.11.UC1 performance
Dear All, We are having performance problems running Online 7.11.UC1 on Solaris 2.4. This system is slower than when we were runnning version 5 on Solaris 2.3. The degredation seems to be and overall thing with input/update programs and reports being slower. We have checked the…
Informix OnLine Dynamic server 7.1 & IBM RS/6000 SMP systems
Dear all, I would like to know what kind of parameter(s) is(are) used in the informix OnLine Dynamic server 7.1 to set it up to take an advantage of n (n=2,4,..) processors in IBM's Symmetrical MultiProcessing systems like J30 or R30? Thanks a lot. Eagerley waiting for replies, …
Re: Informix disk mirroring
In article <3ueg3n$5qg@host-04.colby.edu>, dwcooley@colby.edu (David W. Cooley) wrote: > We are running INFORMIX/Online 5.0 with INFORMIX based mirroring on an > HP 9000 G40 running HP-UX 9.04. We're running 4.11 on Pyramid SMP hardware, and their DC/OSx 1.1 operating system (e…
Re: table usage profile in 6.x 7.x
Saeed Talebbeik (saeed@sap-ag.de) wrote: : Folks, Is there any statistics kept within the online 6.x or 7.x : system that shows how many I/O operations have been performed : on a particular table? The question that I want to answer is to : run a benchmark on my application and fi…
PRESS INFORMIX-OnLine Dynamic Server Available on IBM AIX Version 4 Operating System
INFORMIX-OnLine Dynamic Server Available on IBM AIX Version 4 Operating System Uniforum, Dallas, Tex. (March 14, 1995) -- Informix Software, Inc. (NASDAQ:IFMX), the leader in parallel processing database technology, today announced availability of INFORMIX(R)-OnLine Dynamic Serv…
Re: Keeping clean pages in shared memory
Raj Gopalakrishna writes: |> I am aware of the fact that flushed pages are not removed from the |> cache but what I was trying to say that the effectiveness of the cache is lost |> for writes (flushes) while it still works for page reads (lookups). This is |> because the number o…
Re: Keeping clean pages in shared memory
In article <3j5crk$566@infmx.informix.com>, davek@informix.com (David Kosenko) writes: |>Path: informix.com!davek |>From: davek@informix.com (David Kosenko) |>Newsgroups: comp.databases.informix |>Subject: Re: Keeping clean pages in shared memory |>Date: 2 Mar 1995 21:20:52 GMT |…
Re: Why several oninit processes in ver 6.0?
In article: <3eke1u$65f@eos.ap.org> malhotra@eos.ap.org (Rajesh N. Malhotra) writes: > > > Informix Gurus, > > When we initialize Informix 6.0 using the oninit (or the tbinit) > command, there are seven processes started. Any reason why so many? At > present we are using Online…
Re: Is anybody using Sun RAID/Informix?
Disk E Systems writes: >....(above question) This question has expired here. Would someone have the original question? We have lots of high speed, I/0-accelerated RAIDs installed on SPARC systems, using a variety of databases. Michael Willett Storage Computer Corp. 11 Rivers…
Re: Disk Crash killing logs
Joe Lumbley writes: >Suppose you have ...a disk crash. How badly are you hurt...? Data damage from disk crashes should be a thing of the past. With the new, fast & intelligent Redundant Arrays of Inexpensive/Independent Disks, and their I/O high acceleration technology, large…
Re: does SUN DB excelerator work? how?
We are currently using DBE 1.3, SunOS 4.1.3, and Informix On-line. The DBE product impoves virtual memory, improves aysnchronous I/O, and increases the number of file descriptors. The asynchronous I/O enhancements reduce CPU overhead for asynchronous disk I/O for raw partitions…
Re: Super-fast Hardware for INFORMIX/XENIX
In article <1993Mar5.144530.18228@sdc.com> emike@sdc.com (E. Mike Durbin) writes: >>The configuration I have been recommended is a 66Mhz 486DX with 128k RAM Cache >>and 16Mb SIMMS Memory. For the disk I can choose either 340Mb SCSI hard drive with >> a fast access speed or twin 2…
Informix problem
Informix Users, Below are the code sections where the records are inserted into the table and then the code where the data is retrieved. Once again the process that occurs is: o receive tx from process a place record in master table place re…
Re: Chunk Writes
Maria Childress wrote: > Does anyone know what a chunk write is? Does a chunk write relate to > a chunk of disk on the OnLine system? Or does it relate to the buffer > queues? "Chunk Write" refer to the flushing dirty buffers in shared memory back to disk during the che…
Re: Chunk Writes
Intergraph Corporation TIM ============================================================================ E-Mail Memorandum Hi all, Does anyone know what a chunk write is? Does …
Re: Print wide mode
Here is a script that, when piped to, will give a choice of options e.g. No Code Action ============================================== 1) S Display to the screen - 80 columns. 2) SW Display to the screen - 132 columns. 3) P Print - 80 column mode. 4) PW Prin…
Informix on a WANG VS 7310
Hello World! Anybody with experience on a WANG VS 7310 running Informix? I have a client with the following: 24 Megabytes RAM 8 hard disk units of 1 Gigabyte each 1 hard disk unit of 454 Megabytes 1 hard disk unit of 75 Megabytes 25 users What do I need? Is this enough? Anoth…