Re: informix parameters in onconfig file

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 Pankaj edem wrote in message <37E80BC8.A3377C80@wsisiz.edu.pl>... >Can anyone advise me what can i make better in onconfig file >Informix 7.30FC7 ( will be 7.31FC2 soon ) on HP-UX 11 ( machine V2500 6 >processors) >i am using kaio ( kaioon=1 ) >Any advise will be very helpful >Thanks! > >And this is my onconfig file : >#************************************************************************** > ># ># INFORMIX SOFTWARE, INC. ># ># Title: onconfig.std ># Description: Informix Dynamic Server Configuration Parameters ># >#************************************************************************** > ># Root Dbspace Configuration > >ROOTNAME rootdbs # Root dbspace name >ROOTPATH /opt/informix/chunki/r01.inf2> # Path for device containing root >dbspace >ROOTOFFSET 20 # Offset of root dbspace into device >(Kbytes) >ROOTSIZE 200000 # Size of root dbspace (Kbytes)> ># Disk Mirroring Configuration Parameters > >MIRROR 0 # Mirroring flag (Yes = 1, No = 0) >MIRRORPATH # Path for device containing mirrored>root >MIRROROFFSET 0 # Offset into mirrored device (Kbytes)> ># Physical Log Configuration > >PHYSDBS physdbs # Location (dbspace) of physical log >PHYSFILE 50000 # Physical log file size (Kbytes)> ># Logical Log Configuration > >LOGFILES 39 # Number of logical log files >LOGSIZE 10240 # Logical log size (Kbytes)> ># Diagnostics > >MSGPATH /opt/informix/inf2.log # System message log file path >CONSOLE /dev/null # System console message path >ALARMPROGRAM /opt/informix/etc/log_full.sh # Alarm program path>SYSALARMPROGRAM /opt/informix/etc/evidence.sh # System Alarm program >path >TBLSPACE_STATS 1> ># System Archive Tape Device >#TAPEDEV /dev/null >TAPEDEV /archive/archive0 >TAPEBLK 16 # Tape block size (Kbytes) >TAPESIZE 20000000 # Maximum amount of data to put on tape >(Kbytes)> ># Log Archive Tape Device > >#LTAPEDEV /dev/null >LTAPEDEV /dev/rmt/0mn # Log tape device path >LTAPEBLK 16 # Log tape block size (Kbytes) >LTAPESIZE 4000000 # Max amount of data to put on log tape >(Kbytes)> ># Optical > >STAGEBLOB # Informix Dynamic Server/Optical >staging area > ># System Configuration > >SERVERNUM 2 # Unique id corresponding to a Dynamic>Server instance >DBSERVERNAME inf2 # Name of default database server>DBSERVERALIASES inf2s,inf2o,inf2r # List of alternate dbservernames >#NETTYPE sqlmux # Configure poll thread(s) for nettype >NETTYPE soctcp,5,128,CPU # Configure poll thread(s) for nettype >NETTYPE soctcp,5,128,NET # Configure poll thread(s) for nettype >NETTYPE ipcshm,1,32,CPU # Configure poll thread(s) for nettype >DEADLOCK_TIMEOUT 60 # Max time to wait of lock in>distributed env. >RESIDENT -1 # Forced residency flag (Yes = 1, No = 0) > >MULTIPROCESSOR 1 # 0 for single-processor, 1 for>multi-processor >NUMCPUVPS 6 # Number of user (cpu) vps >SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vps>to one > >NOAGE 1 # Process aging >AFF_SPROC 0 # Affinity start processor >AFF_NPROCS 0 # Affinity number of processors> ># Shared Memory Parameters > >LOCKS 8000000 # Maximum number of locks >BUFFERS 2000000 # Maximum number of shared buffers >NUMAIOVPS 2 # Number of IO vps >PHYSBUFF 64 # Physical log buffer size (Kbytes) >LOGBUFF 64 # Logical log buffer size (Kbytes)>LOGSMAX 500 # Maximum number of logical log files >CLEANERS 127 # Number of buffer cleaner processes >SHMBASE 0x0 # Shared memory base address >SHMADD 65535 # Size of new shared memory segments >(Kbytes) >SHMTOTAL 0 # Total shared memory (Kbytes). >0=>unlimited >CKPTINTVL 300 # Check point interval (in sec) >LRUS 127 # Number of LRU queues >LRU_MAX_DIRTY 1 # LRU percent dirty begin cleaning limit > >LRU_MIN_DIRTY 0 # LRU percent dirty end cleaning limit >LTXHWM 50 # Long transaction high water mark>percentage >LTXEHWM 60 # Long transaction high water mark >(exclusive) >TXTIMEOUT 0x12c # Transaction timeout (in sec) >STACKSIZE 512 # Stack size (Kbytes)> ># System Page Size ># BUFFSIZE - Dynamic Server no longer supports this configuration >parameter. ># To determine the page size used by Dynamic Server on your >platform ># see the last line of output from the command, 'onstat -b'. > > ># Recovery Variables ># OFF_RECVRY_THREADS: ># Number of parallel worker threads during fast recovery or an offline >restore. ># ON_RECVRY_THREADS: ># Number of parallel worker threads during an online restore. > >OFF_RECVRY_THREADS 10 # Default number of offline worker>threads >ON_RECVRY_THREADS 50 # Default number of online worker>threads > ># Data Replication Variables ># DRAUTO: 0 manual, 1 retain type, 2 reverse type >DRAUTO 0 # DR automatic switchover >DRINTERVAL 30 # DR max time between DR buffer flushes >(in sec) >DRTIMEOUT 30 # DR network timeout (in sec)>DRLOSTFOUND /opt/informix/etc/dr.lostfound # DR lost+found file path > ># CDR Variables >CDR_LOGBUFFERS 2048 # size of log reading buffer pool >(Kbytes) >CDR_EVALTHREADS 1,2 # evaluator threads >(per-cpu-vp,additional) >CDR_DSLOCKWAIT 5 # DS lockwait timeout (seconds) >CDR_QUEUEMEM 4096 # Maximum amount of memory for any CDR >queue (Kbytes)> ># Backup/Restore variables >BAR_ACT_LOG /tmp/bar_act.log >BAR_MAX_BACKUP 0 >BAR_RETRY 1 >BAR_NB_XPORT_COUNT 10 >BAR_XFER_BUF_SIZE 31> ># Informix Storage Manager variables >ISM_DATA_POOL ISMData # If the data pool name is changed, be >sure to > # update $INFORMIXDIR/bin/onbar. Change to > # ism_catalog -create_bootstrap -pool <new name> >ISM_LOG_POOL ISMLogs > ># Read Ahead Variables >RA_PAGES 32 # Number of pages to attempt to read>ahead >RA_THRESHOLD 16 # Number of pages left before next group> ># DBSPACETEMP: ># Dynamic Server equivalent of D

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 Asynchronous I/O (KAIO) enabled, as edem does, you only need a few AIO VPs, usually 4-6 for logging plus 1 per chunk for any COOKED chunks. So if you only use RAW chunks then only a few AIO VPs are needed. Art S. Kagel