Oninit cdi / Archive
Talk to an expert →

Perfomance Tuning

Posted in 2003

Summary

A DBA running IDS 7.31 on HP-UX 11.0 (4 GB RAM, 40 GB database, ~300 users) reported gradual slowdowns and checkpoints taking about 10 seconds instead of 6, and posted the full onconfig asking which Informix and Unix parameters to tune. Replies were brief and general: one suggested raising BUFFERS (since memory allows), making key tables/indexes resident, and watching table extents; others argued over whether to start tuning with the SQL/optimiser plans or with the Unix and engine configuration. No specific diagnosis or confirmed fix is recorded in the thread.

Auto-generated by DrWatson from the posts below — may be imperfect; read the full thread.

Topics: High Availability & Replication, Backup & Restore, Performance & Tuning, Storage & Space Management, Server Administration, Transactions, Locking & Isolation, Logging & Checkpoints, Networking & sqlhosts Configuration, Platform-Specific Issues, Versions, Editions & End-of-Life

Bonny — — source: Usenet: comp.databases.informix

I have IDS 7.31 running on HP-UX 11.0 and 4 Gig of memory. I have a 40 Gig database with on average 260 users and at peak about 315 users. I want to tune my database , as it has shown signs of slowing down recently. Checkpoints are taking on average 10 seconds,under normal processing there should be 6 seconds. I have posted my onconfig file,onstat -p .What parameters should i consider for tuning both from the Informix side and Unix side. Onconfig #************************************************************************** # # INFORMIX SOFTWARE, INC. # # Title: onconfig.std # Description: Informix Dynamic Server Configuration Parameters # #************************************************************************** # Root Dbspace Configuration ROOTNAME rootdbs # Root dbspace name ROOTPATH /dev/rootdbs # Path for device containing rootdbspace ROOTOFFSET 0 # Offset of root dbspace into device (Kbytes) ROOTSIZE 1000000 # Size of root dbspace (Kbytes) # Disk Mirroring Configuration Parameters MIRROR 0 # Mirroring flag (Yes = 1, No = 0) MIRRORPATH # Path for device containing mirroredroot MIRROROFFSET 0 # Offset into mirrored device (Kbytes) # Physical Log Configuration PHYSDBS rootdbs # Location (dbspace) of physical log PHYSFILE 250000 # Physical log file size (Kbytes) # Logical Log Configuration LOGFILES 30 # Number of logical log files LOGSIZE 5000 # Logical log size (Kbytes) # Diagnostics MSGPATH /u/informix/online.log # System message log file path CONSOLE /dev/console # System console message path ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program pathSYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program path TBLSPACE_STATS 0 # System Archive Tape Device TAPEDEV /dev/rmt/c8t3d0BEST # Tape device path TAPEBLK 6144 # Tape block size (Kbytes) TAPESIZE 80000000 # Maximum amount of data to put on tape (Kbytes) # Log Archive Tape Device LTAPEDEV /dev/rmt/1m # Log tape device pat LTAPEBLK 1024 # 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 1 # Unique id corresponding to a DynamicServer instance DBSERVERNAME ok_srvr # Name of default database server DBSERVERALIASES ok_tcp # List of alternate dbservernames NETTYPE ipcshm,1,500,CPU # Configure poll thread(s) fornettype NETTYPE soctcp,1,5,NET # Configure poll thread(s) for nettype DEADLOCK_TIMEOUT 60 # Max time to wait of lock indistributed env. RESIDENT -1 # Forced residency flag (Yes = 1, No = 0) MULTIPROCESSOR 1 # 0 for single-processor, 1 formulti-processor NUMCPUVPS 2 # Number of user (cpu) vps SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vpsto one NOAGE 1 # Process aging AFF_SPROC 0 # Affinity start processor AFF_NPROCS 0 # Affinity number of processors # Shared Memory Parameters LOCKS 400000 # Maximum number of locks BUFFERS 200000 # Maximum number of shared buffers NUMAIOVPS 8 # Number of IO vps PHYSBUFF 128 # Physical log buffer size (Kbytes) LOGBUFF 128 # Logical log buffer size (Kbytes)LOGSMAX 100 # Maximum number of logical log files CLEANERS 127 # Number of buffer cleaner processes SHMBASE 0x0 # Shared memory base address SHMVIRTSIZE 300000 # initial virtual shared memorysegment size SHMADD 40000 # Size of new shared memory segments (Kbytes) SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited CKPTINTVL 360 # Check point interval (in sec) LRUS 127 # Number of LRU queues LRU_MAX_DIRTY 1 # LRU percent dirty begin cleaninglimit LRU_MIN_DIRTY 0 # LRU percent dirty end cleaning limit LTXHWM 50 # Long transaction high water markpercentage LTXEHWM 60 # Long transaction high water mark (exclusive) TXTIMEOUT 0x12c # Transaction timeout (in sec) STACKSIZE 64 # 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 workerthreads ON_RECVRY_THREADS 1 # Default number of online workerthreads # 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 /u/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)CDR_LOGDELTA 30 # % of log space allowed in queue memory CDR_NUMCONNECT 400 # Expected connections per server CDR_NIFRETRY 300 # Connection retry (seconds) CDR_NIFCOMPRESS 0 # Link level compression (-1 never, 0 none, 9 max) # 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 # Number of pages to attempt to readahead RA_THRESHOLD # Number of pages left before nextgroup # DBSPACETEMP: # Dynamic Server equivalent of DBTEMP for SE. This is the list of dbspaces # that the Dynamic Server

↪ replying to Bonny
Olmedo Monteverde — — source: Usenet: comp.databases.informix

Hi, You could increase the buffers number. A memory size of 4Gb allows you to do so. In our case, we have 700'000 buffers (2048b each), which means that we almost reached IDS limits of current version (IDS 7.30, soon migrating to 9.40). We also declared strategic tables and indexes as resident in memory, which increased performances. Put attention to tables' extents. That has a major impact on performances as well. HTH, OM "Bonny" <bnyaguwa@okzim.co.zw> a 'crit dans le message de news:699af31f.0312100246.2b806c4@posting.google.com... > I have IDS 7.31 running on HP-UX 11.0 and 4 Gig of memory. > > I have a 40 Gig database with on average 260 users and at peak about > 315 users. > I want to tune my database , as it has shown signs of slowing down > recently. > Checkpoints are taking on average 10 seconds,under normal processing > there should be 6 seconds. > I have posted my onconfig file,onstat -p .What parameters should i > consider for tuning both from the Informix side and Unix side. > > Onconfig > > #************************************************************************** > # > # INFORMIX SOFTWARE, INC. > # > # Title: onconfig.std > # Description: Informix Dynamic Server Configuration Parameters > # > #************************************************************************** > > # Root Dbspace Configuration > > ROOTNAME rootdbs # Root dbspace name > ROOTPATH /dev/rootdbs # Path for device containing root> dbspace > ROOTOFFSET 0 # Offset of root dbspace into device > (Kbytes) > ROOTSIZE 1000000 # 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 rootdbs # Location (dbspace) of physical log > PHYSFILE 250000 # Physical log file size (Kbytes)> > # Logical Log Configuration > > LOGFILES 30 # Number of logical log files > LOGSIZE 5000 # Logical log size (Kbytes)> > # Diagnostics > > MSGPATH /u/informix/online.log # System message log file path > CONSOLE /dev/console # System console message path > ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program path> SYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program > path > TBLSPACE_STATS 0> > # System Archive Tape Device > > TAPEDEV /dev/rmt/c8t3d0BEST # Tape device path > TAPEBLK 6144 # Tape block size (Kbytes) > TAPESIZE 80000000 # Maximum amount of data to put on > tape (Kbytes)> > # Log Archive Tape Device > > LTAPEDEV /dev/rmt/1m # Log tape device pat > LTAPEBLK 1024 # 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 1 # Unique id corresponding to a Dynamic> Server instance > DBSERVERNAME ok_srvr # Name of default database server > DBSERVERALIASES ok_tcp # List of alternate dbservernames > NETTYPE ipcshm,1,500,CPU # Configure poll thread(s) for> nettype > NETTYPE soctcp,1,5,NET # 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 2 # 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 400000 # Maximum number of locks > BUFFERS 200000 # Maximum number of shared buffers > NUMAIOVPS 8 # Number of IO vps > PHYSBUFF 128 # Physical log buffer size (Kbytes) > LOGBUFF 128 # Logical log buffer size (Kbytes)> LOGSMAX 100 # Maximum number of logical log files > CLEANERS 127 # Number of buffer cleaner processes > SHMBASE 0x0 # Shared memory base address > SHMVIRTSIZE 300000 # initial virtual shared memory> segment size > SHMADD 40000 # Size of new shared memory segments > (Kbytes) > SHMTOTAL 0 # Total shared memory (Kbytes). > 0=>unlimited > CKPTINTVL 360 # 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 64 # 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 1 # 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 /u/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)> CDR_LOGDELTA 30 # % of log space allowed in queue > memory > CDR_NUMCONNECT 400 # Expected connections per server > CDR_NIFRETRY 30

↪ replying to Bonny
Andy Kent — — source: Usenet: comp.databases.informix

Always, ALWAYS start performance tuning by looking at the SQL and how the optimiser is running it. Andy bnyaguwa@okzim.co.zw (Bonny) wrote in message news:<699af31f.0312100246.2b806c4@posting.google.com>... > I have IDS 7.31 running on HP-UX 11.0 and 4 Gig of memory. > > I have a 40 Gig database with on average 260 users and at peak about > 315 users. > I want to tune my database , as it has shown signs of slowing down > recently. > Checkpoints are taking on average 10 seconds,under normal processing > there should be 6 seconds. > I have posted my onconfig file,onstat -p .What parameters should i > consider for tuning both from the Informix side and Unix side. > > Onconfig > > #************************************************************************** > # > # INFORMIX SOFTWARE, INC. > # > # Title: onconfig.std > # Description: Informix Dynamic Server Configuration Parameters > # > #************************************************************************** > > # Root Dbspace Configuration > > ROOTNAME rootdbs # Root dbspace name > ROOTPATH /dev/rootdbs # Path for device containing root> dbspace > ROOTOFFSET 0 # Offset of root dbspace into device > (Kbytes) > ROOTSIZE 1000000 # 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 rootdbs # Location (dbspace) of physical log > PHYSFILE 250000 # Physical log file size (Kbytes)> > # Logical Log Configuration > > LOGFILES 30 # Number of logical log files > LOGSIZE 5000 # Logical log size (Kbytes)> > # Diagnostics > > MSGPATH /u/informix/online.log # System message log file path > CONSOLE /dev/console # System console message path > ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program path> SYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program > path > TBLSPACE_STATS 0> > # System Archive Tape Device > > TAPEDEV /dev/rmt/c8t3d0BEST # Tape device path > TAPEBLK 6144 # Tape block size (Kbytes) > TAPESIZE 80000000 # Maximum amount of data to put on > tape (Kbytes)> > # Log Archive Tape Device > > LTAPEDEV /dev/rmt/1m # Log tape device pat > LTAPEBLK 1024 # 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 1 # Unique id corresponding to a Dynamic> Server instance > DBSERVERNAME ok_srvr # Name of default database server > DBSERVERALIASES ok_tcp # List of alternate dbservernames > NETTYPE ipcshm,1,500,CPU # Configure poll thread(s) for> nettype > NETTYPE soctcp,1,5,NET # 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 2 # 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 400000 # Maximum number of locks > BUFFERS 200000 # Maximum number of shared buffers > NUMAIOVPS 8 # Number of IO vps > PHYSBUFF 128 # Physical log buffer size (Kbytes) > LOGBUFF 128 # Logical log buffer size (Kbytes)> LOGSMAX 100 # Maximum number of logical log files > CLEANERS 127 # Number of buffer cleaner processes > SHMBASE 0x0 # Shared memory base address > SHMVIRTSIZE 300000 # initial virtual shared memory> segment size > SHMADD 40000 # Size of new shared memory segments > (Kbytes) > SHMTOTAL 0 # Total shared memory (Kbytes). > 0=>unlimited > CKPTINTVL 360 # 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 64 # 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 1 # 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 /u/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)> CDR_LOGDELTA 30 # % of log space allowed in queue > memory > CDR_NUMCONNECT 400 # Expected connections per server > CDR_NIFRETRY 300 # Connection retry (seconds) > CDR_NIFCOMPRESS 0 # Link level compression (-1 never, 0 > none, 9 max)> > # 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@@

↪ replying to Andy Kent
Paul Watson — — source: Usenet: comp.databases.informix

I'd disagree, I always start at the Unix config and work back to the SQL. Highly tuned SQL with a poor engfine config on poorly setup server will always be slow. Andy Kent wrote: > > Always, ALWAYS start performance tuning by looking at the SQL and how > the optimiser is running it. > > Andy > > bnyaguwa@okzim.co.zw (Bonny) wrote in message news:<699af31f.0312100246.2b806c4@posting.google.com>... > > I have IDS 7.31 running on HP-UX 11.0 and 4 Gig of memory. > > > > I have a 40 Gig database with on average 260 users and at peak about > > 315 users. > > I want to tune my database , as it has shown signs of slowing down > > recently. > > Checkpoints are taking on average 10 seconds,under normal processing > > there should be 6 seconds. > > I have posted my onconfig file,onstat -p .What parameters should i > > consider for tuning both from the Informix side and Unix side. > > > > Onconfig > > > > #************************************************************************** > > # > > # INFORMIX SOFTWARE, INC. > > # > > # Title: onconfig.std > > # Description: Informix Dynamic Server Configuration Parameters > > # > > #************************************************************************** > > > > # Root Dbspace Configuration > > > > ROOTNAME rootdbs # Root dbspace name > > ROOTPATH /dev/rootdbs # Path for device containing root> > dbspace > > ROOTOFFSET 0 # Offset of root dbspace into device > > (Kbytes) > > ROOTSIZE 1000000 # 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 rootdbs # Location (dbspace) of physical log > > PHYSFILE 250000 # Physical log file size (Kbytes)> > > > # Logical Log Configuration > > > > LOGFILES 30 # Number of logical log files > > LOGSIZE 5000 # Logical log size (Kbytes)> > > > # Diagnostics > > > > MSGPATH /u/informix/online.log # System message log file path > > CONSOLE /dev/console # System console message path > > ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program path> > SYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program > > path > > TBLSPACE_STATS 0> > > > # System Archive Tape Device > > > > TAPEDEV /dev/rmt/c8t3d0BEST # Tape device path > > TAPEBLK 6144 # Tape block size (Kbytes) > > TAPESIZE 80000000 # Maximum amount of data to put on > > tape (Kbytes)> > > > # Log Archive Tape Device > > > > LTAPEDEV /dev/rmt/1m # Log tape device pat > > LTAPEBLK 1024 # 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 1 # Unique id corresponding to a Dynamic> > Server instance > > DBSERVERNAME ok_srvr # Name of default database server > > DBSERVERALIASES ok_tcp # List of alternate dbservernames > > NETTYPE ipcshm,1,500,CPU # Configure poll thread(s) for> > nettype > > NETTYPE soctcp,1,5,NET # 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 2 # 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 400000 # Maximum number of locks > > BUFFERS 200000 # Maximum number of shared buffers > > NUMAIOVPS 8 # Number of IO vps > > PHYSBUFF 128 # Physical log buffer size (Kbytes) > > LOGBUFF 128 # Logical log buffer size (Kbytes)> > LOGSMAX 100 # Maximum number of logical log files > > CLEANERS 127 # Number of buffer cleaner processes > > SHMBASE 0x0 # Shared memory base address > > SHMVIRTSIZE 300000 # initial virtual shared memory> > segment size > > SHMADD 40000 # Size of new shared memory segments > > (Kbytes) > > SHMTOTAL 0 # Total shared memory (Kbytes). > > 0=>unlimited > > CKPTINTVL 360 # 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 64 # 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 1 # 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 /u/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> > queu

↪ replying to Paul Watson
Andy Kent — — source: Usenet: comp.databases.informix

NO! NO! NO! Andy Paul Watson <paul@oninit.com> wrote in message news:<3FD75250.9258A064@oninit.com>... > I'd disagree, I always start at the Unix config and work back to > the SQL. Highly tuned SQL with a poor engfine config on poorly setup > server will always be slow. > > > Andy Kent wrote: > > > > Always, ALWAYS start performance tuning by looking at the SQL and how > > the optimiser is running it. > > > > Andy > > > > bnyaguwa@okzim.co.zw (Bonny) wrote in message news:<699af31f.0312100246.2b806c4@posting.google.com>... > > > I have IDS 7.31 running on HP-UX 11.0 and 4 Gig of memory. > > > > > > I have a 40 Gig database with on average 260 users and at peak about > > > 315 users. > > > I want to tune my database , as it has shown signs of slowing down > > > recently. > > > Checkpoints are taking on average 10 seconds,under normal processing > > > there should be 6 seconds. > > > I have posted my onconfig file,onstat -p .What parameters should i > > > consider for tuning both from the Informix side and Unix side. > > > > > > Onconfig > > > > > > #************************************************************************** > > > # > > > # INFORMIX SOFTWARE, INC. > > > # > > > # Title: onconfig.std > > > # Description: Informix Dynamic Server Configuration Parameters > > > # > > > #************************************************************************** > > > > > > # Root Dbspace Configuration > > > > > > ROOTNAME rootdbs # Root dbspace name > > > ROOTPATH /dev/rootdbs # Path for device containing root> > > dbspace > > > ROOTOFFSET 0 # Offset of root dbspace into device > > > (Kbytes) > > > ROOTSIZE 1000000 # 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 rootdbs # Location (dbspace) of physical log > > > PHYSFILE 250000 # Physical log file size (Kbytes)> > > > > > # Logical Log Configuration > > > > > > LOGFILES 30 # Number of logical log files > > > LOGSIZE 5000 # Logical log size (Kbytes)> > > > > > # Diagnostics > > > > > > MSGPATH /u/informix/online.log # System message log file path > > > CONSOLE /dev/console # System console message path > > > ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program path> > > SYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program > > > path > > > TBLSPACE_STATS 0> > > > > > # System Archive Tape Device > > > > > > TAPEDEV /dev/rmt/c8t3d0BEST # Tape device path > > > TAPEBLK 6144 # Tape block size (Kbytes) > > > TAPESIZE 80000000 # Maximum amount of data to put on > > > tape (Kbytes)> > > > > > # Log Archive Tape Device > > > > > > LTAPEDEV /dev/rmt/1m # Log tape device pat > > > LTAPEBLK 1024 # 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 1 # Unique id corresponding to a Dynamic> > > Server instance > > > DBSERVERNAME ok_srvr # Name of default database server > > > DBSERVERALIASES ok_tcp # List of alternate dbservernames > > > NETTYPE ipcshm,1,500,CPU # Configure poll thread(s) for> > > nettype > > > NETTYPE soctcp,1,5,NET # 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 2 # 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 400000 # Maximum number of locks > > > BUFFERS 200000 # Maximum number of shared buffers > > > NUMAIOVPS 8 # Number of IO vps > > > PHYSBUFF 128 # Physical log buffer size (Kbytes) > > > LOGBUFF 128 # Logical log buffer size (Kbytes)> > > LOGSMAX 100 # Maximum number of logical log files > > > CLEANERS 127 # Number of buffer cleaner processes > > > SHMBASE 0x0 # Shared memory base address > > > SHMVIRTSIZE 300000 # initial virtual shared memory> > > segment size > > > SHMADD 40000 # Size of new shared memory segments > > > (Kbytes) > > > SHMTOTAL 0 # Total shared memory (Kbytes). > > > 0=>unlimited > > > CKPTINTVL 360 # 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 64 # 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 1 # 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 se

↪ replying to Paul Watson
Andy Kent — — source: Usenet: comp.databases.informix

NO! NO! NO! Andy Paul Watson <paul@oninit.com> wrote in message news:<3FD75250.9258A064@oninit.com>... > I'd disagree, I always start at the Unix config and work back to > the SQL. Highly tuned SQL with a poor engfine config on poorly setup > server will always be slow. > > > Andy Kent wrote: > > > > Always, ALWAYS start performance tuning by looking at the SQL and how > > the optimiser is running it. > > > > Andy > > > > bnyaguwa@okzim.co.zw (Bonny) wrote in message news:<699af31f.0312100246.2b806c4@posting.google.com>... > > > I have IDS 7.31 running on HP-UX 11.0 and 4 Gig of memory. > > > > > > I have a 40 Gig database with on average 260 users and at peak about > > > 315 users. > > > I want to tune my database , as it has shown signs of slowing down > > > recently. > > > Checkpoints are taking on average 10 seconds,under normal processing > > > there should be 6 seconds. > > > I have posted my onconfig file,onstat -p .What parameters should i > > > consider for tuning both from the Informix side and Unix side. > > > > > > Onconfig > > > > > > #************************************************************************** > > > # > > > # INFORMIX SOFTWARE, INC. > > > # > > > # Title: onconfig.std > > > # Description: Informix Dynamic Server Configuration Parameters > > > # > > > #************************************************************************** > > > > > > # Root Dbspace Configuration > > > > > > ROOTNAME rootdbs # Root dbspace name > > > ROOTPATH /dev/rootdbs # Path for device containing root> > > dbspace > > > ROOTOFFSET 0 # Offset of root dbspace into device > > > (Kbytes) > > > ROOTSIZE 1000000 # 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 rootdbs # Location (dbspace) of physical log > > > PHYSFILE 250000 # Physical log file size (Kbytes)> > > > > > # Logical Log Configuration > > > > > > LOGFILES 30 # Number of logical log files > > > LOGSIZE 5000 # Logical log size (Kbytes)> > > > > > # Diagnostics > > > > > > MSGPATH /u/informix/online.log # System message log file path > > > CONSOLE /dev/console # System console message path > > > ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program path> > > SYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program > > > path > > > TBLSPACE_STATS 0> > > > > > # System Archive Tape Device > > > > > > TAPEDEV /dev/rmt/c8t3d0BEST # Tape device path > > > TAPEBLK 6144 # Tape block size (Kbytes) > > > TAPESIZE 80000000 # Maximum amount of data to put on > > > tape (Kbytes)> > > > > > # Log Archive Tape Device > > > > > > LTAPEDEV /dev/rmt/1m # Log tape device pat > > > LTAPEBLK 1024 # 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 1 # Unique id corresponding to a Dynamic> > > Server instance > > > DBSERVERNAME ok_srvr # Name of default database server > > > DBSERVERALIASES ok_tcp # List of alternate dbservernames > > > NETTYPE ipcshm,1,500,CPU # Configure poll thread(s) for> > > nettype > > > NETTYPE soctcp,1,5,NET # 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 2 # 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 400000 # Maximum number of locks > > > BUFFERS 200000 # Maximum number of shared buffers > > > NUMAIOVPS 8 # Number of IO vps > > > PHYSBUFF 128 # Physical log buffer size (Kbytes) > > > LOGBUFF 128 # Logical log buffer size (Kbytes)> > > LOGSMAX 100 # Maximum number of logical log files > > > CLEANERS 127 # Number of buffer cleaner processes > > > SHMBASE 0x0 # Shared memory base address > > > SHMVIRTSIZE 300000 # initial virtual shared memory> > > segment size > > > SHMADD 40000 # Size of new shared memory segments > > > (Kbytes) > > > SHMTOTAL 0 # Total shared memory (Kbytes). > > > 0=>unlimited > > > CKPTINTVL 360 # 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 64 # 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 1 # 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 se

↪ replying to Paul Watson
Andy Kent — — source: Usenet: comp.databases.informix

If you follow that logic you'll end up tuning the box to support a 1,000,000 row sequential scan that should have been achievable through an index lookup. The reality is usually more complex and more grotesque than that example. Probably the most authoritative and comprehensive performance tuning book you can buy (sadly based on A.N. Other database) devotes about 75% of its content to SQL, indexing and optimisation. Admittedly he's talking about checkpoints and therefore write activity, but the principle's still the same - all those writes could be caused by unnecessary temp table generation. Andy Paul Watson <paul@oninit.com> wrote in message news:<3FD75250.9258A064@oninit.com>... > I'd disagree, I always start at the Unix config and work back to > the SQL. Highly tuned SQL with a poor engfine config on poorly setup > server will always be slow. > > > Andy Kent wrote: > > > > Always, ALWAYS start performance tuning by looking at the SQL and how > > the optimiser is running it. > > > > Andy > > > > bnyaguwa@okzim.co.zw (Bonny) wrote in message news:<699af31f.0312100246.2b806c4@posting.google.com>... > > > I have IDS 7.31 running on HP-UX 11.0 and 4 Gig of memory. > > > > > > I have a 40 Gig database with on average 260 users and at peak about > > > 315 users. > > > I want to tune my database , as it has shown signs of slowing down > > > recently. > > > Checkpoints are taking on average 10 seconds,under normal processing > > > there should be 6 seconds. > > > I have posted my onconfig file,onstat -p .What parameters should i > > > consider for tuning both from the Informix side and Unix side. > > > > > > Onconfig > > > > > > #************************************************************************** > > > # > > > # INFORMIX SOFTWARE, INC. > > > # > > > # Title: onconfig.std > > > # Description: Informix Dynamic Server Configuration Parameters > > > # > > > #************************************************************************** > > > > > > # Root Dbspace Configuration > > > > > > ROOTNAME rootdbs # Root dbspace name > > > ROOTPATH /dev/rootdbs # Path for device containing root> > > dbspace > > > ROOTOFFSET 0 # Offset of root dbspace into device > > > (Kbytes) > > > ROOTSIZE 1000000 # 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 rootdbs # Location (dbspace) of physical log > > > PHYSFILE 250000 # Physical log file size (Kbytes)> > > > > > # Logical Log Configuration > > > > > > LOGFILES 30 # Number of logical log files > > > LOGSIZE 5000 # Logical log size (Kbytes)> > > > > > # Diagnostics > > > > > > MSGPATH /u/informix/online.log # System message log file path > > > CONSOLE /dev/console # System console message path > > > ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program path> > > SYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program > > > path > > > TBLSPACE_STATS 0> > > > > > # System Archive Tape Device > > > > > > TAPEDEV /dev/rmt/c8t3d0BEST # Tape device path > > > TAPEBLK 6144 # Tape block size (Kbytes) > > > TAPESIZE 80000000 # Maximum amount of data to put on > > > tape (Kbytes)> > > > > > # Log Archive Tape Device > > > > > > LTAPEDEV /dev/rmt/1m # Log tape device pat > > > LTAPEBLK 1024 # 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 1 # Unique id corresponding to a Dynamic> > > Server instance > > > DBSERVERNAME ok_srvr # Name of default database server > > > DBSERVERALIASES ok_tcp # List of alternate dbservernames > > > NETTYPE ipcshm,1,500,CPU # Configure poll thread(s) for> > > nettype > > > NETTYPE soctcp,1,5,NET # 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 2 # 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 400000 # Maximum number of locks > > > BUFFERS 200000 # Maximum number of shared buffers > > > NUMAIOVPS 8 # Number of IO vps > > > PHYSBUFF 128 # Physical log buffer size (Kbytes) > > > LOGBUFF 128 # Logical log buffer size (Kbytes)> > > LOGSMAX 100 # Maximum number of logical log files > > > CLEANERS 127 # Number of buffer cleaner processes > > > SHMBASE 0x0 # Shared memory base address > > > SHMVIRTSIZE 300000 # initial virtual shared memory> > > segment size > > > SHMADD 40000 # Size of new shared memory segments > > > (Kbytes) > > > SHMTOTAL 0 # Total shared memory (Kbytes). > > > 0=>unlimited > > > CKPTINTVL 360 # 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 64 # 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. > > > #

↪ replying to Bonny
Nebojsa Sevo — — source: Usenet: comp.databases.informix

It is "out of topic" but set: LBU_PRESERVE 1 nebojsa On 10 Dec 2003 02:46:37 -0800, bnyaguwa@okzim.co.zw (Bonny) wrote: >I have IDS 7.31 running on HP-UX 11.0 and 4 Gig of memory. > >I have a 40 Gig database with on average 260 users and at peak about >315 users. >I want to tune my database , as it has shown signs of slowing down >recently. >Checkpoints are taking on average 10 seconds,under normal processing >there should be 6 seconds. >I have posted my onconfig file,onstat -p .What parameters should i >consider for tuning both from the Informix side and Unix side. > >Onconfig > >#************************************************************************** ># ># INFORMIX SOFTWARE, INC. ># ># Title: onconfig.std ># Description: Informix Dynamic Server Configuration Parameters ># >#************************************************************************** > ># Root Dbspace Configuration > >ROOTNAME rootdbs # Root dbspace name >ROOTPATH /dev/rootdbs # Path for device containing root>dbspace >ROOTOFFSET 0 # Offset of root dbspace into device >(Kbytes) >ROOTSIZE 1000000 # 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 rootdbs # Location (dbspace) of physical log >PHYSFILE 250000 # Physical log file size (Kbytes)> ># Logical Log Configuration > >LOGFILES 30 # Number of logical log files >LOGSIZE 5000 # Logical log size (Kbytes)> ># Diagnostics > >MSGPATH /u/informix/online.log # System message log file path >CONSOLE /dev/console # System console message path >ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program path>SYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program >path >TBLSPACE_STATS 0> ># System Archive Tape Device > >TAPEDEV /dev/rmt/c8t3d0BEST # Tape device path >TAPEBLK 6144 # Tape block size (Kbytes) >TAPESIZE 80000000 # Maximum amount of data to put on >tape (Kbytes)> ># Log Archive Tape Device > >LTAPEDEV /dev/rmt/1m # Log tape device pat >LTAPEBLK 1024 # 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 1 # Unique id corresponding to a Dynamic>Server instance >DBSERVERNAME ok_srvr # Name of default database server >DBSERVERALIASES ok_tcp # List of alternate dbservernames >NETTYPE ipcshm,1,500,CPU # Configure poll thread(s) for>nettype >NETTYPE soctcp,1,5,NET # 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 2 # 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 400000 # Maximum number of locks >BUFFERS 200000 # Maximum number of shared buffers >NUMAIOVPS 8 # Number of IO vps >PHYSBUFF 128 # Physical log buffer size (Kbytes) >LOGBUFF 128 # Logical log buffer size (Kbytes)>LOGSMAX 100 # Maximum number of logical log files >CLEANERS 127 # Number of buffer cleaner processes >SHMBASE 0x0 # Shared memory base address >SHMVIRTSIZE 300000 # initial virtual shared memory>segment size >SHMADD 40000 # Size of new shared memory segments >(Kbytes) >SHMTOTAL 0 # Total shared memory (Kbytes). >0=>unlimited >CKPTINTVL 360 # 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 64 # 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 1 # 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 /u/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)>CDR_LOGDELTA 30 # % of log space allowed in queue >memory >CDR_NUMCONNECT 400 # Expected connections per server >CDR_NIFRETRY 300 # Connection retry (seconds) >CDR_NIFCOMPRESS 0 # Link level compression (-1 never, 0 >none, 9 max)> ># 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

Related threads

Glossary