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IDS Forum

Application slow and data not saved

Posted By: MUMIN MARJUKI
Date: Tuesday, 10 November 2009, at 9:28 p.m.

Hi,

I have IDS v7.30.UC7 running on Solaris 2.6 with 1024Mb RAM and 1 CPU 400Mhz .
There is 2 application db at this IDS. The problem is application will running slow and sometime data cannot be saved when more user used this application. This application already running about 8 years and now it become slow..

this is onstat -p output :

Informix Dynamic Server Version 7.30.UC7 -- On-Line -- Up 2 days 00:14:22 -- 50688 Kbytes

Profile
dskreads pagreads bufreads %cached dskwrits pagwrits bufwrits %cached
30945890 4485340 140820758 78.02 63142 251189 609906 89.65

isamtot open start read write rewrite delete commit rollbk
4122988 338018 649682 1248899 81844 10734 911 4852 918

gp_read gp_write gp_rewrt gp_del gp_alloc gp_free gp_curs
0 0 0 0 0 0 0

ovlock ovuserthread ovbuff usercpu syscpu numckpts flushes
0 0 0 39755.92 1429.96 529 1158

bufwaits lokwaits lockreqs deadlks dltouts ckpwaits compress seqscans
7385086 711 3337555672 188 0 57 2095 42989

ixda-RA idx-RA da-RA RA-pgsused lchwaits
145303 1137 29458137 29599384 0

and this is my onconfig file :

Informix Dynamic Server Version 7.30.UC7 -- On-Line -- Up 2 days 00:15:09 -- 50688 Kbytes

Configuration File: /home1/informix/etc/onconfig.spplbp
#**************************************************************************
#
# INFORMIX SOFTWARE, INC.
#
# Title: onconfig.std
# Description: INFORMIX-OnLine Configuration Parameters
#
#**************************************************************************

# Root Dbspace Configuration

ROOTNAME rootdbs # Root dbspace name
ROOTPATH /home1/dataspace/rootchunk

# Path for device containing root dbspace
ROOTOFFSET 1024 # Offset of root dbspace into device (Kbytes)
ROOTSIZE 2000000 # 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 10000 # Physical log file size (Kbytes)

# Logical Log Configuration

LOGFILES 20 # Number of logical log files
LOGSIZE 20000 # Logical log size (Kbytes)

# Diagnostics

MSGPATH /home1/informix/online.log # System message log file path
CONSOLE /dev/console # System console message path
ALARMPROGRAM /home1/informix/etc/no_log.sh # Alarm program path

# System Archive Tape Device

TAPEDEV /dev/rst4 # Tape device path
TAPEBLK 16 # Tape block size (Kbytes)
TAPESIZE 12000000 # Maximum amount of data to put on tape (Kbytes)
#TAPESIZE 2097152 # Maximum amount of data to put on tape (Kbytes)

# Log Archive Tape Device

LTAPEDEV /dev/rst5 # Log tape device path
LTAPEBLK 16 # Log tape block size (Kbytes)
LTAPESIZE 12000000 # Max amount of data to put on log tape (Kbytes)

# Optical

STAGEBLOB # INFORMIX-OnLine/Optical staging area

# System Configuration

SERVERNUM 1 # Unique id corresponding to a OnLine instance
DBSERVERNAME online_spplbp # Name of default database server
DBSERVERALIASES # List of alternate dbservernames
NETTYPE tlitcp,1,200,CPU # Override sqlhosts nettype parameters
#NETTYPE ipcshm,1,200,CPU # Override sqlhosts nettype parameters
DEADLOCK_TIMEOUT 60 # Max time to wait of lock in distributed env.
RESIDENT 0 # Forced residency flag (Yes = 1, No = 0)

MULTIPROCESSOR 0 # 0 for single-processor, 1 for multi-processor
NUMCPUVPS 1 # Number of user (cpu) vps
SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vps to one

NOAGE 0 # Process aging
AFF_SPROC 0 # Affinity start processor
AFF_NPROCS 0 # Affinity number of processors

# Shared Memory Parameters

LOCKS 10000 # Maximum number of locks
BUFFERS 8000 # Maximum number of shared buffers
NUMAIOVPS 4 # Number of IO vps
PHYSBUFF 128 # Physical log buffer size (Kbytes)
LOGBUFF 64 # Logical log buffer size (Kbytes)
LOGSMAX 40 # Maximum number of logical log files
CLEANERS 4 # Number of buffer cleaner processes
SHMBASE 0xa000000 # Shared memory base address
SHMVIRTSIZE 8000 # initial virtual shared memory segment size
SHMADD 8192 # Size of new shared memory segments (Kbytes)
SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited
CKPTINTVL 300 # Check point interval (in sec)
LRUS 8 # Number of LRU queues
LRU_MAX_DIRTY 60 # LRU percent dirty begin cleaning limit
LRU_MIN_DIRTY 50 # 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 32 # Stack size (Kbytes)

# System Page Size
# BUFFSIZE - OnLine no longer supports this configuration parameter.
# To determine the page size used by OnLine 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 /home1/informix/dr.lostfound # DR lost+found file path

# Read Ahead Variables
RA_PAGES # Number of pages to attempt to read ahead
RA_THRESHOLD # Number of pages left before next group

# DBSPACETEMP:
# OnLine equivalent of DBTEMP for SE. This is the list of dbspaces
# that the OnLine SQL Engine will use to create temp tables etc.
# If specified it must be a colon separated list of dbspaces that exist
# when the OnLine system is brought online. If not specified, or if
# all dbspaces specified are invalid, various ad hoc queries will create
# temporary files in /tmp instead.

DBSPACETEMP tempchunk1 # Default temp dbspaces

# DUMP*:
# The following parameters control the type of diagnostics information which
# is preserved when an unanticipated error condition (assertion failure) occurs
# during OnLine operations.
# For DUMPSHMEM, DUMPGCORE and DUMPCORE 1 means Yes, 0 means No.

DUMPDIR /tmp # Preserve diagnostics in this directory
DUMPSHMEM 1 # Dump a copy of shared memory
DUMPGCORE 0 # Dump a core image using 'gcore'
DUMPCORE 0 # Dump a core image (Warning:this aborts OnLine)
DUMPCNT 1 # Number of shared memory or gcore dumps for

# a single user's session

# ADT*
# The following parameters control the type and level of secure auditing
# present in the OnLine system. By default, ADTMODE is 0 and auditing
# is disabled

FILLFACTOR 90 # Fill factor for building indexes

# method for OnLine to use when determining current time
USEOSTIME 0 # 0: use internal time(fast), 1: get time from OS(slow)

# Parallel Database Queries (pdq)

# OFF => 0, LOW => 1, HIGH => 100
MAX_PDQPRIORITY 100 # Maximum allowed pdqpriority
DS_MAX_QUERIES # Maximum number of decision support queries
DS_TOTAL_MEMORY # Decision support memory (Kbytes)
DS_MAX_SCANS 1048576 # Maximum number of decision support scans
DATASKIP off # List of dbspaces to skip

# OPTCOMPIND
# 0 => Nested loop joins will be preferred (where
# possible) over sortmerge joins and hash joins.
# 1 => If the transaction isolation mode is not
# "repeatable read", optimizer behaves as in (2)
# below. Otherwise it behaves as in (0) above.
# 2 => Use costs regardless of the transaction isolation
# mode. Nested loop joins are not necessarily
# preferred. Optimizer bases its decision purely
# on costs.
OPTCOMPIND 2 # To hint the optimizer

ONDBSPACEDOWN 0 # Dbspace down option: 0 = CONTINUE, 1 = ABORT, 2 = WAIT
LBU_PRESERVE 0 # Preserve last log for log backup
OPCACHEMAX 0 # Maximum optical cache size (Kbytes)
SYSALARMPROGRAM /home1/informix/etc/evidence.sh # System Alarm program path
TBLSPACE_STATS 1
CDR_LOGBUFFERS 2048 # size of log reading buffer pool (Kbytes)
CDR_EVALTHREADS 1,1 # 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)
BAR_ACT_LOG /tmp/bar_act.log
BAR_MAX_BACKUP 4
BAR_RETRY 1
BAR_NB_XPORT_COUNT 10
BAR_XFER_BUF_SIZE 31
ISM_DATA_POOL ISMData # If the data pool name is changed, be sure to
ISM_LOG_POOL ISMLogs
HETERO_COMMIT 0
OPT_GOAL -1
DIRECTIVES 1
RESTARTABLE_RESTORE off

I think bufwaits little bit high at onstat -p.
Does anything wrong with my onconfig file?

thanks

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