[dicipulofer]

Hello...

I'm worried with one problem...

My server's showing one message to me "Out of memory" and. when this happen, all database stop for somes seconds..


I wait somes seconds, and all turn normal...


I don't know what I do to discover what's happening with my database....

Someone have a idea to me check what's wrong ?

[dicipulofer]

I'm thinking it's problem due low swap memory...


total used free shared buffers cached
Mem: 2016 2001 15 0 5 970
-/+ buffers/cache: 1024 991
Swap: 2000 1513 150


when my server got close 100 free, the application stop !!


When the value increase to 400 free (swap value).... the server stay stable...

Att,
Fernando.

[ceinma]

what version of your IDS?
What OS?
How much of Physical Memory you have in this machine?
How much of shared+resident memory config your IDS?
Do you have another heavy services running ?
Do you set the RESIDENT option on ONCONFIG?

Some commands, if your OS is Linux:
vmstat
swapon -s ## show status
swapoff -a ## disable swap
sar -r 1 1000
free
study about kernel parameters: /proc/sys/vm/*
man -S 5 proc

[dicipulofer]

IBM Informix Dynamic Server Version 9.40.UC3
Red Hat Enterprise
2 GB


# Shared Memory Parameters

LOCKS 2000 # Maximum number of locks
BUFFERS 5000 # Maximum number of shared buffers
NUMAIOVPS # Number of IO vps
PHYSBUFF 32 # Physical log buffer size (Kbytes)
LOGBUFF 32 # Logical log buffer size (Kbytes)
CLEANERS 1 # Number of buffer cleaner processes
SHMBASE 0x44000000L # 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
TXTIMEOUT 300 # Transaction timeout (in sec)
STACKSIZE 32


And.. I no have RESIDENT configured in my onconfig (is 0)


and no have other heavy application in this machine....

What do u think ?

[ceinma]

This is a very strange!!!
Your sure don't have another application??

my suggestion to start:
- monitor your linux with command "top" to see what application are using more memory/cpu (press "h" to see the help, i don't remember now but have a option to order by memory utilization)
- check how much your IDS is using of memory :
onstat -
onstat -g seg

[dicipulofer]

I added more swap memory.. and the problem was "solved.."


now.. I need to find.. what process's taking a lot memory.. and using swap..



thanks for all
Fernando