what version of your IDS?
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:
swapon -s ## show status
swapoff -a ## disable swap
sar -r 1 1000
study about kernel parameters: /proc/sys/vm/*
man -S 5 proc
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 -g seg