[rhn-users] memory management on RHE3

[Darek Czarkowski]

I have a problem with performance on RHE3 web server. Current Kernel is
2.4.21-27.0.4.ELsmp


Free -m shows:

. total used free shared buffers cached

Mem: 5897 5839 57 0 283 4653

-/+ buffers/cache: 902 4994

Swap: 12001 0 12001


Server is running postgresql-7.3.4, jakarta-tomcat-4.1.31 and java
j2sdk1.4.2_08, apache 2 with mod_jk. There is also small ftp activity.

JVM parameters used are TOMCAT_OPTS="-Xms1640m -Xmx2048m"


When the server is rebooted, output of free shows about 500M used
memory, when tomcat is started up it only takes/commits small amount of
memory.

After a few days however the free output is as above.


I don't know where the rest of the memory is allocated, I am not sure
how to trace what is using it. If you can not answer my questions can
you tell me where can I find resources that would help me to
troubleshoot my problems? 


DarekC