topic Memory not released in Operating System - Linux

Memory not released

AnthonySN — Tue, 04 Mar 2008 14:57:18 GMT

Server DL580 g4
ram 8gb
swap 8 gb
hdd 4*146gb

When any application is run the swap memory shows 50% utilization and doesn't release it after the application is stopped.

Re: Memory not released

Ivan Ferreira — Tue, 04 Mar 2008 15:02:10 GMT

That is an application bug and not an O.S. problem. What is the application? Is correctly stopped?

Re: Memory not released

skt_skt — Tue, 04 Mar 2008 18:35:31 GMT

could you see any difference in "ipcs -a" before and after..

Re: Memory not released

AnthonySN — Wed, 05 Mar 2008 04:47:12 GMT

application can be any, like if we take backup thru DP6 it not release the memory after backup.
IBM WAS 6.0.1 is running on the server.

Re: Memory not released

Vitaly Karasik_1 — Wed, 05 Mar 2008 08:00:31 GMT

what is your baseline?
I mean, what is "free" output before you start any application?
and after your application is started?

Re: Memory not released

AnthonySN — Wed, 05 Mar 2008 08:59:37 GMT

Before 10% utilized
after backup 50 %
but the strange thing is tar backup goes off smoothly without locking memory.

Re: Memory not released

Vitaly Karasik_1 — Wed, 05 Mar 2008 09:41:51 GMT

can you provide "top" output sorted by memory usage - before, during and after running your backup?