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Date: Fri, 14 Feb 2003 16:39:18 -0800
From: Andrew Morton <akpm@digeo.com>
To: Siim Vahtre <siim@pld.ttu.ee>
Cc: linux-kernel@vger.kernel.org
Subject: Re: swap never cleaned up
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Siim Vahtre <siim@pld.ttu.ee> wrote:
>
> Hi.
> 
> Since moving from 2.5.59 to 2.5.60 I've noticed some strange
> behaviour with swap managment. For some unknown reason the
> swapspace starts to fill up but it will NEVER get freed.
> Hence, it is first time in my life when I actually see swap
> used more than 20M on this computer!

Everything seems OK here, from a quick swap and tmpfs test.

Is it possible that some application is leaking memory, and that
swapoff causes it to be oom-killed?

Take a careful look at the process listing, see if some process is using a
lot of memory.  Also the contents of /proc/meminfo.  And see if you can work
out what operation is causing this.

Thanks.