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SubjectRe: weird memory related problems, negative memory usage or fake memory usage?
[Andrea, please read this bugreport ...]

On Mon, 24 Sep 2001, Olivier Sessink wrote:

> after upgrade from 2.4.10pre8 to 2.4.10 I have weird problems,
> Xfree sometimes shows up with 99.9% memory in top (on a box with
> 512 mb), and in ps axl it has 4294989036 in the RSS column. When
> this happens the box starts to kill some processes, starts
> heavily swapping (top reports > 400MB in the cache, but the
> machine is heavily swapping!!!) and is completely unusable.

> Since this makes the machine completely unusable, and since it is not
> happening on 2.4.10pre8 I guess it is a bug ;-)

> PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
> 1262 root 5 -10 50764 -1M 1320 S < 2.7 99.9 0:01 XFree86


It seems Andrea wasn't careful with the merge and
backed out some of the locking wrt mm->rss.

Andrea, you may want to spend some time auditing
your VM like has been done with the other 2.4 VM.

cheers,

Rik
--
IA64: a worthy successor to the i860.

http://www.surriel.com/
http://www.conectiva.com/ http://distro.conectiva.com/



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