Re: oom with 2.6.11

[Mauricio Lin]

Hi Christian,

Could you check the mm/oom_kill.c for your kernel 2.6.11-rc3?

During the 2.6.11-rc development, the oom killer was changed by Andrea
Arcangeli. I do not remember exactly which was the version that this
modification was included, perhaps in kernel 2.6.11-rc4.

Now this oom killer modification is part of 2.6.11 vanilla kernel.

Send the mm/oom_kill.c of 2.6.11-rc3 to me, please. Let me confirm my doubt.

BR,

Mauricio Lin. 

On Tue, 08 Mar 2005 16:21:21 +0100, Christian Kujau <evil@xxxxxxxxxx> wrote:
> hallo list,
> 
> today my machine went out out memory and noticing it several hours after
> the first OOM message in the log, i wonder
>    1) why this happened at all and
>    2) why almost every service was killed despite the clever algorithms
>       documented in mm/oom_kill.c.
> 
> the first oom message went to the syslog at 01:27, i was away and no heavy
> tasks were scheduled:
> 
> http://nerdbynature.de/bits/sheep/2.6.11/oom/oom_2.6.11.txt
> 
> mysqld got killed by the oom killer, so i have to suspect mysql for being
> the reason for oom here, even that i know that mysqld is running all day
> long. several other tasks got killed, but "Free swap" stays at 0kB and the
> oom killer kills almost every other tasks, with no success in freeing ram.
> 
> the log stops at 03:21, perhaps syslog-ng got killed.
> at around 07:31 i noticed the mess, did SYSRQ-E and now i was able to
> login again. i pressed SYSRQ-M/T/P too, they are all in the log. at this
> time loadavg was at 249 ;)
> 
> i went to runlevel 2, then up again to 3 and all services are up and
> running again.
> 
> some 2.6.11-rc3 BK snapshot was running pretty stable (no OOM) for ~30
> days before i switched to 2.6.11 (vanilla) a few days ago. i have to (not)
> reproduce the problem the next night, i wonder if it will happen again.
> 
> do you vm-gurus have any idea to the points asked above?
> 
> more infos about the box here: http://nerdbynature.de/bits/sheep/2.6.11/oom/
> 
> thank you for your comments,
> Christian.
> --
> BOFH excuse #281:
> 
> The co-locator cannot verify the frame-relay gateway to the ISDN server.
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