Thread (44 messages) 44 messages, 7 authors, 2011-09-27

Re: [PATCH] oom: skip frozen tasks

From: Konstantin Khlebnikov <hidden>
Date: 2011-08-26 09:59:21
Also in: lkml

David Rientjes wrote:
On Fri, 26 Aug 2011, Konstantin Khlebnikov wrote:
quoted
quoted
A much better solution would be to lower the badness score that the oom
killer uses for PF_FROZEN threads so that they aren't considered a
priority for kill unless there's nothing else left to kill.
Anyway, oom killer shouldn't loop endlessly if it see TIF_MEMDIE on frozen
task,
it must go on and try to kill somebody else. We cannot wait for thawing this
task.
Did you read my suggestion?  I quoted it above again for you.  The badness
heuristic would only select those tasks to kill as a last resort in the
hopes they will eventually be thawed and may exit.  Panicking the entire
machine for what could be isolated by a cgroup is insanity.
Maybe just fix this "panic" logic? OOM killer should panic only on global memory shortage.

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