[Devel] Re: [RFC] [PATCH] Cgroup based OOM killer controller

[Evgeniy Polyakov]

On Tue, Jan 27, 2009 at 12:41:03PM -0800, David Rientjes (rientjes at google.com) wrote:
> > Having some special application which will monitor /dev/mem_notify and
> > kill processes based on its own hueristics is a good idea, but when it
> > fails to do its work (or does not exist) system has to have ability to
> > make a progress and invoke a main oom-killer.
> 
> Agreed, very similiar to the cgroup oom notifier patch that invokes the 
> oom killer if there are no attached tasks waiting to handle the situation. 
> 
> In this case, it would be a configurable delay to allow userspace to act 
> in response to oom conditions before invoking the kernel oom killer.  So 
> instead of thinking of this as a userspace replacement for the oom killer, 
> it simply preempts it if userspace can provide more memory, including the 
> possibility of killing tasks itself.

How different may look idea expressed by the different phrases and cold
heads :)

-- 
	Evgeniy Polyakov
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