Re: [patch 1/5] oom: cleanup android low memory killer

From: KOSAKI Motohiro
Date: Thu May 14 2009 - 08:23:44 EST



sorry late responce.

> On Mon, 4 May 2009, Rik van Riel wrote:
>
> > > There was an interest in a low mem userspace notifier that applications can
> > > poll() on at configurable low mem levels to react accordingly. This would
> > > probably address the problem that the Android team is trying to fix.
> >
> > This would also make it easier for virtual machines to be
> > ballooned down to size when the host experiences memory
> > pressure.
> >
> > The low memory notification could also be useful for JVMs,
> > databases that do (some of) their own caching and any garbage
> > collected program in general.
> >
>
> I agree, and I'd suggest that it be implemented as a cgroup so that
> individual sets of tasks can be responsible for their own lowmem
> notifiers.
>
> KOSAKI, you were pushing the /dev/mem_notify patchset last year from
> Marcelo. Do you have any plans of recreating that in a cgroup or have you
> dropped it?

sorry, I've pending this because I think I have to stabilize VM
as top priority.

I can't say when I resume this works, sorry.



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