From: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
To: Viktor Rosendahl <viktor.rosendahl@nokia.com>
Cc: linux-mm@kvack.org,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Johannes Weiner <jweiner@redhat.com>,
Michal Hocko <mhocko@suse.cz>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Subject: Re: [PATCH] Enable OOM when moving processes between cgroups?
Date: Thu, 1 Sep 2011 09:13:41 +0900 [thread overview]
Message-ID: <20110901091341.08174b77.nishimura@mxp.nes.nec.co.jp> (raw)
In-Reply-To: <20110831175422.GB21571@redhat.com>
On Wed, 31 Aug 2011 19:54:22 +0200
Johannes Weiner <jweiner@redhat.com> wrote:
> On Wed, Aug 31, 2011 at 08:32:21PM +0300, Viktor Rosendahl wrote:
> > Hello,
> >
> > I wonder if there is a specific reason why the OOM killer hasn't been enabled
> > in the mem_cgroup_do_precharge() function in mm/memcontrol.c ?
> >
> > In my testing (2.6.32 kernel with some backported cgroups patches), it improves
> > the case when there isn't room for the task in the target cgroup.
>
> Tasks are moved directly on behalf of a request from userspace. We
> would much prefer denying that single request than invoking the
> oom-killer on the whole group.
>
I agree. OOM is disabled intentionally at the path.
Thanks,
Daisuke Nishimura.
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next prev parent reply other threads:[~2011-09-01 0:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-31 17:32 Viktor Rosendahl
2011-08-31 17:54 ` Johannes Weiner
2011-09-01 0:02 ` KAMEZAWA Hiroyuki
2011-09-01 0:13 ` Daisuke Nishimura [this message]
2011-09-02 11:34 ` Viktor Rosendahl
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