From: David Rientjes <rientjes@google.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Nick Piggin <npiggin@suse.de>, Oleg Nesterov <oleg@redhat.com>,
Balbir Singh <balbir@in.ibm.com>,
linux-mm@kvack.org
Subject: Re: [patch -mm 1/2] oom: badness heuristic rewrite
Date: Mon, 2 Aug 2010 18:52:40 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1008021850400.19184@chino.kir.corp.google.com> (raw)
In-Reply-To: <20100803102423.82415a17.kamezawa.hiroyu@jp.fujitsu.com>
On Tue, 3 Aug 2010, KAMEZAWA Hiroyuki wrote:
> > Hmm, then, oom_score shows the values for all limitations in array ?
> >
> Anyway, the fact "oom_score can be changed by the context of OOM" may
> confuse admins. "OMG, why low oom_score application is killed! Shit!"
>
> Please add additional cares for users if we go this way or remove
> user visible oom_score file from /proc.
>
Sure, a task could be killed with a very low /proc/pid/oom_score, but only
if its cpuset is oom, for example, and it has the highest score of all
tasks attached to that oom_score. So /proc/pid/oom_score needs to be
considered in the context in which the oom occurs: system-wide, cpuset,
mempolicy, or memcg. That's unchanged from the old oom killer.
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next prev parent reply other threads:[~2010-08-03 1:49 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-17 19:16 David Rientjes
2010-07-17 19:16 ` [patch -mm 2/2] oom: deprecate oom_adj tunable David Rientjes
2010-07-29 23:08 ` [patch -mm 1/2] oom: badness heuristic rewrite Andrew Morton
2010-07-30 0:12 ` KOSAKI Motohiro
2010-07-30 1:38 ` Andrew Morton
2010-07-30 11:02 ` KOSAKI Motohiro
2010-07-30 20:14 ` David Rientjes
2010-08-02 20:43 ` Andrew Morton
2010-08-03 0:00 ` KAMEZAWA Hiroyuki
2010-08-03 0:27 ` David Rientjes
2010-08-03 0:36 ` KAMEZAWA Hiroyuki
2010-08-03 1:02 ` David Rientjes
2010-08-03 1:08 ` KAMEZAWA Hiroyuki
2010-08-03 1:24 ` KAMEZAWA Hiroyuki
2010-08-03 1:52 ` David Rientjes [this message]
2010-08-03 2:05 ` KAMEZAWA Hiroyuki
2010-08-03 3:05 ` David Rientjes
2010-08-03 3:11 ` KAMEZAWA Hiroyuki
2010-08-03 4:20 ` David Rientjes
2010-08-03 4:32 ` KAMEZAWA Hiroyuki
2010-08-03 7:23 ` David Rientjes
2010-08-03 7:21 ` KAMEZAWA Hiroyuki
2010-08-03 7:27 ` KAMEZAWA Hiroyuki
2010-08-03 20:43 ` David Rientjes
2010-08-03 1:50 ` David Rientjes
2010-08-03 1:50 ` KAMEZAWA Hiroyuki
2010-08-03 6:00 ` KOSAKI Motohiro
2010-08-03 7:16 ` David Rientjes
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