From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Minchan Kim <minchan.kim@gmail.com>
Cc: kosaki.motohiro@jp.fujitsu.com,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Andrey Vagin <avagin@openvz.org>
Subject: Re: [PATCH] Accelerate OOM killing
Date: Thu, 24 Mar 2011 19:05:30 +0900 (JST) [thread overview]
Message-ID: <20110324190534.5CC9.A69D9226@jp.fujitsu.com> (raw)
In-Reply-To: <1300960353-2596-1-git-send-email-minchan.kim@gmail.com>
> When I test Andrey's problem, I saw the livelock and sysrq-t says
> there are many tasks in cond_resched after try_to_free_pages.
>
> If did_some_progress is false, cond_resched could delay oom killing so
> It might be killing another task.
>
> This patch accelerates oom killing without unnecessary giving CPU
> to another task. It could help avoding unnecessary another task killing
> and livelock situation a litte bit.
>
> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> Cc: Andrey Vagin <avagin@openvz.org>
> Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
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next prev parent reply other threads:[~2011-03-24 10:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-24 9:52 Minchan Kim
2011-03-24 10:05 ` KOSAKI Motohiro [this message]
2011-03-24 21:47 ` David Rientjes
2011-03-24 23:35 ` KAMEZAWA Hiroyuki
2011-03-30 21:36 ` Andrew Morton
2011-03-30 22:54 ` Minchan Kim
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