linux-kernel - Re: [PATCH 2/5] oom: kill younger process first

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Message-ID: <BANLkTineOmdV9wjK-5CmR9YTbMXyR8L7og@mail.gmail.com>
Date:	Mon, 23 May 2011 11:37:00 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, caiqian@...hat.com, rientjes@...gle.com,
	hughd@...gle.com, kamezawa.hiroyu@...fujitsu.com, oleg@...hat.com
Subject: Re: [PATCH 2/5] oom: kill younger process first

2011/5/20 KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>:
> This patch introduces do_each_thread_reverse() and select_bad_process()
> uses it. The benefits are two, 1) oom-killer can kill younger process
> than older if they have a same oom score. Usually younger process is
> less important. 2) younger task often have PF_EXITING because shell
> script makes a lot of short lived processes. Reverse order search can
> detect it faster.
>
> Reported-by: CAI Qian <caiqian@...hat.com>
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@...il.com>


-- 
Kind regards,
Minchan Kim
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