linux-kernel - Re: [3.2-rc3] OOM killer doesn't kill the obvious memory hog

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Message-ID: <alpine.DEB.2.00.1112061231320.28251@chino.kir.corp.google.com>
Date:	Tue, 6 Dec 2011 12:31:48 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
cc:	Dave Chinner <david@...morbit.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [3.2-rc3] OOM killer doesn't kill the obvious memory hog

On Fri, 2 Dec 2011, KAMEZAWA Hiroyuki wrote:

> From ed565cbf842e0b30827fba7bfdbc724fe21d9d2d Mon Sep 17 00:00:00 2001
> From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Date: Fri, 2 Dec 2011 14:10:51 +0900
> Subject: [PATCH] oom_score_adj trace point.
> 
> oom_score_adj is set by some daemon and launch tasks ans inherited
> to applications, sometimes unexpectedly.
> 
> This patch is for debugging oom_score_adj inheritance. This
> adds trace points for oom_score_adj inheritance.
> 
>     bash-2501  [002]   448.860197: oom_score_adj_update: task 2501[bash] updates oom_score_adj=-1000
>     bash-2501  [002]   455.678190: oom_score_adj_inherited: new task 2527 inherited oom_score_adj -1000
>     ls-2527  [007]   455.678683: oom_score_task_rename: task 2527[bash] to [ls] oom_score_adj=-1000
>     bash-2501  [007]   461.632103: oom_score_adj_inherited: new task 2528 inherited oom_score_adj -1000
>     bash-2501  [007]   461.632335: oom_score_adj_inherited: new task 2529 inherited oom_score_adj -1000
>     ls-2528  [003]   461.632983: oom_score_task_rename: task 2528[bash] to [ls] oom_score_adj=-1000
>     less-2529  [005]   461.633086: oom_score_task_rename: task 2529[bash] to [less] oom_score_adj=-1000
>     bash-2501  [004]   474.888710: oom_score_adj_update: task 2501[bash] updates oom_score_adj=0
> 
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

Acked-by: David Rientjes <rientjes@...gle.com>

Thanks Kame!
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