linux-kernel - Re: user defined OOM policies

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Message-ID: <alpine.DEB.2.02.1311251730160.27270@chino.kir.corp.google.com>
Date:	Mon, 25 Nov 2013 17:31:28 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Jörn Engel <joern@...fs.org>
cc:	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	Greg Thelen <gthelen@...gle.com>,
	Glauber Costa <glommer@...il.com>,
	Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>,
	Hugh Dickins <hughd@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: user defined OOM policies

On Thu, 21 Nov 2013, Jörn Engel wrote:

> One ancient option I sometime miss was this:
> 	- Kill the biggest process.
> 

That's what both the system and memcg oom killer currently do unless you 
change how "biggest process" is defined with /proc/pid/oom_score_adj.  The 
goal is the kill a single process with the highest rss to avoid having to 
kill many different processes.