linux-kernel - Re: Memory overcommit

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Date:	Thu, 29 Oct 2009 12:11:29 +0100
From:	Vedran Furač <vedran.furac@...il.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	minchan.kim@...il.com, Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>
Subject: Re: Memory overcommit

David Rientjes wrote:

> Right, because in Vedran's latest oom log it shows that Xorg is preferred 
> more than any other thread other than the memory hogging test program with 
> your patch than without.  I pointed out a clear distinction in the killing 
> order using both total_vm and rss in that log and in my opinion killing 
> Xorg as opposed to krunner would be undesireable.

But then you should rename OOM killer to TRIPK:
Totally Random Innocent Process Killer

If you have OOM situation and Xorg is the first, that means it's leaking
memory badly and the system is probably already frozen/FUBAR. Killing
krunner in that situation wouldn't do any good. From a user perspective,
nothing changes, system is still FUBAR and (s)he would probably reboot
cursing linux in the process.

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