linux-kernel - Re: Improving OOM killer

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Message-Id: <201002102234.38377.l.lunak@suse.cz>
Date:	Wed, 10 Feb 2010 22:34:38 +0100
From:	Lubos Lunak <l.lunak@...e.cz>
To:	Rik van Riel <riel@...hat.com>
Cc:	David Rientjes <rientjes@...gle.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Nick Piggin <npiggin@...e.de>, Jiri Kosina <jkosina@...e.cz>
Subject: Re: Improving OOM killer

On Wednesday 10 of February 2010, Rik van Riel wrote:
> On 02/10/2010 03:54 PM, Lubos Lunak wrote:
> >   Simply computing the cost of the whole children subtree (or a
> > reasonable approximation) avoids the need for any magic numbers and gives
> > a much better representation of how costly the subtree is, since, well,
> > it is the cost itself.
>
> That assumes you want to kill off that entire tree.

 As said in another mail, I think I actually do, since the entire tree is 
indentified as the problem. But regardless of that, surely computing the cost 
of a forkbomb by computing something that is close to the actual cost of it 
is better than trying magic numbers?

-- 
 Lubos Lunak
 openSUSE Boosters team, KDE developer
 l.lunak@...e.cz , l.lunak@....org
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