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Date: Tue, 30 Nov 2010 12:05:17 -0800 (PST)
From: David Rientjes <rientjes@google.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
cc: "Figo.zhang" <figo1802@gmail.com>, lkml <linux-kernel@vger.kernel.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        Andrew Morton <akpm@osdl.org>,
        Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH v2]mm/oom-kill: direct hardware access processes should
 get bonus
In-Reply-To: <20101130220107.8328.A69D9226@jp.fujitsu.com>
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References: <20101123154843.7B8D.A69D9226@jp.fujitsu.com> <alpine.DEB.2.00.1011271733460.3764@chino.kir.corp.google.com> <20101130220107.8328.A69D9226@jp.fujitsu.com>
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On Tue, 30 Nov 2010, KOSAKI Motohiro wrote:

> > I needed a small bias for CAP_SYS_ADMIN tasks so I chose 3% since it's the 
> > same proportion used elsewhere in the kernel and works nicely since the 
> > badness score is now a proportion.  
> 
> Why? Is this important than X?
> 

We have always preferred to break ties between applications by not 
preferring the root task over the user task in the oom killer.  If you'd 
like to remove this bonus for CAP_SYS_ADMIN, please propose a patch.  
Thanks!
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