linux-kernel - Re: OOM notifications

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Message-ID: <4724FC38.30909@linux.vnet.ibm.com>
Date:	Mon, 29 Oct 2007 02:46:40 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Marcelo Tosatti <marcelo@...ck.org>, linux-kernel@...r.kernel.org,
	drepper@...hat.com, riel@...hat.com,
	Martin Bligh <mbligh@...igh.org>, linux-mm@...ck.org
Subject: Re: OOM notifications

Andrew Morton wrote:
> It get more complicated with NUMA memory nodes and cgroup memory
> controllers.
> 

At OLS this year, users wanted user space notification of OOM
for cgroup memory controller. When a group is about to OOM,
a notification can help an external application re-adjust
memory limits across the system.

Keeping some memory reserved for handling OOM, this scheme could
be extended to handle global OOM conditions as well.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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