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Message-ID: <20121023083556.GB15397@dhcp22.suse.cz>
Date:	Tue, 23 Oct 2012 10:35:58 +0200
From:	Michal Hocko <mhocko@...e.cz>
To:	Qiang Gao <gaoqiangscut@...il.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	"cgroups@...r.kernel.org" <cgroups@...r.kernel.org>,
	linux-mm@...ck.org, bsingharora@...il.com
Subject: Re: process hangs on do_exit when oom happens

On Tue 23-10-12 11:35:52, Qiang Gao wrote:
> I'm sure this is a global-oom,not cgroup-oom. [the dmesg output in the end]

Yes this is the global oom killer because:
> cglimit -M 700M ./tt 
> then after global-oom,the process hangs..

> 179184 pages RAM

So you have ~700M of RAM so the memcg limit is basically pointless as it
cannot be reached...
-- 
Michal Hocko
SUSE Labs
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