linux-kernel - Re: Kernel falls apart under light memory pressure (i.e. linking vmlinux)

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Message-ID: <20110519145147.GA14658@localhost>
Date:	Thu, 19 May 2011 22:51:47 +0800
From:	Wu Fengguang <fengguang.wu@...el.com>
To:	Minchan Kim <minchan.kim@...il.com>
Cc:	Andrew Lutomirski <luto@....edu>, Andi Kleen <andi@...stfloor.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Mel Gorman <mgorman@...e.de>,
	Johannes Weiner <hannes@...xchg.org>,
	Rik van Riel <riel@...hat.com>
Subject: Re: Kernel falls apart under light memory pressure (i.e. linking
 vmlinux)

> > I had 6GB swap available, so there shouldn't have
> > been any OOM.
> 
> Yes. It's strange but we have seen such case several times, AFAIR.

I noticed that the test script mounted a "ramfs" not "tmpfs", hence
the 1.4G pages won't be swapped?

Thanks,
Fengguang
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