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

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Message-ID: <4DDE0CDD.5050000@jp.fujitsu.com>
Date:	Thu, 26 May 2011 17:18:37 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	luto@....edu
CC:	minchan.kim@...il.com, aarcange@...hat.com,
	kamezawa.hiroyu@...fujitsu.com, fengguang.wu@...el.com,
	andi@...stfloor.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, mgorman@...e.de, hannes@...xchg.org,
	riel@...hat.com
Subject: Re: Easy portable testcase! (Re: Kernel falls apart under light memory
 pressure (i.e. linking vmlinux))

(2011/05/26 5:17), Andrew Lutomirski wrote:
> On Tue, May 24, 2011 at 8:43 PM, KOSAKI Motohiro
> <kosaki.motohiro@...fujitsu.com> wrote:
>>
>> Unfortnately, this log don't tell us why DM don't issue any swap io. ;-)
>> I doubt it's DM issue. Can you please try to make swap on out of DM?
>>
>>
> 
> I can do one better: I can tell you how to reproduce the OOM in the
> comfort of your own VM without using dm_crypt or a Sandy Bridge
> laptop.  This is on Fedora 15, but it really ought to work on any
> x86_64 distribution that has kvm.  You'll probably want at least 6GB
> on your host machine because the VM wants 4GB ram.

Hmmm....

I don't have 6GB memory. :-)
I'll try to borrow it from anywhere, but I'd expect my response is delayed
some time.

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