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Message-ID: <20101030190607.GB2918@think>
Date:	Sat, 30 Oct 2010 15:06:07 -0400
From:	Chris Mason <chris.mason@...cle.com>
To:	Aidar Kultayev <the.aidar@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, "Ted Ts'o" <tytso@....edu>,
	Pekka Enberg <penberg@...nel.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <axboe@...nel.dk>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Nick Piggin <npiggin@...e.de>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: 2.6.36 io bring the system to its knees

On Sat, Oct 30, 2010 at 07:02:35PM +0600, Aidar Kultayev wrote:
> Hi,
> 
> here is what I have :
> 
> .ext4 mounted with data=ordered
> .-tip tree ( uname -a gives : Linux pussy 2.6.36-tip+ )
> 
> here is the latencytop & powertop & top screenshot:
> 
> http://picasaweb.google.com/lh/photo/bMTgbVDoojwUeXtVdyvIKw?feat=directlink

It's actually better, fsync is missing anyway.  Please try ext4
data=writeback.

-chris
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