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Date: Sat, 30 Oct 2010 15:06:07 -0400
From: Chris Mason <chris.mason@oracle.com>
To: Aidar Kultayev <the.aidar@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>, "Ted Ts'o" <tytso@mit.edu>,
        Pekka Enberg <penberg@kernel.org>, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org, Linus Torvalds <torvalds@linux-foundation.org>,
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        Jens Axboe <axboe@kernel.dk>, Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Nick Piggin <npiggin@suse.de>, Arjan van de Ven <arjan@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: 2.6.36 io bring the system to its knees
Message-ID: <20101030190607.GB2918@think>
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	Aidar Kultayev <the.aidar@gmail.com>, Ingo Molnar <mingo@elte.hu>,
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	Thomas Gleixner <tglx@linutronix.de>
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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