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Date: Thu, 28 Oct 2010 09:47:24 -0400
From: Christoph Hellwig <hch@infradead.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Pekka Enberg <penberg@kernel.org>, Aidar Kultayev <the.aidar@gmail.com>,
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        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
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On Thu, Oct 28, 2010 at 03:30:36PM +0200, Ingo Molnar wrote:
> > Looks mostly VFS to me. Aidar, does killing Picasa make things smoother for you? 
> > If so, maybe the VFS scalability patches will help.
> 
> Hm, but the VFS scalability patches mostly decrease CPU usage, and does that mostly 
> on many-core systems.

If you have i_mutex contention they are not going to change anything.