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Message-ID: <20090324093245.GA22483@elte.hu>
Date:	Tue, 24 Mar 2009 10:32:45 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	David Rees <drees76@...il.com>, Jesper Krogh <jesper@...gh.cc>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 2.6.29


* Alan Cox <alan@...rguk.ukuu.org.uk> wrote:

> > posted to the list earlier trying to see if there was anything that
> > could be done to help my specific case.  I've got a system where if
> > someone starts writing out a large file, it kills client NFS writes.
> > Makes the system unusable:
> > http://marc.info/?l=linux-kernel&m=123732127919368&w=2
> 
> I have not had this problem since I applied Arjan's (for some reason
> repeatedly rejected) patch to change the ioprio of the various writeback
> daemons. Under some loads changing to the noop I/O scheduler also seems
> to help (as do most of the non default ones)

(link would be useful)

	Ingo
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