linux-kernel - Re: unresponsiveness on linux desktop during file copy

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Message-ID: <20090516215719.1fe0d583@infradead.org>
Date:	Sat, 16 May 2009 21:57:19 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Satish Eerpini <eerpini@...il.com>
Cc:	Wu Fengguang <fengguang.wu@...el.com>,
	Rik van Riel <riel@...hat.com>,
	Ray Lee <ray-lk@...rabbit.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: unresponsiveness on linux desktop during file copy

On Sun, 17 May 2009 10:00:28 +0530
Satish Eerpini <eerpini@...il.com> wrote:

> > I've prepared a rolled up patch for you, run time tested.  It should
> > protect all of the above pages from being evicted by large file
> > copies.
> >
> > The attached patch is for 2.6.29.
> 
> I applied the patch , but the number don seem to show much difference
> , following are the statistics with the patched kernel, could
> something else be causing the huge iowait,  :
> 


for i in `pidof kjournald` ; do ionice -c1 -p $i ; done

is another thing to try to fix the responsiveness...

-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
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