From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Lord <liml@rtr.ca>
Subject: Re: [PATCH #upstream-fixes] sata_mv: don't issue two DMA commands
 concurrently
Date: Thu, 14 Aug 2008 08:40:32 -0400
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To: Artem Bokhan <aptem@ngs.ru>
Cc: Tejun Heo <htejun@gmail.com>, linux-ide@vger.kernel.org

Artem Bokhan wrote:
..
> IMHO, looks like cavity somewhere... Any ideas?
..

Have you tried to disable fs read-ahead?

Something like "hdparm -a0 /dev/sd*" ?

-ml