From: "Al Boldi" <a1426z@gawab.com>
To: 'Albert Lee' <albertcc@tw.ibm.com>, 'Jeff Garzik' <jgarzik@pobox.com>
Cc: doug_maxey@us.ibm.com, linux-ide@vger.kernel.org,
'Bartlomiej Zolnierkiewicz' <B.Zolnierkiewicz@elka.pw.edu.pl>,
'Alan Cox' <alan@lxorguk.ukuu.org.uk>,
'Tejun Heo' <htejun@gmail.com>,
'Benjamin Herrenschmidt' <benh@kernel.crashing.org>
Subject: RE: Organized summary of the pacthes
Date: Thu, 30 Jun 2005 15:45:45 +0300 [thread overview]
Message-ID: <200506301246.PAA29456@raad.intranet> (raw)
In-Reply-To: <42C3B0B1.6090001@tw.ibm.com>
By the way,
Why is the ide-driver in so slow?
Hdparm -tT gives 28mb/s in 2.6.12
Cat /dev/hda > /dev/null gives 2% user 25% sys 0% idle 73% IOWAIT
Hdparm -tT gives 38mb/s in 2.4.31
Cat /dev/hda > /dev/null gives 2% user 33% sys 65% idle
It feels like DMA is not being applied properly in 2.6.12.
Your comments please.
Thanks!
next prev parent reply other threads:[~2005-06-30 13:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <42C12A10.8030308@tw.ibm.com>
2005-06-28 15:21 ` Organized summary of the pacthes Jeff Garzik
2005-06-28 18:00 ` Alan Cox
2005-07-10 0:54 ` Doug Maxey
2005-07-10 3:44 ` Jeff Garzik
2005-06-30 8:43 ` Albert Lee
2005-06-30 12:45 ` Al Boldi [this message]
2005-07-02 5:24 ` Tejun Heo
2005-06-30 17:10 ` Olaf Hering
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