From: Alan <alan@lxorguk.ukuu.org.uk>
To: Luigi Genoni <genoni@sns.it>
Cc: linux-ide@vger.kernel.org, jgarzik@pobox.com, htejun@gmail.com,
alan@red-hat.com, linux-kernel@vger.kernel.org
Subject: Re: [BUG?] ata disk running maximum at DMA33 with 2.6.20 and new pata driver, NV CK804 ide controller.
Date: Wed, 7 Feb 2007 12:20:00 +0000 [thread overview]
Message-ID: <20070207122000.2e17ecb6@localhost.localdomain> (raw)
In-Reply-To: <200702070119.36320.genoni@darkstar.oltrelinux.com>
On Wed, 7 Feb 2007 01:19:36 +0100
Luigi Genoni <genoni@sns.it> wrote:
> Hi,
> since upgrading to kernel 2.6.20 my pata disk, using new pata driver, is
> initialized maximum in DMA33 mode (and obviously performances drop
> consequently), as you can see from:
Interesting.
> Willing to test any patch.
Firstly can you see if its consistently the case that booting 2.6.20
gives UDMA33 and 2.6.19 UDMA100 over a few reboots. If it is please drop
the 2.6.19 drivers/ata/pamd_amd into 2.6.20 and try that.
Thanks
Alan
next prev parent reply other threads:[~2007-02-07 12:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-07 0:19 [BUG?] ata disk running maximum at DMA33 with 2.6.20 and new pata driver, NV CK804 ide controller Luigi Genoni
2007-02-07 10:03 ` venom
2007-02-07 12:20 ` Alan [this message]
2007-02-07 12:44 ` l.genoni
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