From: Alan <alan@lxorguk.ukuu.org.uk>
To: "Martin A. Fink" <fink@mpe.mpg.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: SATA Performance with Intel ICH6
Date: Tue, 28 Nov 2006 10:43:51 +0000 [thread overview]
Message-ID: <20061128104351.1bc34eee@localhost.localdomain> (raw)
In-Reply-To: <200611281109.47438.fink@mpe.mpg.de>
On Tue, 28 Nov 2006 11:09:47 +0100
"Martin A. Fink" <fink@mpe.mpg.de> wrote:
> Dear Alan,
>
> You wrote
> > The PIIX interface needs CPU intervention each command, so in practice
> > about every 64K or so, and the CPU gets stalled waiting for the disk
> > during the setup of each I/O. The newer kernels support AHCI which does
> > not have this overhead, but it is only present on the newest intel
> > controllers.
>
> Can you tell me the name of these newest controllers? Is it ICH7 or 8 ?
> What kernel versions? dmesg only shows ACPI and u/e/o hci_* host controller.
> (kernel version is 2.6.8-24.25-smp). How can I switch to AHCI ?
According to the docs
ICH6
ICH6M
ICH7
ICH7M
ICH7R
ESB2
ICH7-M DH
ICH8
ICH8M
These devices support both "legacy" and "ahci" modes of operation,
usually controlled by a BIOS setting.
next prev parent reply other threads:[~2006-11-28 10:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-28 10:09 SATA Performance with Intel ICH6 Martin A. Fink
2006-11-28 10:43 ` Alan [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-11-24 14:30 Daniel J Blueman
2006-11-24 13:07 Martin A. Fink
2006-11-24 13:33 ` Alan
2006-11-24 14:10 ` Martin A. Fink
2006-11-24 14:30 ` Alan
2006-11-24 14:54 ` Martin A. Fink
2006-11-25 19:23 ` Andrew Morton
2006-11-24 14:05 ` Ed Sweetman
2006-11-24 22:10 ` J.A. Magallón
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