From owner-freebsd-performance@FreeBSD.ORG  Wed Sep 30 22:36:48 2009
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Date: Thu, 01 Oct 2009 00:36:45 +0200
From: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de>
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To: Erik Trulsson <ertr1013@student.uu.se>
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Cc: freebsd-performance@freebsd.org, freebsd-stable@freebsd.org,
	Oliver Lehmann <lehmann@ans-netz.de>, Robert Noland <rnoland@freebsd.org>,
	Andriy Gapon <avg@icyb.net.ua>
Subject: Re: SATA is to slow comparing with linux
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Erik Trulsson wrote:
> On Wed, Sep 30, 2009 at 08:05:32PM +0200, Oliver Lehmann wrote:
>> Andriy Gapon wrote:
>>
>>> What mode do you have set for your controllers in BIOS?
>>> AHCI or IDE/Legacy/etc?
>> Yeah I read about this too but my BIOS offers only "RAID" and "SATA" -
>> tried both so I think AHCI is just not supported on my K8T800Pro chipset
>> for the SATA controller.
> 
> No, AHCI isn't supported there.  The VIA K8T800Pro chipset was one of the
> earlier chipsets with built-in support for SATA, and back then AHCI had not
> been defined yet.  There are many other SATA controllers which also do not
> support AHCI.


... as the nVidia nForce4/32 (CK804) on many Socket S939-boards for AMD
Athlon64 or singlesocket Opterons.

Regards,
Oliver