linux-kernel - Re: SATA-performance: Linux vs. FreeBSD

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Message-ID: <20070213171233.GA6798@havoc.gtf.org>
Date:	Tue, 13 Feb 2007 12:12:33 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Alan <alan@...rguk.ukuu.org.uk>
Cc:	"Martin A. Fink" <fink@....mpg.de>, linux-kernel@...r.kernel.org
Subject: Re: SATA-performance: Linux vs. FreeBSD

On Tue, Feb 13, 2007 at 11:25:27AM +0000, Alan wrote:
> > So where is the difference between SATA-I and SATA-II ?
> 
> All physical side if they are on the same controller when you do the
> tests. Mostly latency,

SATA-II is a highly confusing marketing term.  It is /not/ a technical
term.

In some cases there are NO differences between SATA-I and SATA-II.  You
can find 1.5Gbps non-NCQ-supporting devices claiming SATA-II.

Similarly, there is no "SATA version" word in the IDENTIFY DEVICE page,
like there are "ATA version" words.

	Jeff

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