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Date: Mon, 22 Nov 2004 17:55:58 -0200
From: =?ISO-8859-1?Q?Jo=E3o_Carlos_Mendes_Lu=EDs?= <jonny@jonny.eng.br>
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To: Charles Sprickman <spork@fasttrackmonkey.com>
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cc: FUJISHIMA Satsuki <sf@FreeBSD.org>
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cc: David Gilbert <dgilbert@dclg.ca>
Subject: Re: List of fake vs. real SATA drives.
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Charles Sprickman wrote:
> On Mon, 22 Nov 2004, [ISO-8859-1] João Carlos Mendes Luís wrote:
> 
>> What is the practical diference?  Performance?
> 
> 
> I don't know how much of it to believe, since it is marketing material, 
> but the Seagate white paper on their site claims that all the 
> command-queueing stuff brings the performance very close to that of scsi.

IIF they really have command queueing, I do believe.  So, a bridged SATA 
drive will not have command queuing, right?

Does FreeBSD already take advantage of this?  How could I check if my 
SATA drivers have command queueing or not?