From owner-freebsd-hackers@FreeBSD.ORG  Mon Nov 22 19:26:19 2004
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 1AEC016A4CE; Mon, 22 Nov 2004 19:26:19 +0000 (GMT)
Received: from ox.eicat.ca (ox.eicat.ca [66.96.30.35])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id D3C4843D1D; Mon, 22 Nov 2004 19:26:18 +0000 (GMT)
	(envelope-from dgilbert@daveg.ca)
Received: by ox.eicat.ca (Postfix, from userid 66)
	id 45C52CECA; Mon, 22 Nov 2004 14:26:18 -0500 (EST)
Received: by canoe.dclg.ca (Postfix, from userid 101)
	id 310D8680F; Mon, 22 Nov 2004 14:26:14 -0500 (EST)
From: David Gilbert <dgilbert@dclg.ca>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable
Message-ID: <16802.15702.58144.76512@canoe.dclg.ca>
Date: Mon, 22 Nov 2004 14:26:14 -0500
To: Charles Sprickman <spork@fasttrackmonkey.com>
In-Reply-To: <Pine.OSX.4.61.0411221417120.787@oof.local>
References: <16798.12075.465147.307112@canoe.dclg.ca>
	<864qjixdpi.wl%sf@FreeBSD.org>
	<41A1FB7D.9000308@jonny.eng.br>
	<Pine.OSX.4.61.0411221417120.787@oof.local>
X-Mailer: VM 7.17 under 21.5  (beta17) "chayote" (+CVS-20040321) XEmacs Lucid
cc: FUJISHIMA Satsuki <sf@FreeBSD.org>
cc: freebsd-hackers@freebsd.org
cc: =?ISO-8859-1?Q?Jo=E3o_Carlos_Mendes_Lu=EDs?= <jonny@jonny.eng.br>
cc: David Gilbert <dgilbert@dclg.ca>
Subject: Re: List of fake vs. real SATA drives.
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 22 Nov 2004 19:26:19 -0000

>>>>> "Charles" =3D=3D Charles Sprickman <spork@fasttrackmonkey.com> wr=
ites:

Charles> On Mon, 22 Nov 2004, [ISO-8859-1] Jo=E3o Carlos Mendes Lu=EDs
Charles> wrote:
>> What is the practical diference?  Performance?

Charles> I don't know how much of it to believe, since it is marketing
Charles> material, but the Seagate white paper on their site claims
Charles> that all the command-queueing stuff brings the performance
Charles> very close to that of scsi.

Charles> This last weekend I put together a box with a 3Ware SATA RAID
Charles> controller and two of the Seagate drives.  The controller is
Charles> probably a bit of a bottleneck, but that sucker was still
Charles> incredibly fast for the price (about $300 for the controller,
Charles> $100 for for each of the two Seagate 160GB drives).  At $2
Charles> per mirrored gigabyte, I'm not complaining.

Does the 3ware support command queueing ... or is it purely a driver
issue?  Does FreeBSD support queueing?  Does FreeBSD support queueing
on all supported SATA controllers ... or just some?

Dave.

--=20
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D
|David Gilbert, Independent Contractor.       | Two things can only be =
    |
|Mail:       dave@daveg.ca                    |  equal if and only if t=
hey |
|http://daveg.ca                              |   are precisely opposit=
e.  |
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3DGLO=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D