From owner-freebsd-hackers@FreeBSD.ORG Mon Nov 22 19:26:19 2004 Return-Path: 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 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 In-Reply-To: References: <16798.12075.465147.307112@canoe.dclg.ca> <864qjixdpi.wl%sf@FreeBSD.org> <41A1FB7D.9000308@jonny.eng.br> X-Mailer: VM 7.17 under 21.5 (beta17) "chayote" (+CVS-20040321) XEmacs Lucid cc: FUJISHIMA Satsuki cc: freebsd-hackers@freebsd.org cc: =?ISO-8859-1?Q?Jo=E3o_Carlos_Mendes_Lu=EDs?= cc: David Gilbert 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Nov 2004 19:26:19 -0000 >>>>> "Charles" =3D=3D Charles Sprickman 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