From owner-freebsd-stable@FreeBSD.ORG Wed Jun 1 17:23:06 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EE8A316A41C for ; Wed, 1 Jun 2005 17:23:06 +0000 (GMT) (envelope-from killing@multiplay.co.uk) Received: from multiplay.co.uk (www1.multiplay.co.uk [212.42.16.7]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6822643D53 for ; Wed, 1 Jun 2005 17:23:04 +0000 (GMT) (envelope-from killing@multiplay.co.uk) Received: from vader ([212.135.219.179]) by multiplay.co.uk (multiplay.co.uk [212.42.16.7]) (MDaemon.PRO.v8.0.2.R) with ESMTP id md50001452689.msg for ; Wed, 01 Jun 2005 18:17:37 +0100 Message-ID: <007a01c566ce$6e3fd3a0$b3db87d4@multiplay.co.uk> From: "Steven Hartland" To: "Dan Nelson" References: <006201c56633$5bc48c20$b3db87d4@multiplay.co.uk> <20050531233612.GD20906@tigerfish2.my.domain> <429D0C65.6010308@alumni.rice.edu> <003401c56696$0858c4d0$b3db87d4@multiplay.co.uk> <20050601150754.GE20906@tigerfish2.my.domain> <00b901c566bd$d48f2450$b3db87d4@multiplay.co.uk> <20050601162914.GD90259@dan.emsphone.com> Date: Wed, 1 Jun 2005 18:22:00 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2527 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 X-Spam-Processed: multiplay.co.uk, Wed, 01 Jun 2005 18:17:37 +0100 (not processed: message from valid local sender) X-MDRemoteIP: 212.135.219.179 X-Return-Path: killing@multiplay.co.uk X-MDaemon-Deliver-To: freebsd-stable@freebsd.org X-MDAV-Processed: multiplay.co.uk, Wed, 01 Jun 2005 18:17:39 +0100 Cc: freebsd-stable@freebsd.org Subject: Re: good performing SCSI RAID5 ( was: asr ( 2015S ) support in 5.4 amd64? ) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Jun 2005 17:23:07 -0000 ----- Original Message ----- From: "Dan Nelson" > The faster rpms will get you more concurrent I/Os per second but won't > do as much for throughput. My asr 3200S cards got repurposed before I > could try them with 5.x, but with the 370F firmware I'm pretty sure I > was able to get more than 40MB/sec reads out of them on 4.x with 4-disk > RAID5 sets. Since the asr driver needs Giant, try a UP kernel and see > if it goes any faster. Stated max seq read on the drives ( Maxtor 10k IV's ) is 89MB/s where as the Seagate SATA's its 65MB/s so its a noticeable difference. For the RAID to only give 27->33MB/s ( still testing stripe sizes ) is disappointing to say the least, especially considering I have the SATA RAID giving me 200MB/s. Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone (023) 8024 3137 or return the E.mail to postmaster@multiplay.co.uk.