From owner-freebsd-performance@FreeBSD.ORG Mon Dec 13 13:15:08 2004 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 330ED16A4CE for ; Mon, 13 Dec 2004 13:15:08 +0000 (GMT) Received: from clueful.shagged.org (clueful.shagged.org [212.13.201.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id E083E43D48 for ; Mon, 13 Dec 2004 13:15:07 +0000 (GMT) (envelope-from chris@clueful.shagged.org) Received: from chris by clueful.shagged.org with local (Exim 4.40 (FreeBSD)) id 1Cdq2S-000Pxk-Ks; Mon, 13 Dec 2004 13:14:56 +0000 Date: Mon, 13 Dec 2004 13:14:56 +0000 From: Chris Elsworth To: Mike Jakubik Message-ID: <20041213131456.GA99179@shagged.org> References: <20041211010849.GE50516@dragon.nuxi.com> <010b01c4df25$14af3ff0$b3db87d4@multiplay.co.uk> <3304.172.16.0.200.1102736465.squirrel@172.16.0.200> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3304.172.16.0.200.1102736465.squirrel@172.16.0.200> User-Agent: Mutt/1.5.6i Sender: Chris Elsworth X-Shagged-MailScanner-Information: See www.mailscanner.info for information X-Shagged-MailScanner: Found to be clean X-MailScanner-From: chris@clueful.shagged.org cc: freebsd-performance@freebsd.org cc: Bill Anderson cc: Steven Hartland Subject: Re: 2120S poor performance X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Dec 2004 13:15:08 -0000 On Fri, Dec 10, 2004 at 10:41:05PM -0500, Mike Jakubik wrote: > Steven Hartland said: > > 2015S is though which is what I tested and it gives very similar poor > > results > > dmesg |grep asr: > > asr0: ADAPTEC 2015S FW Rev. 3B05, 2 channel, 256 CCBs, Protocol I2O > > > > Does anyone have any RAID5 SCSI card installed that does give good > > results in a straight dd test? > > This is what i get on the following (FreeBSD 5.3-STABLE #0: Sun Nov 7 > 03:25:47 EST 2004): Thought I'd just throw in some pennies. Adaptec 2120 with 4 36GB 15k drives in RAID-10 on a dual Opteron setup: aac0: i960RX 100MHz, 48MB cache memory, optional battery present aac0: Kernel 4.0-0, Build 6011, S/N ba9122 aac0: Supported Options=1f7e aacd0: on aac0 aacd0: 70379MB (144136192 sectors) db0# diskinfo -tv aacd0 aacd0 512 # sectorsize 73797730304 # mediasize in bytes (69G) 144136192 # mediasize in sectors 8972 # Cylinders according to firmware. 255 # Heads according to firmware. 63 # Sectors according to firmware. Seek times: Full stroke: 250 iter in 1.081569 sec = 4.326 msec Half stroke: 250 iter in 1.221720 sec = 4.887 msec Quarter stroke: 500 iter in 1.885768 sec = 3.772 msec Short forward: 400 iter in 0.717400 sec = 1.794 msec Short backward: 400 iter in 1.948922 sec = 4.872 msec Seq outer: 2048 iter in 1.011799 sec = 0.494 msec Seq inner: 2048 iter in 1.032267 sec = 0.504 msec Transfer rates: outside: 102400 kbytes in 1.652271 sec = 61975 kbytes/sec middle: 102400 kbytes in 1.777489 sec = 57609 kbytes/sec inside: 102400 kbytes in 1.593512 sec = 64261 kbytes/sec Quite happy with those figures - I hear there's a newer kernel/bios for the 2120 which might improve performance but I've not tried it (build 7244) -- Chris