From owner-freebsd-performance@FreeBSD.ORG Sat Dec 11 03:41:16 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 C078516A4CE for ; Sat, 11 Dec 2004 03:41:16 +0000 (GMT) Received: from smtp101.rog.mail.re2.yahoo.com (smtp101.rog.mail.re2.yahoo.com [206.190.36.79]) by mx1.FreeBSD.org (Postfix) with SMTP id 417D943D48 for ; Sat, 11 Dec 2004 03:41:16 +0000 (GMT) (envelope-from mikej@rogers.com) Received: from unknown (HELO 172.16.0.1) (mikej@69.193.222.195 with login) by smtp101.rog.mail.re2.yahoo.com with SMTP; 11 Dec 2004 03:41:15 -0000 Received: from 172.16.0.200 (SquirrelMail authenticated user mikej); by 172.16.0.1 with HTTP; Fri, 10 Dec 2004 22:41:05 -0500 (EST) Message-ID: <3304.172.16.0.200.1102736465.squirrel@172.16.0.200> In-Reply-To: <010b01c4df25$14af3ff0$b3db87d4@multiplay.co.uk> References: <17418.69.53.57.66.1102618255.squirrel@69.53.57.66> <20041211010849.GE50516@dragon.nuxi.com> <010b01c4df25$14af3ff0$b3db87d4@multiplay.co.uk> Date: Fri, 10 Dec 2004 22:41:05 -0500 (EST) From: "Mike Jakubik" To: "Steven Hartland" User-Agent: SquirrelMail/1.4.3a X-Mailer: SquirrelMail/1.4.3a MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal cc: freebsd-performance@freebsd.org cc: Bill Anderson 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: Sat, 11 Dec 2004 03:41:16 -0000 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): --- da0 at asr0 bus 0 target 0 lun 0 da0: Fixed Direct Access SCSI-2 device da0: Tagged Queueing Enabled da0: 70006MB (143372288 512 byte sectors: 255H 63S/T 8924C) # diskinfo -tv da0 da0 512 # sectorsize 73406611456 # mediasize in bytes (68G) 143372288 # mediasize in sectors 8924 # Cylinders according to firmware. 255 # Heads according to firmware. 63 # Sectors according to firmware. Seek times: Full stroke: 250 iter in 1.222343 sec = 4.889 msec Half stroke: 250 iter in 1.189145 sec = 4.757 msec Quarter stroke: 500 iter in 2.315375 sec = 4.631 msec Short forward: 400 iter in 1.821531 sec = 4.554 msec Short backward: 400 iter in 1.936996 sec = 4.842 msec Seq outer: 2048 iter in 2.296997 sec = 1.122 msec Seq inner: 2048 iter in 1.991383 sec = 0.972 msec Transfer rates: outside: 102400 kbytes in 3.810755 sec = 26871 kbytes/sec middle: 102400 kbytes in 3.907428 sec = 26206 kbytes/sec inside: 102400 kbytes in 3.235306 sec = 31651 kbytes/sec --- I'm dissapointed in the transfer rates.. seek times however are nice.