From owner-freebsd-questions@FreeBSD.ORG Sun Jul 23 09:15:41 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E39D816A4DA for ; Sun, 23 Jul 2006 09:15:41 +0000 (UTC) (envelope-from nikolas.britton@gmail.com) Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.169]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1AFCE43D49 for ; Sun, 23 Jul 2006 09:15:40 +0000 (GMT) (envelope-from nikolas.britton@gmail.com) Received: by ug-out-1314.google.com with SMTP id j3so1837460ugf for ; Sun, 23 Jul 2006 02:15:39 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=PrlcGtwzUQjVAOzLWKGdRFz6uPXIWmUIx2RW/Ed1PZttdZoSz5S4FT7vU19I2FxF0UHnlAOVJbSoE2FmA2EtLZeAnadd0MWLYY1FdX08ClmPz06X2DV+bKITwJ0BQoLj4z33Jkncd/cPRDEOJu2VMH3ccY2kzYXRiDpaxKI/35A= Received: by 10.78.159.7 with SMTP id h7mr1043081hue; Sun, 23 Jul 2006 02:15:39 -0700 (PDT) Received: by 10.78.143.13 with HTTP; Sun, 23 Jul 2006 02:15:39 -0700 (PDT) Message-ID: Date: Sun, 23 Jul 2006 04:15:39 -0500 From: "Nikolas Britton" To: "Richard Collyer" In-Reply-To: <44C3302A.5070803@firebadger.net> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <44C26B7A.30200@firebadger.net> <44C27E7B.3070103@firebadger.net> <44C3302A.5070803@firebadger.net> Cc: freebsd-questions@freebsd.org Subject: Re: Slow Write Performance on 3ware controller X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 23 Jul 2006 09:15:42 -0000 On 7/23/06, Richard Collyer wrote: > Nikolas Britton wrote: > > On 7/22/06, Richard Collyer wrote: > >> Completely ignore me. Write caching wasnt turned on. > >> > > > > Even with write caching off you should be able to hit 50MB/s... did I > > missing something? Try running 'diskinfo -t /dev/diskname'. For > > refrence here are the numbers from my single 400GB Seagate ST3400832AS > > drive, if you can't bet it then something is wrong with your setup: > > I get: > > [root@brian:/home/richard] $ diskinfo -t /dev/da0 > /dev/da0 > 512 # sectorsize > 499977814016 # mediasize in bytes (466G) > 976519168 # mediasize in sectors > 60785 # Cylinders according to firmware. > 255 # Heads according to firmware. > 63 # Sectors according to firmware. > > Seek times: > Full stroke: 250 iter in 2.572859 sec = 10.291 msec > Half stroke: 250 iter in 2.957264 sec = 11.829 msec > Quarter stroke: 500 iter in 6.256571 sec = 12.513 msec > Short forward: 400 iter in 2.555676 sec = 6.389 msec > Short backward: 400 iter in 2.474576 sec = 6.186 msec > Seq outer: 2048 iter in 0.556584 sec = 0.272 msec > Seq inner: 2048 iter in 0.593798 sec = 0.290 msec > Transfer rates: > outside: 102400 kbytes in 2.080951 sec = 49208 > kbytes/sec > middle: 102400 kbytes in 2.102060 sec = 48714 > kbytes/sec > inside: 102400 kbytes in 2.054728 sec = 49836 > kbytes/sec > > Not too bad, not too great. > That would be unacceptable in my book. Whats the load on the system? Is the 3ware 9500S in a regular PCI 33MHz/32-bit slot? Motherboard/CPU? -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/