From owner-freebsd-questions@FreeBSD.ORG Sun Jul 23 06:28:23 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 357A416A4DF for ; Sun, 23 Jul 2006 06:28:23 +0000 (UTC) (envelope-from nikolas.britton@gmail.com) Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.172]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5AE2643D53 for ; Sun, 23 Jul 2006 06:28:22 +0000 (GMT) (envelope-from nikolas.britton@gmail.com) Received: by ug-out-1314.google.com with SMTP id m2so1920499uge for ; Sat, 22 Jul 2006 23:28:21 -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=Cb/wvDR5PpEvUQGm5/qcn09CnOiY4hNugIQvRRuQha8G+ghxPzmVr3xL89fGiJ36KyaXUcBmXKUBQqWyIiHbpkLNJAxTHzF/3eHMMnV0l9AGdB/+6Qo3vAJ2M87w4HIku6SjQqiH1fugw9+WjYmobFQsyZgmAZZ+9gyTCaG1u68= Received: by 10.78.178.5 with SMTP id a5mr1038103huf; Sat, 22 Jul 2006 23:28:20 -0700 (PDT) Received: by 10.78.143.13 with HTTP; Sat, 22 Jul 2006 23:28:20 -0700 (PDT) Message-ID: Date: Sun, 23 Jul 2006 01:28:20 -0500 From: "Nikolas Britton" To: "Richard Collyer" In-Reply-To: <44C27E7B.3070103@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> 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 06:28:23 -0000 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: > diskinfo -t /dev/ad4 /dev/ad4 512 # sectorsize 400088457216 # mediasize in bytes (373G) 781422768 # mediasize in sectors 775221 # Cylinders according to firmware. 16 # Heads according to firmware. 63 # Sectors according to firmware. Seek times: Full stroke: 250 iter in 5.844998 sec = 23.380 msec Half stroke: 250 iter in 4.558075 sec = 18.232 msec Quarter stroke: 500 iter in 7.147166 sec = 14.294 msec Short forward: 400 iter in 2.253667 sec = 5.634 msec Short backward: 400 iter in 2.013481 sec = 5.034 msec Seq outer: 2048 iter in 0.332809 sec = 0.163 msec Seq inner: 2048 iter in 0.349674 sec = 0.171 msec Transfer rates: outside: 102400 kbytes in 1.503943 sec = 68088 kbytes/sec middle: 102400 kbytes in 1.688924 sec = 60630 kbytes/sec inside: 102400 kbytes in 3.021035 sec = 33896 kbytes/sec > > Richard Collyer wrote: > > Hello, > > > > I recently installed a 3ware 9500S-12 along with 3 x 250GB Seagate > > 7200.10 Drives. > > > > I am getting very poor read/write performance on this array that I have > > set up (RAID5 - 64K stripe) > > > > Reading to the 2 mirrored drives that I have on a 3ware 7006-2 I can get > > 8MB/sec over samba which is what I expect. From the new array I am > > getting 4MB/sec. To rule out samba I did a file copy from one array to > > the other an averaged 3.8MB/sec which I assume is being limited by the > > new array. > > > > Any ideas where I can check to see if there are problems and what are > > the first steps / common things that people miss when adding drives. > > > > In short I... > > > > a) installed the drive > > b) disk partitioned using /stand/sysinstall > > c) labelled using the same > > d) edited /etc/drivetabthingy to mount the drive > > > > Anyone else have any other suggestions on what I can check? > > > > Cheers > > Richard > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to > > "freebsd-questions-unsubscribe@freebsd.org" > > > > > > __________ NOD32 1.1674 (20060722) Information __________ > > > > This message was checked by NOD32 antivirus system. > > http://www.eset.com > > > > > > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/