From owner-freebsd-performance@FreeBSD.ORG Wed Apr 20 08:17:32 2005 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 7F43316A4CE for ; Wed, 20 Apr 2005 08:17:32 +0000 (GMT) Received: from rproxy.gmail.com (rproxy.gmail.com [64.233.170.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1356943D3F for ; Wed, 20 Apr 2005 08:17:32 +0000 (GMT) (envelope-from kometen@gmail.com) Received: by rproxy.gmail.com with SMTP id a41so57721rng for ; Wed, 20 Apr 2005 01:17:31 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=kpWu2mWz5GMsTSIpjBLGqlWvGyMaXWUt/3bVIHom0EBnJUQ3wRapKXAGq9qQpkTtzXQPJPNxWp9E8MthXrKEtoC478eYTQUCfDV4YaSfFVhnahknWHsEIeIbITSFa/VK2jwYDhDAHMl1qsE0JcVXh5Vj3yUqRiKLO2s5NY8df0c= Received: by 10.38.125.45 with SMTP id x45mr753968rnc; Wed, 20 Apr 2005 01:17:31 -0700 (PDT) Received: by 10.38.149.53 with HTTP; Wed, 20 Apr 2005 01:17:31 -0700 (PDT) Message-ID: Date: Wed, 20 Apr 2005 10:17:31 +0200 From: Claus Guttesen To: Eric Anderson In-Reply-To: <42650EB2.4040409@centtech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: <4264EC60.3020600@centtech.com> <4264EF40.3060900@centtech.com> <4264F8A8.3080405@centtech.com> <426507DC.50409@centtech.com> <42650EB2.4040409@centtech.com> cc: freebsd-performance@freebsd.org Subject: Re: some simple nfs-benchmarks on 5.4 RC2 X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Claus Guttesen List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Apr 2005 08:17:32 -0000 > >>I think you are disk bound.. You should not be disk bound at this poin= t with a > >>good RAID controller.. > > Good point, it's an atabeast from nexsan. > Looks like they are indeed waiting on disk.. You could try making two 6 d= isk > raid5 in your controller, then striping those with vinum. That might hel= p. > Possibly, if your controller supports it, setting up the array as JBOD, a= nd then > use vinum to build your raid 5 (not sure if it will be faster or not). I had a raid 5 volume with 5 disks (1.6 TB) and did the same dd: elin% dd if=3D/dev/zero of=3D/nfssrv/dd.tst bs=3D1024 count=3D1048576 1048576+0 records in 1048576+0 records out 1073741824 bytes transferred in 21.373114 secs (50237968 bytes/sec) The dd on the other raid-volume (12 disks) did also comlete in approx. 22 sec. So no difference when I lower the number of disks in an array. Frame size on the storage-device is 2112 (bytes). regards Claus