From owner-freebsd-stable@FreeBSD.ORG Wed Aug 29 18:51:18 2007 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5766116A41A for ; Wed, 29 Aug 2007 18:51:18 +0000 (UTC) (envelope-from vivek@khera.org) Received: from yertle.kcilink.com (thingy.kcilink.com [74.92.149.59]) by mx1.freebsd.org (Postfix) with ESMTP id 2BA1A13C494 for ; Wed, 29 Aug 2007 18:51:18 +0000 (UTC) (envelope-from vivek@khera.org) Received: from [192.168.7.103] (host-103.int.kcilink.com [192.168.7.103]) by yertle.kcilink.com (Postfix) with ESMTP id 625B8B80D for ; Wed, 29 Aug 2007 14:51:17 -0400 (EDT) Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: <20070829184306.GC42906@voodoo.bawue.com> References: <31BB09D7-B58A-47AC-8DD1-6BB8141170D8@khera.org> <94ECF72B-B0E9-492C-8279-29989FAAE19C@khera.org> <20070829184306.GC42906@voodoo.bawue.com> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <786DB564-BBB1-4D7D-ACDF-523F0E7EB291@khera.org> Content-Transfer-Encoding: 7bit From: Vivek Khera Date: Wed, 29 Aug 2007 14:51:16 -0400 To: FreeBSD Stable X-Mailer: Apple Mail (2.752.2) Subject: Re: large RAID volume partition strategy X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Aug 2007 18:51:18 -0000 On Aug 29, 2007, at 2:43 PM, Kirill Ponomarew wrote: > What type I/O did you test, random read/writes, sequential writes ? > The performance of RAID group always depends on what software you > run on your RAID group. If it's database, be prepared for many > random read/writes, hence dd(1) tests would be useless. I ran my database on it with a sample workload based on our live workload. Anything else would be a waste of time.