From owner-freebsd-stable@FreeBSD.ORG Sat Aug 14 03:33:59 2010 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 921D81065675 for ; Sat, 14 Aug 2010 03:33:59 +0000 (UTC) (envelope-from tj@tjvarghese.com) Received: from mail-bw0-f54.google.com (mail-bw0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id 2A6798FC08 for ; Sat, 14 Aug 2010 03:33:58 +0000 (UTC) Received: by bwz20 with SMTP id 20so354705bwz.13 for ; Fri, 13 Aug 2010 20:33:58 -0700 (PDT) MIME-Version: 1.0 Received: by 10.204.45.207 with SMTP id g15mr1342057bkf.14.1281756837807; Fri, 13 Aug 2010 20:33:57 -0700 (PDT) Received: by 10.204.62.133 with HTTP; Fri, 13 Aug 2010 20:33:57 -0700 (PDT) In-Reply-To: <20100813232954.GA53935@icarus.home.lan> References: <20100813160109.8BDDA1CC3A@ptavv.es.net> <20100813232954.GA53935@icarus.home.lan> Date: Sat, 14 Aug 2010 11:33:57 +0800 Message-ID: From: TJ Varghese To: Jeremy Chadwick Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: stable@freebsd.org Subject: Re: Inconsistent IO performance 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: Sat, 14 Aug 2010 03:33:59 -0000 > The deviation in your disk I/O isn't a major surprise (to me anyway), > given the system specs. What *does* surprise me is your abysmal I/O > speeds in general. 18MB/sec min, 24MB/sec max?! ICH6-M can do a lot > more than that. Something isn't right. > > it's possible that the hw is...suboptimal. From a 2005 post, http://forum.thinkpads.com/viewtopic.php?f=2&t=13036&start=0 Check out the link to the hddbenchmark, http://img57.imageshack.us/img57/6430/hddbenchmark1no.jpg regards, TJ