From owner-freebsd-questions@FreeBSD.ORG Wed Jan 17 11:06:01 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8125B16A4C8 for ; Wed, 17 Jan 2007 11:06:01 +0000 (UTC) (envelope-from steve@midden.org) Received: from midden.org (midden.org [86.54.4.134]) by mx1.freebsd.org (Postfix) with ESMTP id 092F113C44B for ; Wed, 17 Jan 2007 11:06:01 +0000 (UTC) (envelope-from steve@midden.org) Received: from www.midden.org (localhost.midden.org [127.0.0.1]) by midden.org (Postfix) with ESMTP id 2426611435; Wed, 17 Jan 2007 11:05:11 +0000 (GMT) Received: from 86.54.4.134 (proxying for 86.54.4.134) (SquirrelMail authenticated user steve) by www.midden.org with HTTP; Wed, 17 Jan 2007 11:05:12 -0000 (UTC) Message-ID: <64770.86.54.4.134.1169031912.squirrel@www.midden.org> In-Reply-To: <20070116144255.08f9f049.wmoran@collaborativefusion.com> References: <53186.86.54.4.134.1168964729.squirrel@www.midden.org> <20070116131357.1c8972eb.wmoran@collaborativefusion.com> <65531.86.54.4.134.1168975434.squirrel@www.midden.org> <20070116144255.08f9f049.wmoran@collaborativefusion.com> Date: Wed, 17 Jan 2007 11:05:12 -0000 (UTC) From: "Steven Lowry" To: freebsd-questions@freebsd.org User-Agent: SquirrelMail/1.4.9a MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal Cc: ivoras@fer.hr, Bill Moran Subject: Re: Very Poor Raid Card Performance - Solved 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: Wed, 17 Jan 2007 11:06:01 -0000 Problem solved, I believe. Here is the results from Bonnie++ with the raid card set to "writethru" which writes directly to disk. Version 1.93c ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP Mort 2G 322 99 17482 4 20280 7 683 99 581645 99 2261 65 Latency 25812us 260ms 1049ms 137ms 627us 100ms I then set the card to "writeback" and got this. Version 1.93c ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP Mort 2G 318 98 100299 37 96431 41 676 99 414514 99 9853 425 Latency 79085us 250ms 263ms 127ms 651us 97392us Looks like write caching was not enabled, don't know why it worked in windows XP though. Thankfully I have a good UPS, wouldn't want to lose data because of a power loss. A big thanks to everyone for your advice. Steve... -- Folding@home http://folding.stanford.edu/