From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Campbell Subject: Re: Stress testing system? Date: Mon, 11 Oct 2004 13:01:27 +0400 Sender: linux-raid-owner@vger.kernel.org Message-ID: <416A4BE7.4030005@wasp.net.au> References: <4167078A.3030609@robinbowes.com> <4167264B.8070507@robinbowes.com> <4169AB0B.1040709@robinbowes.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: To: Gordon Henderson Cc: Robin Bowes , linux-raid@vger.kernel.org List-Id: linux-raid.ids Gordon Henderson wrote: > On Sun, 10 Oct 2004, Robin Bowes wrote: > > >>This gave the following results: >> >>Version 1.03 ------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 >>dude.robinbow 3096M 13081 95 34159 75 12617 21 15311 92 40429 30 436.1 3 >>dude.robinbowes.com,3096M,13081,95,34159,75,12617,21,15311,92,40429,30,436.1,3,,,,,,,,,,,,, >> >>I don't actually know what the figures mean - is this fast?? > > > It's not brilliant, but reasonable for a RAID5 on IDE drives. Disk head > bandwidth for comodity 7200 RPM drives is about 55MB/sec peak - although I > haven't been able to get that with the SATA controllers I've used so-far, > but I suspect thats because they are running in PATA mode. > Just a point of reference. This is on a single Athlon 2600+ with 10 7200 RPM Maxtor drives on 3 Promise SATA150TX4 controllers Version 1.03 ------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 srv 1G 14502 45 23251 12 17102 9 23390 67 67688 24 638.4 1 srv,1G,14502,45,23251,12,17102,9,23390,67,67688,24,638.4,1,,,,,,,,,,,,, Brad