Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965165AbVJENSF (ORCPT ); Wed, 5 Oct 2005 09:18:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965166AbVJENSF (ORCPT ); Wed, 5 Oct 2005 09:18:05 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:43724 "EHLO ZenIV.linux.org.uk") by vger.kernel.org with ESMTP id S965165AbVJENSE (ORCPT ); Wed, 5 Oct 2005 09:18:04 -0400 Date: Wed, 5 Oct 2005 14:18:04 +0100 From: "Dr. David Alan Gilbert" To: subbie subbie Cc: linux-kernel@vger.kernel.org Subject: Re: 3Ware 9500S-12 RAID controller -- poor performance Message-ID: <20051005131804.GD18448@gallifrey> References: <20051005112558.GC18448@gallifrey> <20051005130817.98406.qmail@web30311.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051005130817.98406.qmail@web30311.mail.mud.yahoo.com> User-Agent: Mutt/1.4.1i X-Chocolate: 70 percent or better cocoa solids preferably X-Operating-System: Linux/2.6.11-1.14_FC3 (i686) X-Uptime: 14:14:19 up 33 days, 1:40, 60 users, load average: 0.00, 0.00, 0.00 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1653 Lines: 44 * subbie subbie (subbie_subbie@yahoo.com) wrote: > A single thread writing at 30MB/s is still not on par > with 3ware's specs. > > I see that you're also running RAID5 and in this case > 3ware did report bad write performance on RAID5 and > that was fixed with recent firmwares. > > The latest linux driver off their website also > includes the latest firmware inside it and flashes the > card upon load, make sure to use that. I've got driver/firmware that is about 2months old that certainly helped; prior to that I was getting card timeouts (although I also upgraded the e1000 driver at the same time so it might have been that rather than the 3ware that helped). (Note: I don't expect a driver to perform a dangerous operation like firmware flashing on boot!) > I'm getting a little over 50MB/s when writing to my > RAID volume when completely idle, there's no reason > why you should get less. Well my ~30MB/s is sucking over gig ether and writing in 10MB chunks; but still 50MB/s for RAID5 feels like it sucks. > I'll let you guys know once I try JBOD (as soon as all > the data is moved away). Nod. Dave -- -----Open up your eyes, open up your mind, open up your code ------- / Dr. David Alan Gilbert | Running GNU/Linux on Alpha,68K| Happy \ \ gro.gilbert @ treblig.org | MIPS,x86,ARM,SPARC,PPC & HPPA | In Hex / \ _________________________|_____ http://www.treblig.org |_______/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/