From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan-Frode Myklebust Subject: Re: 3ware + RAID5 + xfs performance Date: Wed, 27 Jul 2005 19:36:29 +0200 Message-ID: <20050727173629.GA14879@ii.uib.no> References: <200507252134.13869.hjm@tacgi.com> <20050727092104.GA6215@ii.uib.no> <200507270915.32011.hjm@tacgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <200507270915.32011.hjm@tacgi.com> Sender: linux-xfs-bounce@oss.sgi.com Errors-to: linux-xfs-bounce@oss.sgi.com To: Harry Mangalam Cc: linux-raid@vger.kernel.org, linux-xfs@oss.sgi.com List-Id: linux-raid.ids On Wed, Jul 27, 2005 at 09:15:31AM -0700, Harry Mangalam wrote: > That's very impressive! How many config iterations did you have to do to get > this perf? Not too many I think.. only tried a few tunings of stripe-unit in the 3ware CLI, and scratched my heads a few times to try to understand the mkfs.xfs sunit/swidth-options.. > > I'd certainly consider GPFS but I was under the impression that it was only > available for IBM-branded Linux boxes w/ customized kernels. Can you buy it > a la carte? Yes, and maybe even for free from the IBM Scholars programme if you qualify. But yes, it does require a couple of "GPFS" kernel modules, which will typically only build for vendor kernels (i.e. not keeping up with the latest kernel.org releases). We're running a RHEL-3 clone, so that's not been a problem for us so far. -jf