Received: with ECARTIS (v1.0.0; list xfs); Tue, 05 Dec 2006 14:29:16 -0800 (PST) Received: from mail.g-house.de (ns2.g-housing.de [81.169.133.75]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id kB5MT7aG015152 for ; Tue, 5 Dec 2006 14:29:08 -0800 Received: from [82.41.152.154] (helo=82-41-152-154.cable.ubr01.linl.blueyonder.co.uk) by mail.g-house.de with esmtpsa (TLS-1.0:DHE_RSA_AES_256_CBC_SHA:32) (Exim 4.50) id 1Grily-00076E-L7; Tue, 05 Dec 2006 23:28:22 +0100 Date: Tue, 5 Dec 2006 22:28:18 +0000 (GMT) From: Christian Kujau X-X-Sender: evil@sheep.housecafe.de To: David Chinner cc: Iustin Pop , xfs@oss.sgi.com Subject: Re: mkfs.xfs questions In-Reply-To: <20061205212649.GV44411608@melbourne.sgi.com> Message-ID: References: <20061129174553.e0ef3465.jasmin@pacifica.ch> <20061201183034.GA20595@teal.hq.k1024.org> <20061202111546.GA18661@teal.hq.k1024.org> <20061205212649.GV44411608@melbourne.sgi.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-archive-position: 9888 X-ecartis-version: Ecartis v1.0.0 Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com X-original-sender: lists@nerdbynature.de Precedence: bulk X-list: xfs Content-Length: 1032 Lines: 31 On Wed, 6 Dec 2006, David Chinner wrote: > For that data set size you tested. However you might find a > difference if your tests actually write the data back to disk > because a lot of the tests are running out of cache. Ha, thanks for reminding me! Now I remember why all my other tests were done with 2GB of data, having 1GB of RAM ;) > Typically, you need to be writing/reading files at least 2x the > size of memory I started a test with 4GB of data (bonnie++ -s 4096m) an hour ago... > and create/delete a fileset of at least 1,000,000 > files to really determine differences in performance from hm, that would be 'bonnie++ -n 1000' instead of the "-n 100" I'm testing right now. Thanks for the hints, David! If you/someone know any better/closer-to-real-usage benchmarks, please let me know. I'm testing with bonnie++ because it I don't know any better. is iozone any good? is tiobench still worth to try? Christian. -- BOFH excuse #208: Your mail is being routed through Germany ... and they're censoring us.