From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Thu, 05 Apr 2007 02:03:40 -0700 (PDT) Received: from mail3b1.westend.com (mail3b.westend.com [212.117.79.78]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id l3593afB021908 for ; Thu, 5 Apr 2007 02:03:38 -0700 Date: Thu, 5 Apr 2007 11:03:33 +0200 From: Thomas Kaehn Subject: Re: Strange delete performance using XFS Message-ID: <20070405090333.GE2759@mail3b.westend.com> References: <20070404130535.GE18320@mail3b.westend.com> <20070404154523.GA20096@tuatara.stupidest.org> <20070405072803.GB2759@mail3b.westend.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20070405072803.GB2759@mail3b.westend.com> Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: Chris Wedgwood Cc: xfs@oss.sgi.com Hi Chris, On Thu, Apr 05, 2007 at 09:28:03AM +0200, Thomas Kaehn wrote: > On Wed, Apr 04, 2007 at 08:45:23AM -0700, Chris Wedgwood wrote: > > On Wed, Apr 04, 2007 at 03:05:35PM +0200, Thomas Kaehn wrote: > > > The XFS was first created using default options and later on with > > > "-d su=64k,sw=2 -l su=64k" which improved overall performance > > > but not delete performance. > > > > have you tried w/o using the hw raid? > > I'am going to test with a single disk in the same machine. this is what I got with a single disk (defaults for mkfs.xfs, logbufs=8 for mount) in the same machine: | # time for i in `seq 1 100000`; do dd if=/dev/zero of=$i bs=1k count=20 >/dev/null 2>&1; done | | real 11m22.487s | user 0m30.278s | sys 2m33.762s | # time \rm -rf y | | real 8m20.963s | user 0m0.056s | sys 0m7.968s So there is no improvement for a single disk. Ciao, Thomas -- Thomas Kähn WESTEND GmbH | Internet-Business-Provider Technik CISCO Systems Partner - Authorized Reseller Im Süsterfeld 6 Tel 0241/701333-18 tk@westend.com D-52072 Aachen Fax 0241/911879 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Die Gesellschaft ist eingetragen im Handelsregister Aachen unter HRB 7608 Geschäftsführer: Thomas Neugebauer, Thomas Heller, Michael Kolb