From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Thu, 25 Sep 2008 16:53:21 -0700 (PDT) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.168.28]) by oss.sgi.com (8.12.11.20060308/8.12.11/SuSE Linux 0.7) with ESMTP id m8PNrKdr004566 for ; Thu, 25 Sep 2008 16:53:20 -0700 Received: from ipmail04.adl2.internode.on.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id C8CF3107BA87 for ; Thu, 25 Sep 2008 16:54:55 -0700 (PDT) Received: from ipmail04.adl2.internode.on.net (ipmail04.adl2.internode.on.net [203.16.214.57]) by cuda.sgi.com with ESMTP id 2aW4zo73flJF260P for ; Thu, 25 Sep 2008 16:54:55 -0700 (PDT) Date: Fri, 26 Sep 2008 09:54:53 +1000 From: Dave Chinner Subject: Re: Speed of rm compared to reiserfs (slow) Message-ID: <20080925235453.GF27997@disturbed> References: <48D9FDA1.8050701@gmail.com> <20080925002724.GA27997@disturbed> <48DB48E3.3020104@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <48DB48E3.3020104@gmail.com> Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: =?iso-8859-1?B?VPZy9ms=?= Edwin Cc: xfs@oss.sgi.com On Thu, Sep 25, 2008 at 11:16:35AM +0300, Török Edwin wrote: > On 2008-09-25 03:27, Dave Chinner wrote: > > On Wed, Sep 24, 2008 at 11:43:13AM +0300, Török Edwin wrote: > Thanks for the suggestions, the time for rm has improved a bit, but is > still slower than reiserfs: > > time rm -rf gcc > > real 1m18.818s > user 0m0.156s > sys 0m11.777s > > Is there anything else I can try to make it faster? Buy more disks. ;) XFS is not really optimised for single disk, metadata intensive, small file workloads. It scales by being able to keep lots of disks busy at the same time. Those algorithms don't map to single disk configs as efficiently as a filesystem that was specifically designed for optimal performance for these workloads (like reiserfs). We're working on making it better, but that takes time.... Cheers, Dave. -- Dave Chinner david@fromorbit.com