Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262011AbVD0U4O (ORCPT ); Wed, 27 Apr 2005 16:56:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262015AbVD0U4M (ORCPT ); Wed, 27 Apr 2005 16:56:12 -0400 Received: from mail.enyo.de ([212.9.189.167]:9110 "EHLO mail.enyo.de") by vger.kernel.org with ESMTP id S262011AbVD0U4D (ORCPT ); Wed, 27 Apr 2005 16:56:03 -0400 From: Florian Weimer To: "H. Peter Anvin" Cc: Andrew Morton , Linus Torvalds , magnus.damm@gmail.com, mason@suse.com, mike.taht@timesys.com, mpm@selenic.com, linux-kernel@vger.kernel.org, git@vger.kernel.org Subject: Re: Mercurial 0.3 vs git benchmarks References: <200504261138.46339.mason@suse.com> <20050426135606.7b21a2e2.akpm@osdl.org> <20050426155609.06e3ddcf.akpm@osdl.org> <426ED20B.9070706@zytor.com> <871x8wb6w4.fsf@deneb.enyo.de> <20050427151357.GH1087@cip.informatik.uni-erlangen.de> <426FDFCD.6000309@zytor.com> <20050427190144.GA28848@cip.informatik.uni-erlangen.de> Date: Wed, 27 Apr 2005 22:55:50 +0200 In-Reply-To: <20050427190144.GA28848@cip.informatik.uni-erlangen.de> (Thomas Glanzmann's message of "Wed, 27 Apr 2005 21:01:44 +0200") Message-ID: <874qds5489.fsf@deneb.enyo.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 845 Lines: 19 * Thomas Glanzmann: >> Directory hashing slows down operations that do linear sweeps through >> the filesystem reading every single file, simply because without >> dir_index, there is likely to be a correlation between inode order and >> directory order, whereas with dir_index, readdir() returns entries in >> hash order. > > thank you for the awareness training. Than mutt should be slower, too. > Maybe I should repeat that tests. Benchmarks are actually a bit tricky because as far as I can tell, once you hash the directories, they are tainted even if you mount your file system with ext2. - 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/