From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261977AbTH2XR3 (ORCPT ); Fri, 29 Aug 2003 19:17:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262041AbTH2XR2 (ORCPT ); Fri, 29 Aug 2003 19:17:28 -0400 Received: from adsl-63-194-239-202.dsl.lsan03.pacbell.net ([63.194.239.202]:49164 "EHLO mmp-linux.matchmail.com") by vger.kernel.org with ESMTP id S261977AbTH2XRZ (ORCPT ); Fri, 29 Aug 2003 19:17:25 -0400 Date: Fri, 29 Aug 2003 16:17:26 -0700 From: Mike Fedyk To: Ed Sweetman Cc: Alex Tomas , linux-kernel@vger.kernel.org, ext2-devel@lists.sourceforge.net Subject: Re: [Ext2-devel] Re: [RFC] extents support for EXT3 Message-ID: <20030829231726.GE3846@matchmail.com> Mail-Followup-To: Ed Sweetman , Alex Tomas , linux-kernel@vger.kernel.org, ext2-devel@lists.sourceforge.net References: <3F4F76A5.6020000@wmich.edu> <3F4F7D56.9040107@wmich.edu> <3F4F923F.9070207@wmich.edu> <3F4FAFA2.4080202@wmich.edu> <20030829213940.GC3846@matchmail.com> <3F4FD2BE.1020505@wmich.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3F4FD2BE.1020505@wmich.edu> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 29, 2003 at 06:25:02PM -0400, Ed Sweetman wrote: > you get no real slowdown as far as rough benchmarks are concerned, > perhaps with a microbenchmark you would see one and also, doesn't it > take up more space to save the extent info and such? Either way, all of > it's real benefits occur on large files. IIRC, if your blocks are contiguous, you can save as soon as soon as the file size goes above one block (witout extents, the first 12 blocks are pointed to by what? I forget... :-/ )