From: Eric Sandeen Subject: Re: delalloc fragmenting files? Date: Mon, 05 Nov 2007 11:37:50 -0600 Message-ID: <472F54EE.9030904@redhat.com> References: <47225B1E.2060708@redhat.com> <20071026221938.GV3042@webber.adilger.int> <4728ED3B.1060407@redhat.com> <47291F62.3000008@gmail.com> <4729EEB2.9090406@redhat.com> <472A2384.2010001@redhat.com> <472AE644.1040102@gmail.com> <472B453F.8010608@redhat.com> <472E1114.7060206@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Andreas Dilger , ext4 development To: Alex Tomas Return-path: Received: from mx1.redhat.com ([66.187.233.31]:39692 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750999AbXKERh4 (ORCPT ); Mon, 5 Nov 2007 12:37:56 -0500 In-Reply-To: <472E1114.7060206@gmail.com> Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org Alex Tomas wrote: > thanks for the data. the attached patch should fix couple issues: > broken history output and policy in that smaller usable chunk to > be used. can you give it a spin, please? Hi Alex - This looks *much* better: First block: 100355 Last block: 2342657 Discontinuity: Block 30208 is at 133120 (was 130562) Discontinuity: Block 60928 is at 165891 (was 163839) Discontinuity: Block 90368 is at 197634 (was 195330) Discontinuity: Block 121856 is at 232448 (was 229121) Discontinuity: Block 150528 is at 263170 (was 261119) Discontinuity: Block 181504 is at 296963 (was 294145) Discontinuity: Block 210944 is at 328706 (was 326402) Discontinuity: Block 241664 is at 361474 (was 359425) Discontinuity: Block 272896 is at 395264 (was 392705) Discontinuity: Block 303360 is at 427010 (was 425727) Discontinuity: Block 334080 is at 459778 (was 457729) Discontinuity: Block 365568 is at 493568 (was 491265) Discontinuity: Block 395264 is at 525314 (was 523263) Discontinuity: Block 426240 is at 558082 (was 556289) .... for an 8192x1M (8G) buffered dd, I now get 88 extents, in order. Do you want the mballoc history? Now I can try some multithreaded tests :) Thanks, -Eric > thanks, Alex