From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 28 Jun 2001 08:40:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 28 Jun 2001 08:40:12 -0400 Received: from picard.csihq.com ([204.17.222.1]:60800 "EHLO picard.csihq.com") by vger.kernel.org with ESMTP id ; Thu, 28 Jun 2001 08:40:02 -0400 Message-ID: <02bd01c0ffcf$6a85f150$e1de11cc@csihq.com> From: "Mike Black" To: "linux-kernel@vger.kernel.or" Cc: "raid" Subject: 2.2.6-pre6 ext3 Date: Thu, 28 Jun 2001 08:39:47 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 2.2.6-pre6 with ext3-2.4-0.0.8-246p5 System is a dual PIII/1Ghz 2G memory Qlogic 2100 Fibre Channel This is on a raid5 -- since both linux version and ext3 were changes not sure which is the cause yet. I'm waiting for resync to finish to try it on ext2. tiobench.pl --size 4000 Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/secd . -T File Block Num Seq Read Rand Read Seq Write Rand Write Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%) ------- ------ ------- --- ----------- ----------- ----------- ----------- . 4000 4096 1 69.09 73.2% 0.909 1.74% 25.75 94.8% 1.247 0.63% . 4000 4096 2 23.53 24.4% 1.001 1.63% 25.83 103.% 1.241 0.71% . 4000 4096 4 20.07 21.1% 1.157 2.04% 27.32 98.7% 1.233 1.00% Run #1: /usr/local/bin/tiotest -t 8 -f 500 -r 500 -b 4096 -d . -T Message from syslogd@yeti at Thu Jun 28 08:11:08 2001 ... yeti kernel: JBD: out of memory for journal_head System locked up hard. This same test was run multiple times on 2.2.5 without ext3 with much better results too: Done 6/7/01 Linux yeti 2.4.5 #2 SMP Sat May 26 07:13:52 EDT 2001 i686 unknown root@yeti:/usr5# tiobench.pl --size 4000 Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/secd . -T File Block Num Seq Read Rand Read Seq Write Rand Write Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%) ------- ------ ------- --- ----------- ----------- ----------- ----------- . 4000 4096 1 81.48 65.7% 0.499 0.54% 34.33 24.0% 1.481 1.51% . 4000 4096 2 77.10 77.2% 0.643 0.96% 33.04 23.6% 1.493 1.81% . 4000 4096 4 67.18 72.4% 0.797 1.39% 28.03 20.8% 1.494 1.94% . 4000 4096 8 58.29 66.2% 0.954 1.95% 24.89 19.8% 1.498 2.15% ________________________________________ Michael D. Black Principal Engineer mblack@csihq.com 321-676-2923,x203 http://www.csihq.com Computer Science Innovations http://www.csihq.com/~mike My home page FAX 321-676-2355