From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S272953AbTG3QDA (ORCPT ); Wed, 30 Jul 2003 12:03:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S272960AbTG3QC7 (ORCPT ); Wed, 30 Jul 2003 12:02:59 -0400 Received: from dsl2.external.hp.com ([192.25.206.7]:24585 "EHLO dsl2.external.hp.com") by vger.kernel.org with ESMTP id S272953AbTG3QCw (ORCPT ); Wed, 30 Jul 2003 12:02:52 -0400 Date: Wed, 30 Jul 2003 10:02:50 -0600 From: Grant Grundler To: "David S. Miller" Cc: Grant Grundler , ak@suse.de, alan@lxorguk.ukuu.org.uk, James.Bottomley@SteelEye.com, axboe@suse.de, suparna@in.ibm.com, linux-kernel@vger.kernel.org, alex_williamson@hp.com, bjorn_helgaas@hp.com Subject: Re: [RFC] block layer support for DMA IOMMU bypass mode II Message-ID: <20030730160250.GA16960@dsl2.external.hp.com> References: <20030708213427.39de0195.ak@suse.de> <20030708.150433.104048841.davem@redhat.com> <20030708222545.GC6787@dsl2.external.hp.com> <20030708.152314.115928676.davem@redhat.com> <20030723114006.GA28688@dsl2.external.hp.com> <20030728131513.5d4b1bd3.ak@suse.de> <20030730044256.GA1974@dsl2.external.hp.com> <20030729215118.13a5ac18.davem@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030729215118.13a5ac18.davem@redhat.com> User-Agent: Mutt/1.3.28i X-Home-Page: http://www.parisc-linux.org/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 29, 2003 at 09:51:18PM -0700, David S. Miller wrote: > Make an ext2 filesystem with 16K blocks :-) Executive summary: looks the same as previous 4k block/16k page w/VMERGE enabled. davem, I thought you were joking...I've submitted a oneliner to Ted Tyso to increase EXT2_MAX_BLOCK_LOG_SIZE to 64k. kudos to willy for quickly digging this up. 16k block size Works For Me (tm). appended is the re-aim-7 results for 16k page/block on ext2. grant iota:/mnt# PATH=$PATH:/mnt/usr/local/bin iota:/mnt# reaim -f /mnt/usr/local/share/reaim/workfile.new_dbase -s100 -e 500 -i 100 REAIM Workload Times are in seconds - Child times from tms.cstime and tms.cutime Num Parent Child Child Jobs per Jobs/min/ Std_dev Std_dev JTI Forked Time SysTime UTime Minute Child Time Percent 100 108.62 12.46 203.84 5689.35 56.89 4.59 4.46 95 200 217.51 25.29 408.11 5682.60 28.41 9.06 4.36 95 300 325.57 38.05 612.20 5694.63 18.98 12.01 3.85 96 400 434.89 50.67 817.90 5684.16 14.21 15.60 3.75 96 500 545.89 65.74 1024.75 5660.51 11.32 29.45 5.72 94 Max Jobs per Minute 5694.63 iota:/mnt#