Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932467AbWAKTnj (ORCPT ); Wed, 11 Jan 2006 14:43:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932473AbWAKTnj (ORCPT ); Wed, 11 Jan 2006 14:43:39 -0500 Received: from smtp.osdl.org ([65.172.181.4]:54201 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S932467AbWAKTni (ORCPT ); Wed, 11 Jan 2006 14:43:38 -0500 Date: Wed, 11 Jan 2006 11:43:03 -0800 From: Andrew Morton To: cmm@us.ibm.com Cc: hch@lst.de, pbadari@us.ibm.com, sct@redhat.com, linux-kernel@vger.kernel.org, ext2-devel@lists.sourceforge.net Subject: Re: [PATCH 0/5] multiple block allocation to current ext3 Message-Id: <20060111114303.45540193.akpm@osdl.org> In-Reply-To: <1137007032.4395.24.camel@localhost.localdomain> References: <1112673094.14322.10.camel@mindpipe> <1112879303.2859.78.camel@sisko.sctweedie.blueyonder.co.uk> <1112917023.3787.75.camel@dyn318043bld.beaverton.ibm.com> <1112971236.1975.104.camel@sisko.sctweedie.blueyonder.co.uk> <1112983801.10605.32.camel@dyn318043bld.beaverton.ibm.com> <1113220089.2164.52.camel@sisko.sctweedie.blueyonder.co.uk> <1113244710.4413.38.camel@localhost.localdomain> <1113249435.2164.198.camel@sisko.sctweedie.blueyonder.co.uk> <1113288087.4319.49.camel@localhost.localdomain> <1113304715.2404.39.camel@sisko.sctweedie.blueyonder.co.uk> <1113348434.4125.54.camel@dyn318043bld.beaverton.ibm.com> <1113388142.3019.12.camel@sisko.sctweedie.blueyonder.co.uk> <1114207837.7339.50.camel@localhost.localdomain> <1114659912.16933.5.camel@mindpipe> <1114715665.18996.29.camel@localhost.localdomain> <1136935562.4901.41.camel@dyn9047017067.beaverton.ibm.com> <20060110212551.411a766d.akpm@osdl.org> <1137007032.4395.24.camel@localhost.localdomain> X-Mailer: Sylpheed version 1.0.4 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 783 Lines: 26 Mingming Cao wrote: > > # time ./filetst -b 1048576 -w -f /mnt/a > 2.6.14 2.6.15 > real 0m21.710s 0m25.773s > user 0m0.012s 0m0.004s > sys 0m14.569s 0m15.065s That's a big drop. Was it doing I/O, or was it all from pagecache? > I also found tiobench(sequential write test) and dbench has similar > regression between 2.6.14 and 2.6.15. Actually I found 2.6.15 rc2 > already has the regression. Is this a known issue? No, it is not known. > Anyway I will continue looking at the issue... Thanks. - 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/