From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267724AbTGaThn (ORCPT ); Thu, 31 Jul 2003 15:37:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269036AbTGaThn (ORCPT ); Thu, 31 Jul 2003 15:37:43 -0400 Received: from imap.gmx.net ([213.165.64.20]:45779 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S267724AbTGaThm (ORCPT ); Thu, 31 Jul 2003 15:37:42 -0400 Date: Fri, 1 Aug 2003 01:07:41 +0530 From: Apurva Mehta To: Linux Kernel Mailing List Subject: Re: 2.6.0-test2-mm2 Message-ID: <20030731193741.GA1618@home.woodlands> Mail-Followup-To: Linux Kernel Mailing List References: <20030730223810.613755b4.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030730223810.613755b4.akpm@osdl.org> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Andrew Morton [31-07-2003 14:52]: > > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.0-test2/2.6.0-test2-mm2/ > > . CPU scheduler changes > > . Several changes to the synaptics and PS/2 drivers. People who have had > problems with keyboards and mice, please test and report. > > . Lots of other things, mainly bugfixes. I have noticed that while the system remains responsive when there is heavy CPU load alone, the unresponsiveness comes when there is heavy disk i/o. In light of this, I subjected my system to the following tests : 1) Untarred linux-2.6.0-test2.tar.bz2 (To create a stream of writes) 2) did a `find / -name "foobar" -print` as root (To create a stream of reads) 3) bzip2'ed a 30 MB file to 3.2 MB ( this ensures 100 % CPU usage). All the above were working on the same disk. As the above three things were going on, I was browsing, playing music on xmms, reading a pdf file in acrobat and generally switching between windows. I did the above test on both 2.6.0-test2-mm1 + O11int + O11.1int ( no O11.2 int) and on 2.6.0-test2-mm2. I find that mm1 + O11 patches are better than mm2. The music never skipped on mm1, while it did on mm2. Also, overall resposiveness of the various windows was better on mm1. However, when I did a `rpm --rebuilddb` on mm1 + O11int patches, I still got quite severe skipping toward the end of the 8 min process. I could not repeat the skipping again, even on the same kernel, because I guess there was not much rebuilding to do again.. If there are tools which I can use to produce helpful numbers, please let me know. I will post the required numbers ASAP. Also, if you have any other tests which I could perform to create heavy disk I/O, please let me know about that too. Regards, - Apurva