From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261967AbTJDJpl (ORCPT ); Sat, 4 Oct 2003 05:45:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261968AbTJDJpl (ORCPT ); Sat, 4 Oct 2003 05:45:41 -0400 Received: from c210-49-248-224.thoms1.vic.optusnet.com.au ([210.49.248.224]:36063 "EHLO mail.kolivas.org") by vger.kernel.org with ESMTP id S261967AbTJDJpj (ORCPT ); Sat, 4 Oct 2003 05:45:39 -0400 From: Con Kolivas To: Tom Sightler Subject: Re: Problems caused by scheduler tweaks in 2.6.0-test6? Date: Sat, 4 Oct 2003 19:50:44 +1000 User-Agent: KMail/1.5.4 Cc: LKML References: <1065188297.2660.17.camel@iso-8590-lx.zeusinc.com> <3F7E8EC0.7080008@cyberone.com.au> In-Reply-To: <3F7E8EC0.7080008@cyberone.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200310041950.44011.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 4 Oct 2003 19:11, Nick Piggin wrote: > Did you see this Con? > > By the way Tom, I have my scheduler patch available for test6 here: > http://www.kerneltrap.org/~npiggin/v15a/sched-rollup-v15a-260t6.gz > > Tom Sightler wrote: > >Hi All, > > > >Over the last few months I have tested many different scheduler tweaks > >mostly by testing the -mm kernels and also by applying Nick's patches > >against vanilla kernels. Up until recently I have been very happy with > >2.6.0-test5 with Nick's scheduler patches. > > > >Then I decided to try 2.6.0-test6 which seems to include a lot of Con's > >work and, while overall this seems nice, I'm having two relatively > >serious side effects that seem to be related to this inclusion. > > > >1. VMware performance varies wildly. I can't put my finger on this > >exact issue, but I have found as way to repeatably trigger bad > >performance. When running VMware in fullscreen mode, enable window > >animation and repeatedly minimize/maximize a window. Under 2.4.x and > >2.6.0-test5 w/Nick's patches this process runs reasonably smooth, > >although noticably slower than native speed. With stock 2.6.0-test6 > >after only a few seconds the minimize/maximize animiation slows to a > >complete crawl, take 20+ seconds to complete the minimize opertaion. > >I've tried tuning VMware with priorities but no luck. > > > >2. I also use Wine to run various Windows programs on occasion, > >particularly Outlook 2000 (mainly when attempting to help other running > >this application on Windows). The program runs fine, but always hangs > >on exit. I didn't originally think this was related to the scheduler, > >but interestingly, after applying Nick's patches to 2.6.0-test6, which > >back out Con's changes, this problem goes away. > > > >Is there any help out there for these type of issues? I know that many > >people seem to think these changes make life better, and I'll admidt > >that playing MP3's and DVD's is better with these changes, but I'd > >rather have my system preform well at other tasks. I would think having > >a way to turn off all the fancy interactivity detection would be ideal > >but there always seems to be opposition to adding tuning knobs. > > Please send a rundown of what top shows during these occurrences, and please define "hangs". I can't see how the scheduler tweaks can bring the machine down. Con