From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263429AbUHDKvT (ORCPT ); Wed, 4 Aug 2004 06:51:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264256AbUHDKvS (ORCPT ); Wed, 4 Aug 2004 06:51:18 -0400 Received: from smtp105.mail.sc5.yahoo.com ([66.163.169.225]:17514 "HELO smtp105.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S263429AbUHDKvR (ORCPT ); Wed, 4 Aug 2004 06:51:17 -0400 Message-ID: <4110BE9B.3040701@yahoo.com.au> Date: Wed, 04 Aug 2004 20:46:51 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040707 Debian/1.7-5 X-Accept-Language: en MIME-Version: 1.0 To: Ingo Molnar CC: Con Kolivas , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: 2.6.8-rc2-mm2 References: <20040802015527.49088944.akpm@osdl.org> <410E3CAF.6080305@kolivas.org> <410F3423.3020409@yahoo.com.au> <41109FCC.4070906@yahoo.com.au> <20040804103143.GA13072@elte.hu> In-Reply-To: <20040804103143.GA13072@elte.hu> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ingo Molnar wrote: > * Nick Piggin wrote: > > >>Also, basic interactivity in X is bad with the interactive sysctl set >>to 0 (is X supposed to be at nice 0?), however fairness is bad when >>interactive is 1. I'm not sure if this is an acceptable tradeoff - are >>you planning to fix it? > > > it also has clear interactivity problems when just running lots of CPU > hogs even with the default interactive=1 compute=0 setting. > > >>Increasing priority (negative nice) doesn't have much impact. -20 CPU >>hog only gets about double the CPU of a 0 priority CPU hog and only >>about 120% the CPU time of a nice -10 hog. > > > this is a property of the base scheduler as well. > *blush*. Well I shouldn't have singled out the staircase scheduler with this then. I think I would prefer your nonlinear ratios better though.