From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267889AbUHKCsI (ORCPT ); Tue, 10 Aug 2004 22:48:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267888AbUHKCsI (ORCPT ); Tue, 10 Aug 2004 22:48:08 -0400 Received: from gizmo06bw.bigpond.com ([144.140.70.41]:10905 "HELO gizmo06bw.bigpond.com") by vger.kernel.org with SMTP id S267890AbUHKCsC (ORCPT ); Tue, 10 Aug 2004 22:48:02 -0400 Message-ID: <411988DF.9010308@bigpond.net.au> Date: Wed, 11 Aug 2004 12:47:59 +1000 From: Peter Williams User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 X-Accept-Language: en-us, en MIME-Version: 1.0 To: spaminos-ker@yahoo.com CC: William Lee Irwin III , linux-kernel@vger.kernel.org Subject: Re: Scheduler fairness problem on 2.6 series (Attn: Nick Piggin and others) References: <20040811010116.GL11200@holomorphy.com> <20040811022143.4892.qmail@web13910.mail.yahoo.com> <20040811022345.GN11200@holomorphy.com> <41198859.7050807@bigpond.net.au> In-Reply-To: <41198859.7050807@bigpond.net.au> 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 Peter Williams wrote: > William Lee Irwin III wrote: > >> On Tue, Aug 10, 2004 at 07:21:43PM -0700, spaminos-ker@yahoo.com wrote: >> >>> I am not very familiar with all the parameters, so I just kept the >>> defaults >>> Anything else I could try? >>> Nicolas >> >> >> >> No. It appeared that the SPA bits had sufficient fairness in them to >> pass this test but apparently not quite enough. >> > > The interactive bonus may interfere with fairness (the throughput bonus > should actually help it for tasks with equal nice) so you could try > setting max_ia_bonus to zero (and possibly increasing max_tpt_bonus). > With "eb" mode this should still give good interactive response but > expect interactive response to suffer a little in "pb" mode however > renicing the X server to a negative value should help. I should also have mentioned that fiddling with the promotion interval may help. Peter -- Peter Williams pwil3058@bigpond.net.au "Learning, n. The kind of ignorance distinguishing the studious." -- Ambrose Bierce