From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267882AbUHKCpy (ORCPT ); Tue, 10 Aug 2004 22:45:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267883AbUHKCpy (ORCPT ); Tue, 10 Aug 2004 22:45:54 -0400 Received: from gizmo07bw.bigpond.com ([144.140.70.42]:64229 "HELO gizmo07bw.bigpond.com") by vger.kernel.org with SMTP id S267882AbUHKCpw (ORCPT ); Tue, 10 Aug 2004 22:45:52 -0400 Message-ID: <41198859.7050807@bigpond.net.au> Date: Wed, 11 Aug 2004 12:45:45 +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> In-Reply-To: <20040811022345.GN11200@holomorphy.com> 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 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. Peter PS There's a primitive GUI available for setting the scheduler parameters at this is just a Python script with a Glade XML file (gcpuctl_hydra.glade) which needs to be in the same directory that you run the script from. -- Peter Williams pwil3058@bigpond.net.au "Learning, n. The kind of ignorance distinguishing the studious." -- Ambrose Bierce