From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933334AbXGYRXc (ORCPT ); Wed, 25 Jul 2007 13:23:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761124AbXGYRXY (ORCPT ); Wed, 25 Jul 2007 13:23:24 -0400 Received: from mga01.intel.com ([192.55.52.88]:21425 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754780AbXGYRXX (ORCPT ); Wed, 25 Jul 2007 13:23:23 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.16,581,1175497200"; d="scan'208";a="272614284" Date: Wed, 25 Jul 2007 10:23:14 -0700 (PDT) From: Tong Li X-X-Sender: tongli@tongli.jf.intel.com To: Ingo Molnar cc: linux-kernel@vger.kernel.org, Chris Snook Subject: Re: [RFC] scheduler: improve SMP fairness in CFS In-Reply-To: <20070725120358.GA30755@elte.hu> Message-ID: References: <20070725110159.GA15076@elte.hu> <20070725120358.GA30755@elte.hu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 25 Jul 2007, Ingo Molnar wrote: > they now nicely converte to the expected 80% long-term CPU usage. > > so, could you please try the patch below, does it work for you too? > Thanks for the patch. It doesn't work well on my 8-way box. Here's the output at two different times. It's also changing all the time. [time 1] 3717 tongli 20 0 7864 108 16 R 85 0.0 1:38.00 loop 3721 tongli 20 0 7864 108 16 R 85 0.0 1:37.51 loop 3723 tongli 20 0 7864 108 16 R 84 0.0 1:30.48 loop 3714 tongli 20 0 7864 108 16 R 83 0.0 1:33.25 loop 3720 tongli 20 0 7864 108 16 R 81 0.0 1:31.89 loop 3715 tongli 20 0 7864 108 16 R 78 0.0 1:36.38 loop 3719 tongli 20 0 7864 108 16 R 78 0.0 1:28.80 loop 3718 tongli 20 0 7864 108 16 R 78 0.0 1:33.84 loop 3722 tongli 20 0 7864 108 16 R 76 0.0 1:34.69 loop 3716 tongli 20 0 7864 108 16 R 70 0.0 1:33.15 loop [time 2] 3721 tongli 20 0 7864 108 16 R 91 0.0 1:44.67 loop 3720 tongli 20 0 7864 108 16 R 89 0.0 1:40.55 loop 3722 tongli 20 0 7864 108 16 R 86 0.0 1:41.40 loop 3723 tongli 20 0 7864 108 16 R 82 0.0 1:38.94 loop 3715 tongli 20 0 7864 108 16 R 82 0.0 1:43.09 loop 3717 tongli 20 0 7864 108 16 R 79 0.0 1:46.38 loop 3718 tongli 20 0 7864 108 16 R 79 0.0 1:40.72 loop 3714 tongli 20 0 7864 108 16 R 77 0.0 1:40.17 loop 3719 tongli 20 0 7864 108 16 R 73 0.0 1:35.41 loop 3716 tongli 20 0 7864 108 16 R 61 0.0 1:38.66 loop I'm running 2.6.23-rc1 with your patch on a two-socket quad-core system. Top refresh rate is the default 3s. tong