Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756354Ab3EGLF0 (ORCPT ); Tue, 7 May 2013 07:05:26 -0400 Received: from mga02.intel.com ([134.134.136.20]:2209 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755030Ab3EGLFZ (ORCPT ); Tue, 7 May 2013 07:05:25 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,627,1363158000"; d="scan'208";a="309499044" Message-ID: <5188DFEF.6010403@intel.com> Date: Tue, 07 May 2013 19:05:19 +0800 From: Alex Shi User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120912 Thunderbird/15.0.1 MIME-Version: 1.0 To: Morten Rasmussen , Peter Zijlstra CC: Paul Turner , Ingo Molnar , Thomas Gleixner , Andrew Morton , Borislav Petkov , Namhyung Kim , Mike Galbraith , Vincent Guittot , Preeti U Murthy , Viresh Kumar , LKML , Mel Gorman , Rik van Riel , Michael Wang Subject: Re: [PATCH v5 3/7] sched: set initial value of runnable avg for new forked task References: <1367804711-30308-1-git-send-email-alex.shi@intel.com> <1367804711-30308-4-git-send-email-alex.shi@intel.com> <5187760D.8060900@intel.com> <51886460.3020009@intel.com> <20130507095715.GE4068@e103034-lin> In-Reply-To: <20130507095715.GE4068@e103034-lin> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 582 Lines: 16 On 05/07/2013 05:57 PM, Morten Rasmussen wrote: > Agree. The tracked load of new tasks is often very unstable during first > couple of ms on loaded systems. I'm not sure if 1024 is the right > initial value. It may need to be larger. Maybe Peter can give a better value according to the experience on scheduler. :) -- Thanks Alex -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/