Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751863AbaJJHSy (ORCPT ); Fri, 10 Oct 2014 03:18:54 -0400 Received: from mail-oi0-f43.google.com ([209.85.218.43]:40290 "EHLO mail-oi0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751787AbaJJHSo (ORCPT ); Fri, 10 Oct 2014 03:18:44 -0400 MIME-Version: 1.0 In-Reply-To: References: <1412684017-16595-1-git-send-email-vincent.guittot@linaro.org> <1412684017-16595-7-git-send-email-vincent.guittot@linaro.org> <20141009121643.GQ4750@worktop.programming.kicks-ass.net> <20141009151820.GX10832@worktop.programming.kicks-ass.net> From: Vincent Guittot Date: Fri, 10 Oct 2014 09:18:23 +0200 Message-ID: Subject: Re: [PATCH v7 6/7] sched: replace capacity_factor by usage To: Peter Zijlstra Cc: Ingo Molnar , linux-kernel , Preeti U Murthy , Morten Rasmussen , Kamalesh Babulal , Russell King - ARM Linux , LAK , Rik van Riel , Mike Galbraith , Nicolas Pitre , "linaro-kernel@lists.linaro.org" , Daniel Lezcano , Dietmar Eggemann , Paul Turner , Benjamin Segall Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10 October 2014 09:17, Vincent Guittot wrote: > > yes i think it latter because it give a more stable view of the s/latter/matter/ > "overload state" and "have free capacity state" of the CPU. > One additional point is that the imbalance_pct will ensure that a > cpu/group will not been seen as having capacity if its available > capacity is only 1-5% which will generate spurious task migration > > I will add these details in the commit log and in a comment in the code -- 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/