Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932695AbcC3I2U (ORCPT ); Wed, 30 Mar 2016 04:28:20 -0400 Received: from mga04.intel.com ([192.55.52.120]:18917 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753928AbcC3I2S (ORCPT ); Wed, 30 Mar 2016 04:28:18 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,415,1455004800"; d="scan'208";a="944311798" Date: Wed, 30 Mar 2016 08:45:06 +0800 From: Yuyang Du To: Steve Muckle Cc: Peter Zijlstra , Ingo Molnar , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Vincent Guittot , Morten Rasmussen , Dietmar Eggemann , Juri Lelli , Patrick Bellasi , Michael Turquette Subject: Re: [RFCv7 PATCH 00/10] sched: scheduler-driven CPU frequency selection Message-ID: <20160330004506.GB22689@intel.com> References: <1456190570-4475-1-git-send-email-smuckle@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1456190570-4475-1-git-send-email-smuckle@linaro.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1162 Lines: 36 Hi Steve, On Mon, Feb 22, 2016 at 05:22:40PM -0800, Steve Muckle wrote: > The number of times the busy > duration exceeds the period of the periodic workload (an "overrun") is > also recorded. Could you please explain more about overrun? > SCHED_OTHER workload: > wload parameters ondemand interactive sched > run period loops OR OH OR OH OR OH > 1 100 100 0 62.07% 0 100.02% 0 78.49% > 10 1000 10 0 21.80% 0 22.74% 0 72.56% > 1 10 1000 0 21.72% 0 63.08% 0 52.40% > 10 100 100 0 8.09% 0 15.53% 0 17.33% > 100 1000 10 0 1.83% 0 1.77% 0 0.29% > 6 33 300 0 15.32% 0 8.60% 0 17.34% > 66 333 30 0 0.79% 0 3.18% 0 12.26% > 4 10 1000 0 5.87% 0 10.21% 0 6.15% > 40 100 100 0 0.41% 0 0.04% 0 2.68% > 400 1000 10 0 0.42% 0 0.50% 0 1.22% > 5 9 1000 2 3.82% 1 6.10% 0 2.51% > 50 90 100 0 0.19% 0 0.05% 0 1.71% > 500 900 10 0 0.37% 0 0.38% 0 1.82% > 9 12 1000 6 1.79% 1 0.77% 0 0.26% > 90 120 100 0 0.16% 1 0.05% 0 0.49% > 900 1200 10 0 0.09% 0 0.26% 0 0.62% Could you please also explain what we can learn from the wload vs. OH/OR results? Or if you have already explained these questions before, could you please point to the links? Thank you. Yuyang