Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753577AbYL3Cse (ORCPT ); Mon, 29 Dec 2008 21:48:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752189AbYL3Cs0 (ORCPT ); Mon, 29 Dec 2008 21:48:26 -0500 Received: from e28smtp09.in.ibm.com ([59.145.155.9]:50103 "EHLO e28smtp09.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751754AbYL3CsZ (ORCPT ); Mon, 29 Dec 2008 21:48:25 -0500 Date: Tue, 30 Dec 2008 08:18:19 +0530 From: Balbir Singh To: MinChan Kim Cc: Vaidyanathan Srinivasan , Linux Kernel , Suresh B Siddha , Venkatesh Pallipadi , Peter Zijlstra , Ingo Molnar , Dipankar Sarma , Vatsa , Gautham R Shenoy , Andi Kleen , David Collier-Brown , Tim Connors , Max Krasnyansky , Gregory Haskins , Pavel Machek , Andrew Morton Subject: Re: [PATCH v7 0/8] Tunable sched_mc_power_savings=n Message-ID: <20081230024819.GA23301@balbir.in.ibm.com> Reply-To: balbir@linux.vnet.ibm.com Mail-Followup-To: MinChan Kim , Vaidyanathan Srinivasan , Linux Kernel , Suresh B Siddha , Venkatesh Pallipadi , Peter Zijlstra , Ingo Molnar , Dipankar Sarma , Vatsa , Gautham R Shenoy , Andi Kleen , David Collier-Brown , Tim Connors , Max Krasnyansky , Gregory Haskins , Pavel Machek , Andrew Morton References: <20081218175313.29812.4781.stgit@drishya.in.ibm.com> <28c262360812291543ia322a13g6af854a685ce7632@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <28c262360812291543ia322a13g6af854a685ce7632@mail.gmail.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1764 Lines: 57 * MinChan Kim [2008-12-30 08:43:58]: > Hi, Vaidyanathan. > It's very late reponse. :( > > > Results: > > -------- > > > > Basic functionality of the code has not changed and the power vs > > performance benefits for kernbench are similar to the ones posted > > earlier. > > > > KERNBENCH Runs: make -j4 on a x86 8 core, dual socket quad core cpu > > package system > > > > SchedMC Run Time Package Idle Energy Power > > 0 81.68 52.83% 54.71% 1.00x J 1.00y W > > 1 80.70 36.62% 70.11% 0.95x J 0.96y W > > 2 74.95 19.53% 85.92% 0.90x J 0.98y W > > > > The results are marginally better than the previous version of the > > patch series which could be within the test variation. > > > > Please feel free to test, and let me know your comments and feedback. > > I will post more experimental results with various benchmarks. > > Your result is very interesting. > level 2 is more fast and efficient of power. > > What's major contributor to use less time in level 2? > I think it's cache bounce is less time than old. > Is right ? > Yes, correct > I want to test SCHED_MC but I don't know what you use to benchmark about power. > How do I get the data about 'Package, Idle, Energy, Power'? > Note, it is Package Idle (for both packages), it is a x86-64 8 core, dual socket, quad core box. It is not Package, Idle. For Energy and Power you need a means of measuring power like a meter. > -- > Kinds regards, > MinChan Kim > -- Balbir -- 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/