From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753898AbYAILgS (ORCPT ); Wed, 9 Jan 2008 06:36:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752189AbYAILgK (ORCPT ); Wed, 9 Jan 2008 06:36:10 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:49104 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751883AbYAILgI (ORCPT ); Wed, 9 Jan 2008 06:36:08 -0500 Date: Wed, 9 Jan 2008 12:35:07 +0100 From: Ingo Molnar To: "Siddha, Suresh B" , discuss@LessWatts.org, Linux-pm mailing list , Linux Kernel , Dipankar Sarma , venkatesh.pallipadi@intel.com, tglx@linutronix.de, Arjan van de Ven , Gautham R Shenoy , Chanda Sethia Subject: Re: Analysis of sched_mc_power_savings Message-ID: <20080109113507.GA29721@elte.hu> References: <20080108173815.GA7793@dirshya.in.ibm.com> <20080108212400.GA8903@linux-os.sc.intel.com> <20080109111302.GC7793@dirshya.in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080109111302.GC7793@dirshya.in.ibm.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Vaidyanathan Srinivasan wrote: > How do we take this technique to the next step where we can > consolidate short running jobs as well? Did you face any difficulty > biasing the CPU for short running jobs? are you sure your measurement tasks do not impact the measurement workload? If you use something like 'top' then try running it reniced to +19. (or perhaps even bound to a particular CPU, say #3, to make its impact isolated) Ingo