Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757288AbZCFAOc (ORCPT ); Thu, 5 Mar 2009 19:14:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755373AbZCFAOX (ORCPT ); Thu, 5 Mar 2009 19:14:23 -0500 Received: from casper.infradead.org ([85.118.1.10]:35628 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754741AbZCFAOW (ORCPT ); Thu, 5 Mar 2009 19:14:22 -0500 Date: Thu, 5 Mar 2009 16:14:51 -0800 From: Arjan van de Ven To: arun@linux.vnet.ibm.com Cc: linux-kernel@vger.kernel.org, linux-pm@lists.linux-foundation.org, a.p.zijlstra@chello.nl, ego@in.ibm.com, tglx@linutronix.de, mingo@elte.hu, andi@firstfloor.org, venkatesh.pallipadi@intel.com, vatsa@linux.vnet.ibm.com, svaidy@linux.vnet.ibm.com Subject: Re: [v2 PATCH 0/4] timers: framework for migration between CPU Message-ID: <20090305161451.0da40645@infradead.org> In-Reply-To: <20090304121249.GA9855@linux.vnet.ibm.com> References: <20090304121249.GA9855@linux.vnet.ibm.com> Organization: Intel X-Mailer: Claws Mail 3.7.0 (GTK+ 2.14.7; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 848 Lines: 22 On Wed, 4 Mar 2009 17:42:49 +0530 Arun R Bharadwaj wrote: > With the timers queued I measure the sleep state residency > for a period of 10s. > Next, I enable timer migration and measure the sleep state > residency period. is your table in seconds? Because realistically, at least on PC like hardware, doing work to get sleep times over a 100 / 200 msecs or so isn't going to save you any amount of measurable power anymore... -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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/