From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757208AbZILDXT (ORCPT ); Fri, 11 Sep 2009 23:23:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753457AbZILDXT (ORCPT ); Fri, 11 Sep 2009 23:23:19 -0400 Received: from casper.infradead.org ([85.118.1.10]:51279 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753202AbZILDXS (ORCPT ); Fri, 11 Sep 2009 23:23:18 -0400 Date: Sat, 12 Sep 2009 05:26:47 +0200 From: Arjan van de Ven To: Matthew Garrett Cc: linux-kernel@vger.kernel.org, lenb@kernel.org, mingo@elte.hu, akpm@linux-foundation.org, peterz@infradead.org, yanmin_zhang@linux.intel.com, torvalds@linux-foundation.org, jens.axboe@oracle.com Subject: Re: PATCH] cpuidle: A new variant of the menu governor to boost IO performance Message-ID: <20090912052647.3b6dcb78@infradead.org> In-Reply-To: <20090911220309.GB30989@srcf.ucam.org> References: <20090911174019.1ed02737@infradead.org> <20090911220309.GB30989@srcf.ucam.org> Organization: Intel X-Mailer: Claws Mail 3.7.2 (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 On Fri, 11 Sep 2009 23:03:09 +0100 Matthew Garrett wrote: > When you say that a bit more power was used, is that instantaneous > power draw or total power consumption over the run of the benchmark? > I'd have expected that completing it 50% faster and then going idle > would be a win overall. I meant power, not total energy :-) in terms of energy it's a win if you only do a fixed amount of work... > -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org