Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754404Ab2HOOjY (ORCPT ); Wed, 15 Aug 2012 10:39:24 -0400 Received: from casper.infradead.org ([85.118.1.10]:38415 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753140Ab2HOOjX convert rfc822-to-8bit (ORCPT ); Wed, 15 Aug 2012 10:39:23 -0400 Message-ID: <1345041548.31459.90.camel@twins> Subject: Re: [discussion]sched: a rough proposal to enable power saving in scheduler From: Peter Zijlstra To: Arjan van de Ven Cc: Alex Shi , Suresh Siddha , vincent.guittot@linaro.org, svaidy@linux.vnet.ibm.com, Ingo Molnar , Andrew Morton , Linus Torvalds , "linux-kernel@vger.kernel.org" , Thomas Gleixner , Paul Turner Date: Wed, 15 Aug 2012 16:39:08 +0200 In-Reply-To: <502BA7DC.7060907@linux.intel.com> References: <5028F12C.7080405@intel.com> <1345028738.31459.82.camel@twins> <502BA7DC.7060907@linux.intel.com> Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Mailer: Evolution 3.2.2- Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 810 Lines: 22 On Wed, 2012-08-15 at 06:45 -0700, Arjan van de Ven wrote: > On 8/15/2012 4:05 AM, Peter Zijlstra wrote: > > Yay, ideally we'd also provide a 3rd option: auto, which simply switches > > between the two based on AC/BAT, UPS > > nooooooo! > > anything but this. > if anyone thinks that AC/Battery matters for power sensitivity... they > need to go talk to a datacenter operator ;-) Servers in a datacenter have battery? > seriously, there are possibly many ways to have a power/performance > preference..,. but AC/battery is a very very poor one. > Do expand.. -- 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/