Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754269Ab0DEDoR (ORCPT ); Sun, 4 Apr 2010 23:44:17 -0400 Received: from mga06.intel.com ([134.134.136.21]:5968 "EHLO orsmga101.jf.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754029Ab0DEDoK (ORCPT ); Sun, 4 Apr 2010 23:44:10 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.51,364,1267430400"; d="scan'208";a="610207366" Message-ID: <4BB95C85.80205@linux.intel.com> Date: Sun, 04 Apr 2010 20:44:05 -0700 From: Arjan van de Ven User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: paulmck@linux.vnet.ibm.com CC: Dominik Brodowski , Alan Stern , linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar , Peter Zijlstra , Dmitry Torokhov Subject: Re: A few questions and issues with dynticks, NOHZ and powertop References: <20100403223328.GA4507@comet.dominikbrodowski.net> <20100404163924.GA18428@comet.dominikbrodowski.net> <20100404204725.GC2644@linux.vnet.ibm.com> <20100404233702.GA24102@linux.vnet.ibm.com> In-Reply-To: <20100404233702.GA24102@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 552 Lines: 10 > And you did mention offlining some CPUs above. The folloiwng patch > (from Lai Jiangshan) is needed to handle this case. btw on x86... don't offline CPUs if you want to save power.. it doesn't. (at least not during idle.. and when you're busy it might save power, but it won't save you energy normally) -- 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/