Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752303AbaGDHWz (ORCPT ); Fri, 4 Jul 2014 03:22:55 -0400 Received: from mga09.intel.com ([134.134.136.24]:59609 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750924AbaGDHWy (ORCPT ); Fri, 4 Jul 2014 03:22:54 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,599,1400050800"; d="scan'208";a="538707984" Date: Fri, 4 Jul 2014 07:19:50 +0800 From: Yuyang Du To: Morten Rasmussen Cc: "linux-kernel@vger.kernel.org" , "linux-pm@vger.kernel.org" , "peterz@infradead.org" , "mingo@kernel.org" , "rjw@rjwysocki.net" , "vincent.guittot@linaro.org" , "daniel.lezcano@linaro.org" , "preeti@linux.vnet.ibm.com" , "Dietmar.Eggemann@arm.com" , "pjt@google.com" Subject: Re: [RFCv2 PATCH 00/23] sched: Energy cost model for energy-aware scheduling Message-ID: <20140703231950.GA4881@intel.com> References: <1404404770-323-1-git-send-email-morten.rasmussen@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1404404770-323-1-git-send-email-morten.rasmussen@arm.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Morten, On Fri, Jul 04, 2014 at 12:25:47AM +0800, Morten Rasmussen wrote: > * Note that these energy savings are _not_ representative of what can be > achieved on a true SMP platform where all cpus are equally > energy-efficient. There should be benefit for SMP platforms as well, > however, it will be smaller. > > The energy model led to consolidation of the short tasks on the A7 > cluster (more energy-efficient), while sysbench made use of all cpus as > the A7s didn't have sufficient compute capacity to handle the five > tasks. Looks like this patchset is mainly for big.LITTLE? And can the patchset actually replace Global Task Scheduling? Thanks, Yuyang -- 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/