From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161276AbcFBPkp (ORCPT ); Thu, 2 Jun 2016 11:40:45 -0400 Received: from foss.arm.com ([217.140.101.70]:46088 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932852AbcFBPkl (ORCPT ); Thu, 2 Jun 2016 11:40:41 -0400 Subject: Re: [RFC PATCH 0/3] Aggregate task utilization only on root cfs_rq To: Peter Zijlstra References: <1464809962-25814-1-git-send-email-dietmar.eggemann@arm.com> <20160601201005.GN3193@twins.programming.kicks-ass.net> Cc: linux-kernel@vger.kernel.org, Vincent Guittot , Ben Segall , Morten Rasmussen , Yuyang Du From: Dietmar Eggemann Message-ID: <57505375.4060009@arm.com> Date: Thu, 2 Jun 2016 16:40:37 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <20160601201005.GN3193@twins.programming.kicks-ass.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/06/16 21:10, Peter Zijlstra wrote: > On Wed, Jun 01, 2016 at 08:39:19PM +0100, Dietmar Eggemann wrote: >> This is an alternative approach to '[RFC PATCH v2] sched: reflect >> sched_entity movement into task_group's utilization' which requires >> '[RFC PATCH] sched: fix hierarchical order in rq->leaf_cfs_rq_list' > > Awesome, a 3rd alternative :-) Yeah, sorry, but at least it runs op tip/sched/core w/o any other PELT related changes. Moreover, it's less code changes compared to the reflect-thing. And Yuyang's implementation depended on the optimization of _update_load_avg() (1us->1ms) which IMHO turned out to be not working.