From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755356AbaEFUT6 (ORCPT ); Tue, 6 May 2014 16:19:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60666 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755240AbaEFUT4 (ORCPT ); Tue, 6 May 2014 16:19:56 -0400 Message-ID: <536943C9.4030502@redhat.com> Date: Tue, 06 May 2014 16:19:21 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Peter Zijlstra CC: Mike Galbraith , linux-kernel@vger.kernel.org, morten.rasmussen@arm.com, mingo@kernel.org, george.mccollister@gmail.com, ktkhai@parallels.com Subject: Re: [PATCH RFC/TEST] sched: make sync affine wakeups work References: <20140502004237.79dd3de6@annuminas.surriel.com> <1399011219.5233.55.camel@marge.simpson.net> <53633B81.1080403@redhat.com> <1399016273.5233.94.camel@marge.simpson.net> <536379D0.8070306@redhat.com> <1399030032.5233.142.camel@marge.simpson.net> <5363B793.9010208@redhat.com> <20140506115448.GH11096@twins.programming.kicks-ass.net> In-Reply-To: <20140506115448.GH11096@twins.programming.kicks-ass.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/06/2014 07:54 AM, Peter Zijlstra wrote: > On Fri, May 02, 2014 at 11:19:47AM -0400, Rik van Riel wrote: >> As an aside, it also looks like SD_BALANCE_WAKE is set on all domains >> of a NUMA system by default, so even the non-affine wakeup will end >> up looking for the lowest load NUMA node to start up on. > > I can't find it being set on anything by default. .flags = 1*SD_LOAD_BALANCE | 1*SD_BALANCE_NEWIDLE | 0*SD_BALANCE_EXEC | 0*SD_BALANCE_FORK | 0*SD_BALANCE_WAKE | 0*SD_WAKE_AFFINE | 0*SD_SHARE_CPUPOWER | 0*SD_SHARE_PKG_RESOURCES | 1*SD_SERIALIZE | 0*SD_PREFER_SIBLING | 1*SD_NUMA | sd_local_flags(level) static inline int sd_local_flags(int level) { if (sched_domains_numa_distance[level] > RECLAIM_DISTANCE) return 0; return SD_BALANCE_EXEC | SD_BALANCE_FORK | SD_WAKE_AFFINE; } -- All rights reversed