From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752046AbeBLUAj (ORCPT ); Mon, 12 Feb 2018 15:00:39 -0500 Received: from casper.infradead.org ([85.118.1.10]:39466 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750924AbeBLUAi (ORCPT ); Mon, 12 Feb 2018 15:00:38 -0500 Date: Mon, 12 Feb 2018 20:57:20 +0100 From: Peter Zijlstra To: Mike Galbraith Cc: Mel Gorman , Matt Fleming , LKML Subject: Re: [PATCH 3/4] sched/fair: Do not migrate on wake_affine_weight if weights are equal Message-ID: <20180212195720.GC25201@hirez.programming.kicks-ass.net> References: <20180212145857.8056-1-mgorman@techsingularity.net> <20180212145857.8056-4-mgorman@techsingularity.net> <20180212172926.GY25201@hirez.programming.kicks-ass.net> <1518462889.7104.78.camel@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1518462889.7104.78.camel@gmx.de> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 12, 2018 at 08:14:49PM +0100, Mike Galbraith wrote: > On Mon, 2018-02-12 at 18:29 +0100, Peter Zijlstra wrote: > > Except for sync wakeups, where you say, if everything else is equal, > > pull, which also makes sense, because sync says 'current' promises to go > > away. > > Tasks tend to not honor that promise.. a lot. Yes I know.. still its something and its a very small bias in this case.