Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760065AbcJRLKa (ORCPT ); Tue, 18 Oct 2016 07:10:30 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:37529 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752107AbcJRLKU (ORCPT ); Tue, 18 Oct 2016 07:10:20 -0400 Date: Tue, 18 Oct 2016 13:10:17 +0200 From: Peter Zijlstra To: Matt Fleming Cc: Vincent Guittot , Wanpeng Li , Ingo Molnar , "linux-kernel@vger.kernel.org" , Mike Galbraith , Yuyang Du , Dietmar Eggemann Subject: Re: [PATCH] sched/fair: Do not decay new task load on first enqueue Message-ID: <20161018111017.GY3142@twins.programming.kicks-ass.net> References: <20160923115808.2330-1-matt@codeblueprint.co.uk> <20160928101422.GR5016@twins.programming.kicks-ass.net> <20160928193731.GD16071@codeblueprint.co.uk> <20161010100107.GZ16071@codeblueprint.co.uk> <20161010173440.GA28945@linaro.org> <20161011102453.GA16071@codeblueprint.co.uk> <20161018102937.GI16071@codeblueprint.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161018102937.GI16071@codeblueprint.co.uk> User-Agent: Mutt/1.5.23.1 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 525 Lines: 13 On Tue, Oct 18, 2016 at 11:29:37AM +0100, Matt Fleming wrote: > On Tue, 11 Oct, at 11:24:53AM, Matt Fleming wrote: > > > > That's a lot more costly cross-DIE migrations. I think this patch is > > along the right lines, but there's something fishy happening on this > > box. > > I wasn't really able to track down why this machine regressed, and the > patch shows enough improvement for other boxes that I think it's worth > sticking in tip/sched/core. > I'm entirely lost as to which patch we're talking about by now ;-)