Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752234AbcJKTBP (ORCPT ); Tue, 11 Oct 2016 15:01:15 -0400 Received: from mail-wm0-f51.google.com ([74.125.82.51]:35478 "EHLO mail-wm0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751765AbcJKS7o (ORCPT ); Tue, 11 Oct 2016 14:59:44 -0400 Date: Tue, 11 Oct 2016 19:57:59 +0100 From: Matt Fleming To: Vincent Guittot Cc: Wanpeng Li , Peter Zijlstra , 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: <20161011185759.GD16071@codeblueprint.co.uk> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24+41 (02bc14ed1569) (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 551 Lines: 19 On Tue, 11 Oct, at 03:14:47PM, Vincent Guittot wrote: > > > > I see a regression, > > > > baseline: 2.41228 > > patched : 2.64528 (-9.7%) > > Just to be sure; By baseline you mean v4.8 ? Baseline is actually tip/sched/core commit 447976ef4fd0 ("sched/irqtime: Consolidate irqtime flushing code") but I could try out v4.8 instead if you'd prefer that. > > cat /tmp/trace.$1 | grep -E "wakeup_new.*comm=hackbench" | \ > > sed -e 's/.*target_cpu=//' | sort | uniq -c | awk '{print $1}' > > nice command to evaluate spread Thanks!