From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S933971AbcA0P6c (ORCPT <rfc822;w@1wt.eu>);
	Wed, 27 Jan 2016 10:58:32 -0500
Received: from mx2.suse.de ([195.135.220.15]:39342 "EHLO mx2.suse.de"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S932127AbcA0P6a (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Wed, 27 Jan 2016 10:58:30 -0500
Message-ID: <1453910307.3517.22.camel@suse.de>
Subject: Re: [PATCH] sched: Make schedstats a runtime tunable that is
 disabled by default v2
From: Mike Galbraith <mgalbraith@suse.de>
To: Mel Gorman <mgorman@techsingularity.net>,
        Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>, Matt Fleming <matt@codeblueprint.co.uk>,
        LKML <linux-kernel@vger.kernel.org>
Date: Wed, 27 Jan 2016 16:58:27 +0100
In-Reply-To: <1453908566-15211-1-git-send-email-mgorman@techsingularity.net>
References: <1453908566-15211-1-git-send-email-mgorman@techsingularity.net>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.16.5 
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Wed, 2016-01-27 at 15:29 +0000, Mel Gorman wrote:
> Changelog since V1
> o Introduce schedstat_enabled and address Ingo's feedback
> o More schedstat-only paths eliminated, particularly ttwu_stat

As mentioned offline, with the somewhat lighter than distro config of
my box, the patch delivered ~4% on cross core pipe-test loop time, and
~2% for tbench throughput.

	-Mike