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 S933808AbcAZIIf (ORCPT <rfc822;w@1wt.eu>);
	Tue, 26 Jan 2016 03:08:35 -0500
Received: from mail-wm0-f51.google.com ([74.125.82.51]:37676 "EHLO
	mail-wm0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S932734AbcAZII0 (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Tue, 26 Jan 2016 03:08:26 -0500
Date: Tue, 26 Jan 2016 09:08:22 +0100
From: Ingo Molnar <mingo@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>, lkml <linux-kernel@vger.kernel.org>,
        David Ahern <dsahern@gmail.com>, Namhyung Kim <namhyung@kernel.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: 'perf stat --repeat N' oddity/regression
Message-ID: <20160126080822.GA7970@gmail.com>
References: <1450629119-508-1-git-send-email-jolsa@kernel.org>
 <20160112112341.GB26496@gmail.com>
 <20160112142956.GU18367@kernel.org>
 <20160113104254.GA9854@gmail.com>
 <20160125182206.GA11648@gmail.com>
 <20160125183511.GA24981@gmail.com>
 <20160125194333.GA22501@kernel.org>
 <20160125194838.GB22501@kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <20160125194838.GB22501@kernel.org>
User-Agent: Mutt/1.5.23 (2014-03-12)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Em Mon, Jan 25, 2016 at 04:43:33PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Mon, Jan 25, 2016 at 07:35:11PM +0100, Ingo Molnar escreveu:
> > > 
> > > So it appears it broke somewhere between v4.0 and v4.1, as the v4.0 install 
> > > displays:
> > > 
> > >     16,244,802,268      instructions               ( +- 23.01% )
> > > 
> > >        2.108676769 seconds time elapsed                                          ( +-  0.86% )
> > > 
> > > 
> > > [a few minutes later]
> > > 
> > > Bisected it down to:
> > 
> > Mel Gorman reported this and Jiri provided a patch that Mel tested and
> > verified that it fixed, checking where it is sitting now...
> 
> I already sent it your way, its:
> 
>     198 N C 01/21 Arnaldo Carvalh (1.4K) ├─>[PATCH 06/16] perf stat: Do not clean event's private stats
> 
> Please pull my perf-core-for-mingo tag and you should get it, its an one
> liner.

Hm, are all of those changes fixes? If not then mind splitting them into a 
perf/urgent portion as well?

Thanks!

	Ingo