Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756361Ab3GEBOH (ORCPT ); Thu, 4 Jul 2013 21:14:07 -0400 Received: from mga03.intel.com ([143.182.124.21]:15793 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750888Ab3GEBOG (ORCPT ); Thu, 4 Jul 2013 21:14:06 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,998,1363158000"; d="scan'208";a="326977990" Message-ID: <51D61D97.8060904@intel.com> Date: Fri, 05 Jul 2013 09:12:55 +0800 From: Alex Shi User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 MIME-Version: 1.0 To: Thomas Gleixner CC: Davidlohr Bueso , hpa@linux.intel.com, tim.c.chen@linux.intel.com, linux-kernel@vger.kernel.org, andi.kleen@intel.com, a.p.zijlstra@chello.nl, mingo@elte.hu Subject: Re: [URGENT rfc patch 0/3] tsc clocksource bug fix References: <1372916056-24301-1-git-send-email-alex.shi@intel.com> <1372961512.8728.32.camel@buesod1.americas.hpqcorp.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1665 Lines: 52 On 07/05/2013 04:27 AM, Thomas Gleixner wrote: >>>> We find some benchmarks drop a lot on tip/sched/core on many Intel boxes, > And that branch does NOT have that commit included. So how can you see > a regression on a branch caused by a commit NOT included into that > branch? > > The offending commit is in tip timers/core and not in tip > sched/core. What I'm wanted to say is, that we need a proper > description of problems and not some random association. > > It tricked you to assume, that I'm not able to figure it out myself :) > > See? These things are complex and subtle, so we need precise > descriptions and not some sloppy semi correct data. > > I'm well aware of the issue and with Peters help I got a reasonable > explanation for it. A proper fix is about to be sent out. > Ingo had merged your branch into sched/core. :) commit f9bed7021710a3e45c331f7d7781de914cc1b939 Merge: 7e76057 67dd331 Author: Ingo Molnar Date: Wed May 29 11:21:59 2013 +0200 Merge branch 'timers/urgent' ... commit 7d194f78bde64ec813c1ed8291181bdd61515e78 Merge: 0298bf7 1eaff67 Author: Ingo Molnar Date: Tue May 28 09:53:41 2013 +0200 Merge branch 'timers/core' commit 0298bf70644d7334bec16ae47f3aa58f4f883b59 Merge: cc662fa 2938d27 Author: Ingo Molnar Date: Tue May 28 09:49:51 2013 +0200 Merge branch 'timers/urgent' -- Thanks Alex -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/