From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753325AbaCEIXj (ORCPT ); Wed, 5 Mar 2014 03:23:39 -0500 Received: from mga14.intel.com ([143.182.124.37]:18069 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752331AbaCEIXi (ORCPT ); Wed, 5 Mar 2014 03:23:38 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,591,1389772800"; d="scan'208";a="486316984" Date: Wed, 5 Mar 2014 16:23:36 +0800 From: Fengguang Wu To: "Rafael J. Wysocki" Cc: LKML , lkp@01.org Subject: [ACPI / hotplug / PCI] 1b360f44d00: -80.9% vm-scalability.stddev Message-ID: <20140305082336.GD17109@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Rafael, I don't know why but we are glad to find the below changes on commit 1b360f44d009059e446532f29c1a889951e72667 ("ACPI / hotplug / PCI: Fix bridge removal race in handle_hotplug_event()") test case: brickland2/micro/vm-scalability/300s-anon-r-rand-mt d42f5da23400833 1b360f44d009059e446532f29 --------------- ------------------------- 3.54 ~164% -80.9% 0.68 ~37% TOTAL vm-scalability.stddev 14177 ~ 7% -22.1% 11040 ~ 7% TOTAL numa-meminfo.node0.SReclaimable 3543 ~ 7% -22.1% 2759 ~ 7% TOTAL numa-vmstat.node0.nr_slab_reclaimable 776196 ~ 6% -10.0% 698893 ~ 5% TOTAL numa-numastat.node2.local_node 776196 ~ 6% -10.0% 698894 ~ 5% TOTAL numa-numastat.node2.numa_hit The ~XX% numbers are stddev percent. The [+-]XX% is change percent. The below graph shows all samples collected during the bisect [*] bisect-good [O] bisect-bad ("bad" in the sense of bisect) In which you can see the stableness of the change and bisect. vm-scalability.stddev 16 ++--------------------------------------------------------------------+ | * | 14 ++ : | 12 ++ : | | :: | 10 ++ :: | | :: | 8 ++ :: | | : : | 6 ++ * : : | 4 ++ * * :: : : | | +: : + * : : : : | 2 ++*. *. .* : : * .*. + : : : .* : : | |+ * + * *. .* O *.*.*. .** O.**.O.* O: *.O.* O OO.* + : *.| 0 O+O-OO-O-O-O-OO-O-O---OO-O-O-O-OO-O---OO-*-O---OO-*-O------O-O-*-*----* Thanks, Fengguang