From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754307AbaCEMnp (ORCPT ); Wed, 5 Mar 2014 07:43:45 -0500 Received: from v094114.home.net.pl ([79.96.170.134]:60961 "HELO v094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752250AbaCEMno (ORCPT ); Wed, 5 Mar 2014 07:43:44 -0500 From: "Rafael J. Wysocki" To: Fengguang Wu Cc: "Rafael J. Wysocki" , LKML , lkp@01.org Subject: Re: [ACPI / hotplug / PCI] 1b360f44d00: -80.9% vm-scalability.stddev Date: Wed, 05 Mar 2014 13:58:54 +0100 Message-ID: <1530281.asBBpMI1MW@vostro.rjw.lan> User-Agent: KMail/4.11.5 (Linux/3.13.0+; KDE/4.11.5; x86_64; ; ) In-Reply-To: <20140305082336.GD17109@localhost> References: <20140305082336.GD17109@localhost> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday, March 05, 2014 04:23:36 PM Fengguang Wu wrote: > Hi Rafael, Hi, > I don't know why but we are glad to find the below changes on commit Do I understand correcty that you mean you're seeing improvement? Either way, if the test below doesn't involve hotplug or device removal via sysfs, I have no explanation ... > 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 > -- > 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/ -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.