Messages in this thread | | | Date | Wed, 5 Mar 2014 20:49:13 +0800 | From | Fengguang Wu <> | Subject | Re: [ACPI / hotplug / PCI] 1b360f44d00: -80.9% vm-scalability.stddev |
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On Wed, Mar 05, 2014 at 01:58:54PM +0100, Rafael J. Wysocki wrote: > 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?
Yes - the random multi-thread malloc test's deviation is reduced noticeably.
> Either way, if the test below doesn't involve hotplug or device removal via > sysfs, I have no explanation ...
OK.
Thanks, Fengguang
> > 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.
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