Hi Jeremy,
please have a look at Linpack and Stream results
http://perf-desktop.brq.redhat.com/LinpackAndStream/Red-Hat-Enterprise-Li...
and
http://perf-desktop.brq.redhat.com/LinpackAndStream/Red-Hat-Enterprise-Li...
We have collected /proc/sched_debug every 10 seconds - there are
""*scheddebug" files for every run. We are also collecting mpstat
statistics every 2 seconds.
For example during a test when 64 stream jobs were running in parallel
there are corresponding /proc/sched_debug logs:
4.6.0-0.rc5.git0.1.el7.x86_64/throughput-performance/Results-2016-Apr-28_14h01m32s/RawData/stream.affinityRun.064streams.loop01.scheddebug
<
http://perf-desktop.brq.redhat.com/LinpackAndStream/Red-Hat-Enterprise-Li...
4.6.0-0.rc5.git0.1.wastedcores.el7.x86_64/throughput-performance/Results-2016-Apr-29_15h37m17s/RawData/stream.affinityRun.064streams.loop01.scheddebug
<
http://perf-desktop.brq.redhat.com/LinpackAndStream/Red-Hat-Enterprise-Li...
However, we are not sure how to process these log files. Is there any tool
to do so or could you share some hints what to look for?
Thanks a lot!
Jirka
On Tue, May 3, 2016 at 4:18 PM, Jeremy Eder <jeder(a)redhat.com> wrote:
Yikes. 20% off...why? Do you have any system stats? Particularly
/proc/sched_debug collected at some interval.
On Mon, May 2, 2016 at 12:39 PM, Jirka Hladky <jhladky(a)redhat.com> wrote:
> Hi all,
>
> we have compared scheduler performance
> for kernel-4.6.0-0.rc5.git0.1.wastedcores
> against kernel-4.6.0-0.rc5.git0.1.el7.
>
> *Summary: *against all expectations* kernel-4.6.0-0.rc5.git0.1.wastedcores performs
on
> average 20% WORSE than the regular kernel. *
>
> Results for different servers:
>
> SPECjbb2005:
>
> - karkulka-02.lab.eng.brq.redhat.com-htON
>
<
http://perf-desktop.brq.redhat.com/SPECjbb/.vs./karkulka-02.lab.eng.brq.r...
> - kiff-01.cluster-qe.lab.eng.brq.redhat.com-htON
>
<
http://perf-desktop.brq.redhat.com/SPECjbb/.vs./kiff-01.cluster-qe.lab.en...
>
> SPECjvm2008:
>
> - karkulka-02.lab.eng.brq.redhat.com-htON
>
<
http://perf-desktop.brq.redhat.com/SPECjvm/.vs./karkulka-02.lab.eng.brq.r...
> - kiff-01.cluster-qe.lab.eng.brq.redhat.com-htON
>
<
http://perf-desktop.brq.redhat.com/SPECjvm/.vs./kiff-01.cluster-qe.lab.en...
>
> Linpack and Stream:
>
> - karkulka-02.lab.eng.brq.redhat.com-htON
>
<
http://perf-desktop.brq.redhat.com/LinpackAndStream/.vs./karkulka-02.lab....
> - kiff-01.cluster-qe.lab.eng.brq.redhat.com-htON
>
<
http://perf-desktop.brq.redhat.com/LinpackAndStream/.vs./kiff-01.cluster-...
>
> Any comments, questions, suggestions?
>
> Jirka and Kamil
>
> On Thu, Apr 28, 2016 at 12:25 AM, Jirka Hladky <jhladky(a)redhat.com>
> wrote:
>
>> Hi Jeremy,
>>
>> I have just read
>>
>>
http://www.i3s.unice.fr/~jplozi/wastedcores/files/extended_talk.pdf
>>
http://www.ece.ubc.ca/~sasha/papers/eurosys16-final29.pdf
>>
>> We will definitely test it and share the results here.
>>
>> Jirka
>>
>>
>>
--
-- Jeremy Eder