ffmpeg & ULE

[Ivan Klymenko]

В Tue, 18 Oct 2011 17:03:51 +0300
Andriy Gapon <avg at FreeBSD.org> пишет:

> on 18/10/2011 16:26 Ivan Klymenko said the following:
> > В Tue, 18 Oct 2011 16:00:48 +0300
> > Andriy Gapon <avg at FreeBSD.org> пишет:
> > 
> >> on 18/10/2011 14:30 Ivan Klymenko said the following:
> >>> В Tue, 18 Oct 2011 12:04:36 +0300
> >>> Urmas Lett <urmas.lett at eenet.ee> пишет:
> >>>
> >>>> Hello.
> >>>>
> >>>> Why is ffmpeg -threads massively slower with ULE than 4BSD?
> >>>>
> >>>> ffmpeg preset veryfast with sched_bsd:
> >>>> real    1m49.407s
> >>>> user    6m53.932s
> >>>> sys     0m1.700s
> >>>>
> >>>> ffmpeg preset veryfast with sched_ule:
> >>>> real    2m52.711s
> >>>> user    6m50.310s
> >>>> sys     0m1.582s
> >>>>
> >>>> #uname -a
> >>>> FreeBSD 9.0-RC1 FreeBSD 9.0-RC1 #0: Mon Oct 17 20:32:29 EEST
> >>>>
> >>>>
> >>>
> >>> probably because you have a system processor with 2 cores...?
> >>> if yes - then use the 4BSD...it is better for the two cores...
> >>> IMHO
> >>
> >> Do you have any facts to substantiate your claim?
> >>
> > 
> > well, for example:
> > http://img37.imageshack.us/img37/9311/plotj.gif
> > http://img850.imageshack.us/img850/584/plot.gif
> 
> Not sure if two pictures is all that it takes.
> There is no description of hardware, OS versions, reproducibility of
> the results. Also you made a broader claim like "4BSD ... is better
> for the two cores", but the pictures demonstrate only that it is
> better (by ~10% ? I hate it when the axises do not start at zero)

http://forum.lissyara.su/viewtopic.php?p=305269#p305269

> only for transactions/s in postgresql sysbench.  There are other
> workloads and other important things to measure (like interactivity,
> etc).
> 
> Good benchmarking is a real science.
> 
Of course - I understand it.
Please tell me what tests should I do?
I will give you the test results for review.
I also give all the information about the hardware on which the tests
were conducted.