В Tue, 18 Oct 2011 18:02:40 +0300 Andriy Gapon <a...@freebsd.org> пишет:
> on 18/10/2011 17:38 Ivan Klymenko said the following: > > В Tue, 18 Oct 2011 17:22:29 +0300 > > Andriy Gapon <a...@freebsd.org> пишет: > > > >> on 18/10/2011 17:17 Ivan Klymenko said the following: > >>> В Tue, 18 Oct 2011 17:03:51 +0300 > >>> Andriy Gapon <a...@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 <a...@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.l...@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. > >> > >> That's a problem for me - I am not an expert in this area and have > >> very little experience doing formal performance testing. > >> > > > > So how can I convince you to confirm that I am right? > > Right about what? > I do not think that your postgresql tests (with about ~10% of maximal > difference for a particular configuration) provide any insight into > the reported ffmpeg results that started this topic. > What tests should I do with ffmpeg? _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "freebsd-performance-unsubscr...@freebsd.org"
