Date: Tue, 18 Oct 2011 17:38:17 +0300 From: Ivan Klymenko <fidaj@ukr.net> To: Andriy Gapon <avg@FreeBSD.org> Cc: freebsd-performance@FreeBSD.org Subject: Re: ffmpeg & ULE Message-ID: <20111018173817.12c3dd59@nonamehost.> In-Reply-To: <4E9D8BA5.3010501@FreeBSD.org> References: <4E9D4124.9000307@eenet.ee> <12913.3257120431$1318938804@news.gmane.org> <4E9D7880.1030308@FreeBSD.org> <20111018162609.1319eb44@nonamehost.> <4E9D8747.4020104@FreeBSD.org> <20111018171727.1fad2c7d@nonamehost.> <4E9D8BA5.3010501@FreeBSD.org>
index | next in thread | previous in thread | raw e-mail
В Tue, 18 Oct 2011 17:22:29 +0300 Andriy Gapon <avg@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 <avg@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@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@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?home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20111018173817.12c3dd59>