Date: Tue, 18 Oct 2011 18:52:54 +0200 From: "Hartmann, O." <ohartman@zedat.fu-berlin.de> To: Ivan Klymenko <fidaj@ukr.net> Cc: freebsd-performance@FreeBSD.org, Andriy Gapon <avg@FreeBSD.org> Subject: Re: ffmpeg & ULE Message-ID: <4E9DAEE6.9080608@zedat.fu-berlin.de> In-Reply-To: <20111018162609.1319eb44@nonamehost.> References: <4E9D4124.9000307@eenet.ee> <12913.3257120431$1318938804@news.gmane.org> <4E9D7880.1030308@FreeBSD.org> <20111018162609.1319eb44@nonamehost.>
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On 10/18/11 15:26, Ivan Klymenko wrote: > 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 Thanks a lot for those diagrams.
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