From owner-freebsd-performance@FreeBSD.ORG Tue Oct 18 15:28:07 2011 Return-Path: Delivered-To: freebsd-performance@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0CF521065674; Tue, 18 Oct 2011 15:28:07 +0000 (UTC) (envelope-from fidaj@ukr.net) Received: from fsm1.ukr.net (fsm1.ukr.net [195.214.192.120]) by mx1.freebsd.org (Postfix) with ESMTP id 7DDA18FC1F; Tue, 18 Oct 2011 15:28:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ukr.net; s=fsm; h=Content-Transfer-Encoding:Content-Type:Mime-Version:References:In-Reply-To:Message-ID:Subject:Cc:To:From:Date; bh=8Miw1VpwxXH/ooAx59h5S1sgDklMqkLReSNlTPxNGc4=; b=dlMUZxHzfy1uFuXa+7HqYB0ez9UyK5tmu0Utk5zzEvCkcu6IUEV6QRt9JyOoJK6GFGo9FC1i8lrI7JpLV3tu6ocvicEvY3TtlZ2JGUlk0Dc5PSIuw4+MNyuGLKNz+PVA5tuEIc6YwvkqvsW+4l3BWJh+AFvNDPtal+d0pz8A70Y=; Received: from [81.23.24.103] (helo=nonamehost.) by fsm1.ukr.net with esmtpsa ID 1RGBaG-000HLb-Ky ; Tue, 18 Oct 2011 18:28:05 +0300 Date: Tue, 18 Oct 2011 18:27:37 +0300 From: Ivan Klymenko To: Andriy Gapon Message-ID: <20111018182737.750ac7a5@nonamehost.> In-Reply-To: <4E9D9510.9050609@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> <20111018173817.12c3dd59@nonamehost.> <4E9D9510.9050609@FreeBSD.org> X-Mailer: Claws Mail 3.7.9 (GTK+ 2.22.1; amd64-portbld-freebsd9.0) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: freebsd-performance@FreeBSD.org Subject: Re: ffmpeg & ULE X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Oct 2011 15:28:07 -0000 =D0=92 Tue, 18 Oct 2011 18:02:40 +0300 Andriy Gapon =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > on 18/10/2011 17:38 Ivan Klymenko said the following: > > =D0=92 Tue, 18 Oct 2011 17:22:29 +0300 > > Andriy Gapon =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > >=20 > >> on 18/10/2011 17:17 Ivan Klymenko said the following: > >>> =D0=92 Tue, 18 Oct 2011 17:03:51 +0300 > >>> Andriy Gapon =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > >>> > >>>> on 18/10/2011 16:26 Ivan Klymenko said the following: > >>>>> =D0=92 Tue, 18 Oct 2011 16:00:48 +0300 > >>>>> Andriy Gapon =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > >>>>> > >>>>>> on 18/10/2011 14:30 Ivan Klymenko said the following: > >>>>>>> =D0=92 Tue, 18 Oct 2011 12:04:36 +0300 > >>>>>>> Urmas Lett =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > >>>>>>> > >>>>>>>> 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=3D305269#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. > >> > >=20 > > So how can I convince you to confirm that I am right? >=20 > 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. >=20 What tests should I do with ffmpeg?