CPU Usage excessive. TSDemux->MPEG2->resize->mpeg4->tsm
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Hi All,
I am running a DVB->Transcode->MPEG4->stream solution and I am getting really bad CPU usage. 3659 root 20 0 386m 37m 9220 S 134 1.4 0:27.47 DVBStream According to top, its using 134% !... when no transcode is taking place (DVB->IP SEND) top reports 5% CPU usage. Is there a way to profile what is sucking the life out of the CPU ? (The machine is a Dual Core Athlon X2 when using VLC I can trancode/stream using 20% CPU) How can I profile the pipeline? Richard _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: CPU Usage excessive. TSDemux->MPEG2->resize->mpeg4->tsm
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Le vendredi 04 mai 2012 à 14:10 +0100, Richard a écrit :
> Hi All, Hi, > > I am running a DVB->Transcode->MPEG4->stream solution and I am getting > really bad CPU usage. > > 3659 root 20 0 386m 37m 9220 S 134 1.4 0:27.47 DVBStream > According to top, its using 134% !... when no transcode is taking > place (DVB->IP SEND) top reports 5% CPU usage. From my observation, this is the mpegvideoparse element that is using too much CPU for what it is doing. You can help us by confirming this observation. I came to that conclusion by running oprofile over my pipeline. The symbole that was using all the CPU was scan_for_start_code() within the mpegvideo parser. Let me know if that is the same issue, that would greatly help. Please report any useful information on the bug report, https://bugzilla.gnome.org/show_bug.cgi?id=672701 cheers, Nicolas _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: CPU Usage excessive. TSDemux->MPEG2->resize->mpeg4->tsm
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Is it deinterlacing? That takes quite a bit of cpu..... _______________________________________________ _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: CPU Usage excessive. TSDemux->MPEG2->resize->mpeg4->tsm
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Le vendredi 04 mai 2012 à 17:30 +0200, Andreas Tunek a écrit :
> > Is it deinterlacing? That takes quite a bit of cpu..... From the profile I have here, the parser is way ahead of the rest, there is clearly a bug. Nicolas _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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In reply to this post by Andreas Tunek-2
Hi All,
thanks... I attached the oprofile output in pastebin.. (unfortunately not using DEBUG ffmpeg libraries).. I am on that task now and praying I dont hit the link time reference problems with mismatching libraries. http://pastebin.com/9BYG48ia As to the deinterlace, I have tried with and without :P .. didnt make much difference. Richard On 4 May 2012 16:30, Andreas Tunek <[hidden email]> wrote: > > On May 4, 2012 5:24 PM, "Nicolas Dufresne" > <[hidden email]> wrote: >> >> Le vendredi 04 mai 2012 à 14:10 +0100, Richard a écrit : >> > Hi All, >> Hi, >> > >> > I am running a DVB->Transcode->MPEG4->stream solution and I am getting >> > really bad CPU usage. >> > >> > 3659 root 20 0 386m 37m 9220 S 134 1.4 0:27.47 DVBStream >> > According to top, its using 134% !... when no transcode is taking >> > place (DVB->IP SEND) top reports 5% CPU usage. >> >> From my observation, this is the mpegvideoparse element that is using >> too much CPU for what it is doing. You can help us by confirming this >> observation. I came to that conclusion by running oprofile over my >> pipeline. The symbole that was using all the CPU was >> scan_for_start_code() within the mpegvideo parser. >> >> Let me know if that is the same issue, that would greatly help. Please >> report any useful information on the bug report, >> https://bugzilla.gnome.org/show_bug.cgi?id=672701 >> >> cheers, >> Nicolas >> >> > > Is it deinterlacing? That takes quite a bit of cpu..... > > _______________________________________________ >> gstreamer-devel mailing list >> [hidden email] >> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel > > > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel > gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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Hi there,
http://pastebin.com/ZXEGFRes Oprofile logs in pastebin. The ffmpeg AVCodec seems to be the thirsty one. It features top of the list all of the time.. now I am trying to see why the kernel is using 20% Richard On 4 May 2012 16:54, Richard <[hidden email]> wrote: > Hi All, > > thanks... I attached the oprofile output in pastebin.. (unfortunately > not using DEBUG ffmpeg libraries).. I am on that task now and praying > I dont hit the link time reference problems with mismatching > libraries. > > http://pastebin.com/9BYG48ia > > As to the deinterlace, I have tried with and without :P .. didnt make > much difference. > > Richard > > On 4 May 2012 16:30, Andreas Tunek <[hidden email]> wrote: >> >> On May 4, 2012 5:24 PM, "Nicolas Dufresne" >> <[hidden email]> wrote: >>> >>> Le vendredi 04 mai 2012 à 14:10 +0100, Richard a écrit : >>> > Hi All, >>> Hi, >>> > >>> > I am running a DVB->Transcode->MPEG4->stream solution and I am getting >>> > really bad CPU usage. >>> > >>> > 3659 root 20 0 386m 37m 9220 S 134 1.4 0:27.47 DVBStream >>> > According to top, its using 134% !... when no transcode is taking >>> > place (DVB->IP SEND) top reports 5% CPU usage. >>> >>> From my observation, this is the mpegvideoparse element that is using >>> too much CPU for what it is doing. You can help us by confirming this >>> observation. I came to that conclusion by running oprofile over my >>> pipeline. The symbole that was using all the CPU was >>> scan_for_start_code() within the mpegvideo parser. >>> >>> Let me know if that is the same issue, that would greatly help. Please >>> report any useful information on the bug report, >>> https://bugzilla.gnome.org/show_bug.cgi?id=672701 >>> >>> cheers, >>> Nicolas >>> >>> >> >> Is it deinterlacing? That takes quite a bit of cpu..... >> >> _______________________________________________ >>> gstreamer-devel mailing list >>> [hidden email] >>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel >> >> >> _______________________________________________ >> gstreamer-devel mailing list >> [hidden email] >> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel >> gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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Looking at the logs it showed alot of MAD continuity errors. this
looks like it was dumping the queue for the video too for some reason. Since I really dont care if the audio is passed through in the MPEG format I changed the pipeline. I changed DVB->Decodebin->stuff to DVB->MpegDemux->...... In my new pipeline the audio is not decoded, it is just passed through to the MpegTsMux, only video is re-encoded to MPEG4 Richard On 4 May 2012 20:14, Richard <[hidden email]> wrote: > Hi there, > > http://pastebin.com/ZXEGFRes > > Oprofile logs in pastebin. The ffmpeg AVCodec seems to be the thirsty > one. It features top of the list all of the time.. now I am trying to > see why the kernel is using 20% > > Richard > > > On 4 May 2012 16:54, Richard <[hidden email]> wrote: >> Hi All, >> >> thanks... I attached the oprofile output in pastebin.. (unfortunately >> not using DEBUG ffmpeg libraries).. I am on that task now and praying >> I dont hit the link time reference problems with mismatching >> libraries. >> >> http://pastebin.com/9BYG48ia >> >> As to the deinterlace, I have tried with and without :P .. didnt make >> much difference. >> >> Richard >> >> On 4 May 2012 16:30, Andreas Tunek <[hidden email]> wrote: >>> >>> On May 4, 2012 5:24 PM, "Nicolas Dufresne" >>> <[hidden email]> wrote: >>>> >>>> Le vendredi 04 mai 2012 à 14:10 +0100, Richard a écrit : >>>> > Hi All, >>>> Hi, >>>> > >>>> > I am running a DVB->Transcode->MPEG4->stream solution and I am getting >>>> > really bad CPU usage. >>>> > >>>> > 3659 root 20 0 386m 37m 9220 S 134 1.4 0:27.47 DVBStream >>>> > According to top, its using 134% !... when no transcode is taking >>>> > place (DVB->IP SEND) top reports 5% CPU usage. >>>> >>>> From my observation, this is the mpegvideoparse element that is using >>>> too much CPU for what it is doing. You can help us by confirming this >>>> observation. I came to that conclusion by running oprofile over my >>>> pipeline. The symbole that was using all the CPU was >>>> scan_for_start_code() within the mpegvideo parser. >>>> >>>> Let me know if that is the same issue, that would greatly help. Please >>>> report any useful information on the bug report, >>>> https://bugzilla.gnome.org/show_bug.cgi?id=672701 >>>> >>>> cheers, >>>> Nicolas >>>> >>>> >>> >>> Is it deinterlacing? That takes quite a bit of cpu..... >>> >>> _______________________________________________ >>>> gstreamer-devel mailing list >>>> [hidden email] >>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel >>> >>> >>> _______________________________________________ >>> gstreamer-devel mailing list >>> [hidden email] >>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel >>> gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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