CPU Usage excessive. TSDemux->MPEG2->resize->mpeg4->tsmux->send

[Richard]

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 <tuxbox.guru at gmail.com> 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 <andreas.tunek at gmail.com> wrote:
>>
>> On May 4, 2012 5:24 PM, "Nicolas Dufresne"
>> <nicolas.dufresne at collabora.co.uk> 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.....
>>
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