udpsrc performance

[Edward Hervey]

On Wed, 2012-07-04 at 00:01 -0700, parag.salasakar wrote:
> Hi
> 
> Thanks for the suggestion.
> 
> I tried it with udpsrc properties blocksize=50000 buffer-size=50000,
> but observed same issue (udpsrc taking 35-40%)
> 
> Does your suggestion mean that I have to modify source code for udpsrc
> plugin which allocates buffer-pool and re-use them?

  Yes

> 
> Regards,
> 
> Parag
> 
> On Mon, Jul 2, 2012 at 8:36 PM, Edward Hervey [via GStreamer-devel]
> <[hidden email]> wrote:
>         Hi, 
>         
>         On Mon, 2012-07-02 at 07:45 -0700, parag.salasakar wrote: 
>         > Hi 
>         > 
>         > I am trying to decode MPEG2TS bistream with following
>         pipeline 
>         
>           I am assuming this is GStreamer 0.10 
>         
>         > 
>         > gst-launch -v udpsrc port=5004 caps="application/x-rtp,
>         clock-rate=90000, 
>         > media=(string)video" ! gstrtpjitterbuffer ! queue !
>         rtpmp2tdepay ! 
>         > mpegtsdemux ! queue ! ffdec_mpegvideo ! videoscale !
>         ffmpegcolorspace ! 
>         > autovideosink on my DSP  platform 
>         > 
>         > However i noticed that when I try 
>         > 
>         > gst-launch -v udpsrc port=5004 caps="application/x-rtp,
>         clock-rate=90000, 
>         > media=(string)video" ! fakesink silent=1 
>         > 
>         > CPU utilization goes to 35% to 40% for 4 Mbps streams, which
>         sounds weired 
>         > to me (how can just udpsrc take 35% of CPU?) 
>         > AM I missing anything?
>           This is due to the overhead of creating/destroying plenty of
>         small 
>         GstBuffers. A solution would be to create a bufferpool and
>         re-use 
>         GstBuffers. 
>         
>             Edward 
>         
>         > Parag 
>         > 
>         > -- 
>         > View this message in context:
>         http://gstreamer-devel.966125.n4.nabble.com/udpsrc-performance-tp4655463.html
>         > Sent from the GStreamer-devel mailing list archive at
>         Nabble.com. 
>         > _______________________________________________ 
>         > 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
>         
>         
>         
>         ______________________________________________________________
>         If you reply to this email, your message will be added to the
>         discussion below:
>         http://gstreamer-devel.966125.n4.nabble.com/udpsrc-performance-tp4655463p4655464.html 
>         To unsubscribe from udpsrc performance, click here.
>         NAML 
> 
> 
> 
> ______________________________________________________________________
> View this message in context: Re: udpsrc performance
> Sent from the GStreamer-devel mailing list archive at Nabble.com.
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel