[Bug 772841] udpsrc: high CPU usage at high packet rate

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=772841

--- Comment #51 from Nicolas Dufresne (stormer) <nicolas at ndufresne.ca> ---
(In reply to Mathieu Duponchelle from comment #50)
> Thanks, I did observe with George's test application, where the throughput
> is improved, and the percentage of lost packets measurably goes down, I'm
> unsure why to be honest.

A wild guess, we are jumping between location in the object and endup with with
cash miss, as the loops are slower, we get preempted and the socket internal
buffer overrun. It's well known that we need to read the socket data asap to
avoid overrun, though you could in theory hide all this by using a larger
socket buffer. If it does improve thing with such a trivial patch, I'd say
let's merge it. Second though, the ttl removal is find, and it's in the
comment.

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