[Bug 773770] rtpjitterbuffer: high CPU usage with low latency audio

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=773770

--- Comment #2 from Petr Kulhavy <brain at jikos.cz> ---
I agree, the 10000ms is completely artificial just to see the difference in CPU
usage when buffering and when not, which might indicate something. It doesn't
seem to really matter what the latency is, I do see the same CPU load with
10ms, with 100ms or with 10s.

I have been doing some analysis in the last few days but my valgrind and perf
profiling haven't really lead to anything so distinct between the good and bad
case, that would be worth mentioning. On one hand due to some "unknown"s and on
the other hand I'm suspecting the high CPU usage is not due to high computation
but due to cache misses and waiting for DRAM. But in both cases I'm seeing
about 20% L1 misses and 6% LL misses, so again nothing really distinct in one
case or the other.

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