Hi All
We've just released (officially at least) rtpreplicate, a java tool that you
can use to melt down your AG node :-)
rtpreplicate listens on a unicast or multicast address for rtp packets, and
forwards them to another unicast or multicast address. While passing through
the system, you can replicate (one or more) streams any number of times and
each stream is given a unique new ssrc id - so your receiving application sees
that many unique new sources. The system tries to highlight if the replicating
system itself becomes a bottleneck.
It listens for rtcp rr packets sent back to work out how well the system,
network and application under test are doing. This tends to show bugs in rtcp
RR generation as much as network or system performance issues! :-) But you can
also use other system tools to monitor cpu load, network buffers, etc. But
there are often complex things happening so be careful of how you interpret the
results.
There are also some canned h261 streams (in rtpdump format) of white-ish noise
at different bandwidths that could be used as the basis for a standard
benchmark. It should allow you to identify the performance gain (or loss) of a
system under test as you make changes, or compare two systems side-by-side
under reasonably identical conditions.
Feedback is always welcome.
Cheers,
Markus
Markus Buchhorn, ANU Internet Futures Group, |Ph: +61 2 61258810
[email protected], mail: Bldg #108 CS&IT |Fx: +61 2 61259805
Australian National University, Canberra 0200 Aust.|Mob: 0417 281429
