This is Iperf v2.0.0, a tool for measuring Internet bandwidth performance.
See the doc directory for more documentation.
Briefly:

  ./configure      -- configure for your machine
  make             -- compile Iperf
  make install     -- install Iperf, if desired

  iperf -s               (on machine "foo.bar.edu")
  iperf -c foo.bar.edu   (on some other machine)
  iperf -h               (for help screen)
  iperf -v               (for version information)

Copyright 1999, 2000, 2001, 2002, 2003, 2004
The Board of Trustees of the University of Illinois
All rights reserved
See UI License (doc/ui_license.html) for complete details.

SSM IGMP feature
----------------

You can try this feature like this:

. on a machine, run:
iperf -s -u -B 224.0.67.67 -i 1 -O 192.168.0.1 -X eth0
	
. on the 192.168.0.1 machine, run:
iperf -c 224.0.67.67 -u --ttl 5 -t 5