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.

$Id: README,v 1.1.1.1 2004/05/18 01:50:44 kgibbs Exp $

--------------------

20/08/2014:	Anna-Kaisa Pietilainen <[email protected]>

		Adding a reverse thread mode where client can request 
		the server to send data to the client (-E, --reverse) and 
		a NAT travelsal flag that makes the server to reuse 
		the incoming socket for downlink testing (-2, --nat).

  iperf -c foo.bar.edu [-L port] -r  (run trade-off test using separate sockets (local port to receive is -L port or -p port or default port))
  iperf -c foo.bar.edu -2 -r         (run trade-off test over the client initiated socket)
  iperf -c foo.bar.edu [-L port] -E  (ask server to do downlink test only over separate socket (local port to receive is -L port or -p port or default port)
  iperf -c foo.bar.edu -2 -E         (ask server to do downlink test over the client initiated socket)

24/08/2014:	Anna-Kaisa Pietilainen <[email protected]>

		JSON report style (-y j|J)