Netperf is a benchmark that can be used to measure the performance of
many different types of networking.  It provides tests for both
unidirectional throughput, and end-to-end latency.  The environments
currently measureable by netperf include:

  o TCP and UDP via BSD Sockets
  o DLPI
  o UNIX Domain Sockets
  o Fore ATM API
  o HP HiPPI Link Level Access

Note that, though it is written and maintained by an HP employee (Rick
Jones), Netperf is not an official HP product, and its use is in no way
supported by HP.

  o <http://www.netperf.org/netperf/NetperfPage.html>