NetPIPE is a protocol independent performance tool that visually
represents the network performance under a variety of conditions.
It performs simple ping-pong tests, bouncing messages of increasing
size between two processes, whether across a network or within an
SMP system. Message sizes are chosen at regular intervals, and with
slight perturbations, to provide a complete test of the communication
system. Each data point involves many ping-pong tests to provide an
accurate timing. Latencies are calculated by dividing the round
trip time in half for small messages ( less 64 Bytes ).