thrulay, network capacity tester

The program thrulay is used to measure the capacity, delay, and other performance metrics of a network by sending a bulk TCP or UDP stream over it.

Special features of thrulay include:

• For TCP, ability to measure round-trip delay along with throughput
• For UDP, ability to measure
  • one-way delay, with quantiles
  • packet loss
  • packet duplication
  • reordering
• For UDP, the ability to send precisely positioned true Poisson streams (microsecond errors in sending times)
• Human- and machine-readable output (ready to be fed to gnuplot)