For example, one router vendor drops packets for a brief interval every 30 sec. Periodic things are so prevalent it should be inexcusable to use periodic rate. These properties all combine to make Poisson a good choice. Given this sample definition, the draft then defines several statistics, including minimum, median, and various percentiles. Before presenting the metric itself, Matt described the current state of research on Treno and TCP congestion control.
Work continues on portability testing, documentation, and calibration.
A document on the interpretation of Treno outputs is also needed. With respect to calibration and timing, Van Jacobson noted the relationship between the length of Treno run needed and the accuracy of the clocks used. One of Treno's advantages is that, by using very modern congestion control techniques coming out of the work on SACK, it allows one to measure the bulk transfer capacity of the network even though the native TCP available on current hosts cannot achieve the measured rates. TCP congestion control algorithms as an unintended parameter of the measurement. Matt closed by noting several issues related to the Framework.