Hi Dave, Thank you for your comment.
> On 03 Jul 2015, at 20:55, Dave Taht <[email protected]> wrote: > > " From each of these sets of measurements, the 10th and 90th > percentiles and the median value SHOULD be computed. For each > scenario, a graph can be generated, with the x-axis showing the end- > to-end delay and the y-axis the goodput. This graph provides part of > a better understanding of (1) the delay/goodput trade-off for a given > congestion control mechanism, and (2) how the goodput and average > queue size vary as a function of the traffic load." > > This is lame. Capturing *all* the data as in a CDF or an Winstien > ellipsis plot, across the entire range, is to be preferred when > engineering a system. > > 90th percentile is a very, very low bar to cross, most of the nasty > bufferbloat happens at the top end of the range. Packet crcs, as one > example, are measured out to what, one in 6 million? Would you drive a > car that had the steering wheel fail one time in 10 turns? > > as for medians, seven figure summaries, if you must... > > We have updated the above paragraph from : “ From each of these sets of measurements, the 10th and 90th percentiles and the median value SHOULD be computed. For each scenario, a graph can be generated, with the x-axis showing the end- to-end delay and the y-axis the goodput. This graph provides part of a better understanding of (1) the delay/goodput trade-off for a given congestion control mechanism, and (2) how the goodput and average queue size vary as a function of the traffic load. " to “ From each of these sets of measurements, the CDF of the considered metrics SHOULD be computed. For each scenario, the following graph may be generated: the x-axis shows the end-to-end delay, the y-axis the goodput and ellipses are computed such as detailed in [WINS2014]. This graph provides part of a better understanding of (1) the delay/ goodput trade-off for a given congestion control mechanism, and (2) how the goodput and average queue size vary as a function of the traffic load. […] [WINS2014] Winstein, K., "Transport Architectures for an Evolving Internet", PhD thesis, Massachusetts Institute of Technology , 2014. " Kind regards, Nicolas > > > -- > Dave Täht > worldwide bufferbloat report: > http://www.dslreports.com/speedtest/results/bufferbloat > And: > What will it take to vastly improve wifi for everyone? > https://plus.google.com/u/0/explore/makewififast > > _______________________________________________ > aqm mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/aqm _______________________________________________ aqm mailing list [email protected] https://www.ietf.org/mailman/listinfo/aqm
