perf: latency dashboard is misleading

[marten-seemann]

The latency dashboard shows connection establishment latency + 1 round trip, and shows the ping latency in the same plot. ICMP Ping doesn't contain the additional 1 round trip, so it makes all other implementations look worse than they actually are.

Not ideal, but maybe a better way to visualize things is to plot measurement results in multiples of the round trip, and subtract the 1 round trip from our measurement results.

[mxinden]

I see your point.

I am hesitant to do any math beyond a simple boxplot on the data, as that would obfuscate details.

Instead I suggest to tackle the confusion with better documentation. We already have the line below. I think for each graph we should put the baseline (ping and iperf) into context.

show baseline - whether to display the baseline measurement, that is ping for latency and iperf for throughput: