TCP ramps up it's speed fairly slowly, and backs off fairly drastically when it
is told (via ECN or a dropped packet) that it has hit the limit. As a result, a
single TCP session is not going to fully utilize a connection. There are people
who do large, high speed transfers over long distances o
Consider a connection to my ISP as being an empty water-pipe, and I only want
to measure the flow from the waterworks to me. In this case the waterworks is
Rogers in Toronto, and the numbers come from me measuring the link with the
Waveform bufferbloat tool.
The ISP promises me 1 Gbit/s of wat