Wouldn't that be a sign of dropping too much, in contrast to your previous post suggesting it wouldn't drop enough?
In practice, statistical multiplexing works just fine with fq_codel, and you do in fact get more throughput with multiple flows in those cases where a single flow fails to each adequate utilisation. Additionally, utilisation below 100% is really characteristic of Reno on any worthwhile AQM queue and significant RTT. Other TCPs, particularly CUBIC and Westwood+, do rather better. - Jonathan Morton
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