The averaging period says more about how fast they expect min_rtt to change than how long it takes to calculate it. If the rtt is fairly stable, that measuremen

The averaging period says more about how fast they expect min_rtt to change than how long it takes to calculate it. If the rtt is fairly stable, that measurement could be accurate much sooner than 10s. Super short lived sessions can really only go faster with tricks like increasing the initcwnd. Anything longer than that, I'd expect bbr to work well.