3 ms·
the RTT discussion was a little misleading. its true that slow start rates are entirely dependent on RTT...but eventually the sawtooth should reach the same ste
by convolvatron 6y ago
the RTT discussion was a little misleading. its true that slow start rates are entirely dependent on RTT...but eventually the sawtooth should reach the same steady state.
there is work that shows that higher RTT connection do statistically suffer a smaller fair share, but that's a subtler if related issue. actually, I really wish the author would have shown the sawtooth.
- toast0 6y agoAt some point, with increasing bandwidth and increasing RTT, you end up with your effective bandwidth capped by receive windows and/or send buffers. Cross country high def video might not be quite enough to hit that, but intercontinental high def video would be. Being closer means faster initial 'slow start', but also faster 'slow start' on congestion, which is why you get a bigger share.
- convolvatron 6y agosure. but thats really just a window being under the bandwidth delay product. the discussion makes it seem like you suffer an outright linear performance hit