[klabb3]

In my experience QUIC is worse than TCP in a heterogeneous environment when optimizing for throughput. The added CPU usage from user space packet switching is a big factor for battery powered devices and congestion control lives its own life which often means it doesn’t get its fair share of bandwidth in the presence of TCP traffic.

I think QUIC can be awesome, and I hope it will. But I wouldn’t say we’re there yet. Low level kernel-adjacent things takes time. Networks are extremely heterogeneous and weird. Maybe in 5-10 years.

In the short-medium term, I think we could get much more bang for the buck if there was an easy way to improve the defaults on Linux and/or its distros.