[andrewstuart]

I have a problem right now which is that it’s slow to copy large files from one side of the earth to the other. Is this the basis of a solution to that maybe?

[392]

No. Profile first. Make sure you've tried tweaking params like batch sizes.

[dpe82]

What do you think are the current problems contributing to your slow transfers?

[andrewstuart]

Window and buffer size is a problem on high latency links.

[dpe82]

Why do you suspect a user space implementation of TCP would improve those issues beyond existing kernel implementations?

[raggi]

not enough detail here to provide a good answer, but I can tell you explicitly that if you're using SMB you're likely not going to get good performance here even if your network stack is has tons of space to overcome bdp and congestion challenges.