[leshow]

Do you have any good resources for UDP tuning?

[sophacles]

I have gotten quite a bit of mileage out of this slide deck: https://events.static.linuxfound.org/sites/events/files/slid...

It's older so some details have changed over time, but the concepts are still relevant. It also has a lot of useful search terms to get you started.

[BitPirate]

The typical painpoint is the low maximum buffer sizes.

net.core.rmem_max net.core.wmem_max

e.g. wireguard-go will hit those limits of not executed with CAP_NET_ADMIN.