I have a service that beats epoll with io_uring (it reads gre packets from one socket, and does some lookups/munging on the inner packet and re-encaps them to a

I have a service that beats epoll with io_uring (it reads gre packets from one socket, and does some lookups/munging on the inner packet and re-encaps them to a different mechanism and writes them back to a different socket). General usage for io_uring vs epoll is pretty comparable IIUC. It wouldn't surprise me if streams (e.g. tcp) end up being faster via io_uring and buffer registration though. Totally tangential - it looks like io_uring is evolving beyond just io and into an alternate syscall interface, which is pretty neat imho.