io_uring bare minimum echo server

• uses an event loop created with io_uring
• uses liburing 0.3
• Linux 5.4 or higher needed. (Lower versions don't return the right amount of bytes read from io_uring_prep_readv in cqe->res).
• For much better performance, go here: https://github.com/frevib/io_uring-echo-server/tree/io-uring-feat-fast-poll

Install and run

make liburing

make io_uring_echo_server

./io_uring_echo_server [port_number]

compare with epoll echo server

https://github.com/frevib/epoll-echo-server

Benchmarks

https://github.com/CarterLi/io_uring-echo-server

Versions

v1.4

Fixed bug that massively overstated the performance.

v1.3

Use pre-allocated sqe->user_data instead of dynamically allocating memory.

v1.1

Fix memory leak.

v1.0

Working release.