io_uring bare minimum echo server

• uses an event loop created with io_uring
• uses liburing HEAD https://github.com/axboe/liburing
• Linux 5.7 or higher with IORING_FEAT_FAST_POLL and IORING_OP_PROVIDE_BUFFERS required

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/frevib/io_uring-echo-server/blob/io-uring-feat-fast-poll/benchmarks/benchmarks.md

Versions

v1.6

• Use IORING_OP_PROVIDE_BUFFERS

v1.5

• Use IORING_FEAT_FAST_POLL, which increases performance a lot
• Remove all polling, this is now handled by IORING_FEAT_FAST_POLL

v1.4

Fix 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.