> io_uring is a tool for maximizing throughput not minimizing latency.

some features are explicitly designed to minimize latency. I'm thinking of the IORING_SETUP_IOPOLL and IORING_SETUP_SQPOLL flags for io_uring_setup .

I'm not making that up, the manpage says that: https://manpages.debian.org/unstable/liburing-dev/io_uring_s...