Layered diagram of kernel submission and completion rings for async I/O.

Mastering io_uring vs epoll: A Deep Dive into Linux Async I/O Architectures

Compare Linux’s two dominant async I/O architectures, io_uring and epoll, with kernel internals, real benchmarks, and patterns drawn from production systems.

September 2, 2026 · 11 min · 2193 words · martinuke0
Layered diagram contrasting epoll's readiness-based loop with io_uring's submission and completion queues.

Architecting Async I/O with io_uring vs. epoll: A Deep Dive into Linux Performance Models

Compare io_uring and epoll as Linux async I/O architectures, covering kernel internals, syscall costs, and the production patterns where each one wins.

September 1, 2026 · 9 min · 1866 words · martinuke0
Feedback