select vs epoll

Qunar Tech Salon

Mar 10, 2021 · Backend Development

Deep Dive into epoll: Principles, Blocking, and I/O Multiplexing

This article provides an in‑depth exploration of Linux’s epoll mechanism, covering its blocking behavior, kernel‑level processing, NAPI optimization, comparisons with select/poll, and practical insights into I/O multiplexing, helping backend engineers understand performance characteristics and design efficient network services.