Liangxu Linux

Jun 24, 2021 · Backend Development

When to Choose epoll LT vs ET? A Deep Dive into Linux Non‑Blocking I/O

This article explains the differences between epoll's level‑triggered (LT) and edge‑triggered (ET) modes, shows how to use epoll_create, epoll_ctl, and epoll_wait, provides complete C++ examples for read and write handling, and offers practical guidance on avoiding common pitfalls in high‑performance Linux network programming.