Unlocking Epoll: A Deep Dive into Linux’s High‑Performance I/O Mechanism

This article explores Linux’s epoll interface in depth, covering its core architecture, LT and ET trigger modes, underlying red‑black tree and linked‑list data structures, callback workflow, practical code examples, and best‑practice guidelines for high‑concurrency network applications.

ETI/O MultiplexingLT

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Unlocking Epoll: A Deep Dive into Linux’s High‑Performance I/O Mechanism

Liangxu Linux

Dec 29, 2024 · Backend Development

Master epoll: Boost Linux Server Performance with Event‑Driven I/O

This article explains how epoll works as Linux's high‑performance I/O multiplexer, compares it with select and poll, details its three‑step workflow, data structures, code examples, and the trade‑offs between level‑triggered and edge‑triggered modes for building scalable network servers.

ETEvent-drivenI/O Multiplexing

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Master epoll: Boost Linux Server Performance with Event‑Driven I/O