Linux Kernel Journey

Feb 2, 2025 · Operations

Mastering Linux Performance with ftrace: Theory, Setup, and Real‑World Use Cases

This article explains how the built‑in Linux kernel tracer ftrace works, walks through its various tracers, shows how to configure and use it via debugfs, and demonstrates practical performance‑optimisation and fault‑diagnosis scenarios while comparing it with SystemTap and LTTng.