Linux Kernel Journey

Sep 27, 2024 · Fundamentals

Understanding eBPF Ringbuf: Design, API, and Comparison

The article explains the motivation, design, and API of the new multi‑producer single‑consumer eBPF Ring Buffer, compares it with perf buffers and other alternatives, and provides complete BPF and userspace code examples demonstrating reservation, commit, and polling of events while preserving ordering across CPUs.