LuTiao Programming

Aug 11, 2026 · Operations

Why Relying Only on top and jstack Is Outdated: Embracing JDK Flight Recorder for Modern Java Troubleshooting

The article explains how JDK Flight Recorder (JFR) provides low‑overhead, continuous JVM event recording that outperforms traditional snapshot tools like top, jstack, and jmap, and offers practical commands and use‑cases for diagnosing CPU spikes, GC issues, thread contention, and latency problems in production Java services.