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Performance

Making software faster: profiling, GC tuning, runtimes, and real benchmarks.

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How to Capture Node.js GC Traces Without Guessing

Software Development

How to Capture Node.js GC Traces Without Guessing

Node.js gives you four different ways to watch the garbage collector work, from a single CLI flag to a dedicated GCProfiler class.

Your Container Is Running SerialGC and Nobody Told You

Your Container Is Running SerialGC and Nobody Told You

You tuned G1 flags for a week. Your pod has one CPU, which means the JVM quietly picked a single-threaded collector at startup and ignored every flag you set. Here is the OpenJDK source that made that decision.