JVM performance tuning - GC optimization, profiling, memory analysis, benchmarking

Java Performance Skill Optimize JVM performance through profiling, GC tuning, and memory analysis. Overview This skill covers JVM performance optimization including garbage collection tuning, memory analysis, CPU profiling, and benchmarking with JMH. When to Use This Skill Use when you need to: Tune GC for low latency or throughput Profile CPU hotspots Analyze memory leaks Benchmark code performance Optimize container settings Quick Reference GC Presets Profiling Commands JMH Benchmark GC Comparison GC Latency Throughput Heap Size G1 Medium High 4 32GB ZGC Very Low Medium 8GB 16TB Shenandoah Very Low Medium 8GB+ Parallel High Very High Any Troubleshooting Problem Cause Solution GC thrashing Heap too small Increase heap High latency GC pauses Switch to ZGC Memory leak Object retention Heap dump + MAT CPU spikes Hot loops Profile + optimize Usage

java-performance