Jmh
Write Java microbenchmarks with JMH (Java Microbenchmark Harness) that produce trustworthy numbers — not numbers distorted by JIT dead-code elimination, constant folding, insufficient warmup, or single-fork JIT contamination. Use this skill whenever the user writes `@Benchmark`, mentions JMH, microbenchmark, throughput measurement, latency measurement, or compares two implementations performance-…
Async Profiler
Profile JVM applications with async-profiler — sampling-based CPU, allocation, lock, wall-clock, and hardware-counter profiling that produces flame graphs, JFR, and pprof. Use this skill whenever the user investigates JVM performance, mentions hot methods or hot paths, asks about flame graphs, JFR, async-profiler, asprof, libasyncProfiler, jfrconv, or AsyncGetCallTrace, debugs allocation pressure…