perf - Performance analysis tools for Linux
perf [--version] [--help] COMMAND [ARGS]
Performance counters for Linux are a new kernel-based subsystem that
provide a framework for all things performance analysis. It covers
hardware level (CPU/PMU, Performance Monitoring Unit) features and
software features (software counters, tracepoints) as well.
perf-stat(1), perf-top(1), perf-record(1), perf-report(1), perf-list(1)