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PERF(1) perf Manual PERF(1)

perf - Performance analysis tools for Linux

perf [--version] [--help] [OPTIONS] COMMAND [ARGS]

Setup debug variable (see list below) in value range (0, 10). Use like: --debug verbose # sets verbose = 1 --debug verbose=2 # sets verbose = 2
List of debug variables allowed to set:
  verbose          - general debug messages
  ordered-events   - ordered events object debug messages
  data-convert     - data convert command debug messages
  stderr           - write debug output (option -v) to stderr
                     in browser mode
  perf-event-open  - Print perf_event_open() arguments and
                     return value


Setup buildid cache directory. It has higher priority than buildid.dir config file option.

-v, --version

Display perf version.

-h, --help

Run perf help command.

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)
2019-11-12 perf 5.9-1