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PERF_4.19(1) perf Manual PERF_4.19(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


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)

2018-11-27 perf