Scroll to navigation

PERF_5.10(1) perf Manual PERF_5.10(1)

NAME

perf - Performance analysis tools for Linux

SYNOPSIS

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

OPTIONS

-h, --help

Run perf help command.

-v, --version

Display perf version.

-vv

Print the compiled-in status of libraries.

--exec-path

Display or set exec path.

--html-path

Display html documentation path.

-p, --paginate

Set up pager.

--no-pager

Do not set pager.

--buildid-dir

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

--list-cmds

List the most commonly used perf commands.

--list-opts

List available perf options.

--debugfs-dir

Set debugfs directory or set environment variable PERF_DEBUGFS_DIR.

--debug

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

DESCRIPTION

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.

SEE ALSO

perf-stat(1), perf-top(1), perf-record(1), perf-report(1), perf-list(1)

2020-12-22 perf