1. 根目录:
2. tools
3. perf
4. Documentation
5. perf.txt

perf(1)
=======

NAME
----
perf - Performance analysis tools for Linux

SYNOPSIS
--------
[verse]
'perf' [--version] [--help] [OPTIONS] COMMAND [ARGS]

OPTIONS
-------
--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

--buildid-dir::
	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.

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
--------
linkperf:perf-stat[1], linkperf:perf-top[1],
linkperf:perf-record[1], linkperf:perf-report[1],
linkperf:perf-list[1]