perf-record.txt 920 字节
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perf-record(1)
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==============
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NAME
----
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perf-record - Run a command and record its profile into perf.data
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SYNOPSIS
--------
[verse]
'perf record' [-e <EVENT> | --event=EVENT] [-l] [-a] <command>
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'perf record' [-e <EVENT> | --event=EVENT] [-l] [-a] -- <command> [<options>]
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DESCRIPTION
-----------
This command runs a command and gathers a performance counter profile
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from it, into perf.data - without displaying anything.
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This file can then be inspected later on, using 'perf report'.


OPTIONS
-------
<command>...::
	Any command you can specify in a shell.

-e::
--event=::
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	Select the PMU event. Selection can be a symbolic event name
	(use 'perf list' to list all events) or a raw PMU
	event (eventsel+umask) in the form of rNNN where NNN is a
	 hexadecimal event descriptor.
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-a::
        system-wide collection

-l::
        scale counter values

SEE ALSO
--------
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linkperf:perf-stat[1], linkperf:perf-list[1]