101 lines
1.7 KiB
Plaintext
101 lines
1.7 KiB
Plaintext
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perf-record(1)
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==============
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NAME
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----
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perf-record - Run a command and record its profile into perf.data
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SYNOPSIS
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--------
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[verse]
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'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
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-----------
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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'.
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OPTIONS
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-------
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<command>...::
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Any command you can specify in a shell.
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-e::
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--event=::
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Select the PMU event. Selection can be a symbolic event name
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(use 'perf list' to list all events) or a raw PMU
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event (eventsel+umask) in the form of rNNN where NNN is a
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hexadecimal event descriptor.
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-a::
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System-wide collection.
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-l::
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Scale counter values.
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-p::
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--pid=::
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Record events on existing pid.
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-r::
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--realtime=::
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Collect data with this RT SCHED_FIFO priority.
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-A::
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--append::
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Append to the output file to do incremental profiling.
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-f::
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--force::
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Overwrite existing data file.
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-c::
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--count=::
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Event period to sample.
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-o::
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--output=::
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Output file name.
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-i::
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--inherit::
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Child tasks inherit counters.
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-F::
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--freq=::
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Profile at this frequency.
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-m::
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--mmap-pages=::
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Number of mmap data pages.
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-g::
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--call-graph::
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Do call-graph (stack chain/backtrace) recording.
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-v::
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--verbose::
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Be more verbose (show counter open errors, etc).
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-s::
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--stat::
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Per thread counts.
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-d::
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--data::
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Sample addresses.
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-n::
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--no-samples::
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Don't sample.
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-R::
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--raw-samples::
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Collect raw sample records from all opened counters (typically for tracepoint counters).
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SEE ALSO
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--------
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linkperf:perf-stat[1], linkperf:perf-list[1]
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