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GNU/Linux |
Debian 6.0.2(Squeeze) |
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perf_2.6.32-record(1) |
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perf-record − Run a command and record its profile into perf.data
perf
record [−e <EVENT> |
−−event=EVENT] [−l] [−a]
<command>
perf record [−e <EVENT> |
−−event=EVENT] [−l] [−a] —
<command> [<options>]
This command runs a command and gathers a performance counter profile from it, into perf.data − without displaying anything.
This file can then be inspected later on, using perf report.
<command>...
Any command you can specify in a shell.
−e, −−event=
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.
−a
System−wide collection.
−l
Scale counter values.
−p, −−pid=
Record events on existing pid.
−r, −−realtime=
Collect data with this RT SCHED_FIFO priority.
−A, −−append
Append to the output file to do incremental profiling.
−f, −−force
Overwrite existing data file.
−c, −−count=
Event period to sample.
−o, −−output=
Output file name.
−i, −−inherit
Child tasks inherit counters.
−F, −−freq=
Profile at this frequency.
−m, −−mmap−pages=
Number of mmap data pages.
−g, −−call−graph
Do call−graph (stack chain/backtrace) recording.
−v, −−verbose
Be more verbose (show counter open errors, etc).
−s, −−stat
Per thread counts.
−d, −−data
Sample addresses.
−n, −−no−samples
Don’t sample.
−R, −−raw−samples
Collect raw sample records from all opened counters (typically for tracepoint counters).
perf_2.6.32-stat(1), perf_2.6.32-list(1)
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perf_2.6.32-record(1) | |