ophelp man page

ophelp ā€” list OProfile events


ophelp [ options ] [event name]


By default, ophelp lists the available performance counter options. If you give it a symbolic event name, it will return the hardware value (e.g. "ophelp DATA_MEM_REFS").


--cpu-type / -c

Show the events for the given numerical CPU type.

--get-cpu-type / -r

Show the symbolic CPU name.

--get-default-event / -d

Show the default event for the specified CPU type.

--check-events / -e [events]

Check the given space-separated event descriptions for validity. If the events are valid, show which pmu counter each event would be assigned to.

--callgraph [callgraph_depth]

Use the callgraph depth to compute the higher minimum sampling intervals for the events.

--unit-mask / -u [event]

Show the default unit mask for the given event.

--extra-mask / -E [event]

Show the extra unit mask for given event.

--xml / -X

List events in XML format.

--help / -? / --usage

Show help message.

--version / -v

Show version.


No special environment variables are recognised by ophelp.



Event description files used by OProfile.


This man page is current for oprofile-1.2.0.

See Also

/usr/share/doc/oprofile/, oprofile(1)


Thu 08 February 2018 oprofile 1.2.0