---
name: "op_help"
section: "1"
platform: "linux"
package: "oprofile"
version: "0.8.1-2"
release: "Debian 3.1 (Sarge)"
platforms: ["linux"]
url: "https://new.carta.tech/op_help"
---

# op\_help(1)

list OProfile events

## NAME

op\_help - list OProfile events

## SYNOPSIS

**op\_help** \[ *options* \] \[event name\]

## DESCRIPTION

By default, **op\_help** lists the available performance counter options. If you give it a symbolic event name, it will return the hardware value (e.g. "op\_help DATA\_MEM\_REFS").

## OPTIONS

- **--cpu-type / -c**

  Show the events for the given numerical CPU type.\

- **--get-cpu-type / -r**

  Show the symbolic CPU name.\

- **--help / -? / --usage**

  Show help message.\

- **--version / -v**

  Show version.

## ENVIRONMENT

No special environment variables are recognised by op\_help.

## FILES

- *$prefix/share/oprofile/*

  Event description files used by OProfile.

- */var/lib/oprofile/samples/*

  The location of the generated sample files.

## VERSION

- This man page is current for oprofile-0.8.1.

  ## SEE ALSO

**/usr/share/doc/oprofile/,** **[oprofile(1)](/oprofile/1.md)**