---
name: "cpupower-frequency-info"
section: "1"
platform: "linux"
package: "cpupower"
version: "7.3.1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/cpupower-frequency-info"
---

# cpupower-frequency-info(1)

Utility to retrieve cpufreq kernel information

## NAME

cpupower-frequency-info - Utility to retrieve cpufreq kernel information

## SYNTAX

cpupower \[ -c cpulist \] frequency-info \[*options*\]

## DESCRIPTION

A small tool which prints out cpufreq information helpful to developers and interested users.

## OPTIONS

- **-e** **--debug**

  Prints out debug information.

- **-f** **--freq**

  Get frequency the CPU currently runs at, according to the cpufreq core.

- **-w** **--hwfreq**

  Get frequency the CPU currently runs at, by reading it from hardware (only available to root).

- **-l** **--hwlimits**

  Determine the minimum and maximum CPU frequency allowed.

- **-d** **--driver**

  Determines the used cpufreq kernel driver.

- **-p** **--policy**

  Gets the currently used cpufreq policy.

- **-g** **--governors**

  Determines available cpufreq governors.

- **-b** **--boost**

  Gets the current boost state support.

- **-z** **--epp**

  Gets the current EPP (energy performance preference).

- **-r** **--related-cpus**

  Determines which CPUs run at the same hardware frequency.

- **-a** **--affected-cpus**

  Determines which CPUs need to have their frequency coordinated by software.

- **-s** **--stats**

  Shows cpufreq statistics if available.

- **-y** **--latency**

  Determines the maximum latency on CPU frequency changes.

- **-o** **--proc**

  Prints out information like provided by the /proc/cpufreq interface in 2.4. and early 2.6. kernels.

- **-m** **--human**

  human-readable output for the -f, -w, -s and -y parameters.

- **-n** **--no-rounding**

  Output frequencies and latencies without rounding off values.

- **-c** **--performance**

  Get performances and frequencies capabilities of CPPC, by reading it from hardware (only available on the hardware with CPPC).

- By default only values of core zero are displayed. How to display settings of

  ## REMARKS

other cores is described in the [cpupower(1)](/cpupower/1.md) manpage in the --cpu option section.

You can't specify more than one of the output specific options -o -e -a -g -p -d -l -w -f -y.

You also can't specify the -o option combined with the -c option.

## FILES

```
/sys/devices/system/cpu/cpu*/cpufreq/
/proc/cpufreq (deprecated)
/proc/sys/cpu/ (deprecated)
```

## AUTHORS

```
Dominik Brodowski <linux@brodo.de> - author
Mattia Dongili<malattia@gmail.com> - first autolibtoolization
```

## SEE ALSO

[cpupower-frequency-set(1)](/cpupower-frequency-set/1.md), [cpupower(1)](/cpupower/1.md)