---
name: "cpufreq-info"
section: "1"
platform: "linux"
package: "cpufrequtils"
version: "008-2"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/cpufreq-info"
---

# cpufreq-info(1)

Utility to retrieve cpufreq kernel information

## NAME

cpufreq-info - Utility to retrieve cpufreq kernel information

## SYNTAX

cpufreq-info \[*options*\]

## DESCRIPTION

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

## OPTIONS

- **-c** **--cpu** \<*CPU*\>

   \<*CPU*\> number which information shall be determined about.

- **-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.

- **-a** **--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.

- **-h** **--help**

  Prints out the help screen.

## REMARKS

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

[cpufreq-set(1)](/cpufreq-set/1.md), [cpufreq-aperf(1)](/cpufreq-aperf/1.md)