cpupower

CPU power management and tuning tools

TLDR

List all CPUs

$ sudo cpupower -c all info

Set power-saving governor for all CPUs

$ sudo cpupower -c all frequency-set --governor powersave

Show available governors for CPU 0

$ sudo cpupower -c 0 frequency-info -g | grep "analyzing\|governors"

Get CPU 4's hardware frequency

$ sudo cpupower -c 4 frequency-info -w -m

SYNOPSIS

cpupower [-c cpus] subcommand [options]

cpupower is a collection of tools for CPU power management and tuning. It replaces the older cpufrequtils package and provides unified access to frequency scaling, idle states, and power features.Subcommands include frequency-info, frequency-set, idle-info, idle-set, and monitor.

PARAMETERS

-c, --cpu cpus

Specify CPU(s) to operate on (e.g., 0, 1-3, all)

frequency-info

Show current frequency settings.

frequency-set

Modify frequency settings.

idle-info

Show idle state information.

idle-set

Enable/disable specific idle states.

monitor

Report CPU frequency and idle residency statistics.

info

Show kernel configuration and hardware information.

-g, --governor

Set frequency governor (with frequency-set) or show available governors (with frequency-info).

-u, --max FREQ

Set maximum frequency (requires frequency-set).

-d, --min FREQ

Set minimum frequency (requires frequency-set).

-f, --freq FREQ

Set exact frequency (requires userspace governor).

-m, --human

Human-readable output.

CAVEATS

Requires root privileges for setting values. Available governors and features depend on hardware and kernel configuration. Replaces cpufreq-info and cpufreq-set.