cpow - Linux

Overview

cpow is a command-line tool for managing and controlling CPU power settings on Linux systems. It allows users to manipulate CPU frequency, voltage, and other power-related parameters to optimize performance, power consumption, or temperature.

Syntax

cpow [options] [action] [parameters]

Options/Flags

  • -c, –cpu-id: Specify the CPU to control. Default: All CPUs.
  • -q, –quiet: Suppress non-error output.
  • -v, –verbose: Print additional information.
  • -h, –help: Display help information.

Actions

  • list: Display current CPU power settings.
  • set: Set CPU power settings.
  • governor: Set CPU frequency governor.
  • profile: Set CPU performance profile.

Examples

Display CPU frequency:

cpow list frequency

Set CPU frequency to 2.5GHz:

cpow set frequency 2500000

Set CPU frequency governor to performance:

cpow governor performance

Set CPU performance profile to balance:

cpow profile balance

Common Issues

  • Permission denied: Ensure you have root privileges to run cpow.
  • Unknown CPU: Specify the correct CPU ID using the -c option.
  • Unsupported feature: Some CPU features may not be supported on your hardware.

Integration

cpow can be integrated into scripts or other automation tools to manage CPU power settings dynamically. For example:

cpow governor performance && tasksel install performance-desktop

Related Commands

  • cpupower
  • cpufreq-info
  • powertop