Linux command
cpupower 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
List
sudo cpupower -c all info
Example
sudo cpupower -c all frequency-set --governor powersave
Example
sudo cpupower -c 0 frequency-info -g | grep "analyzing\|governors"
Example
sudo cpupower -c 4 frequency-info -w -m
说明
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.
参数
- -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.
FAQ
What is the cpupower command used for?
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.
How do I run a basic cpupower example?
Run `sudo cpupower -c all info` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -c, --cpu _cpus_ do in cpupower?
Specify CPU(s) to operate on (e.g., 0, 1-3, all)