Linux command
cpufreq-set 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
Set the frequency governor
sudo cpufreq-set -c [1] -g [performance]
Set the minimum frequency
sudo cpufreq-set -c [1] -d [800MHz]
Set the maximum frequency
sudo cpufreq-set -c [1] -u [2.4GHz]
Pin to a specific frequency
sudo cpufreq-set -c [1] -f [2000MHz]
Apply settings to all CPUs sharing the policy
sudo cpufreq-set -r -g [powersave]
说明
cpufreq-set modifies the Linux kernel cpufreq policy for a CPU, adjusting the scaling governor, minimum and maximum frequencies, or pinning a fixed frequency. It is part of the cpufrequtils package. Frequency values accept the suffixes `Hz`, `kHz` (default if no unit given), `MHz`, `GHz`, and `THz` appended directly to the number (for example `2400MHz` or `2.4GHz`). Valid values for the current CPU can be discovered with `cpufreq-info -l`.
参数
- -c, --cpu _cpu_
- CPU number to operate on. Defaults to CPU 0 when omitted.
- -d, --min _freq_
- Set the minimum frequency the governor may select.
- -u, --max _freq_
- Set the maximum frequency the governor may select.
- -g, --governor _governor_
- Select the scaling governor (e.g. `performance`, `powersave`, `ondemand`, `conservative`, `schedutil`, `userspace`).
- -f, --freq _freq_
- Pin the CPU to a specific frequency. Requires the `userspace` governor and cannot be combined with `-d`, `-u`, or `-g`.
- -r, --related
- Also apply the change to every CPU hardware-related to the selected one.
- -h, --help
- Show help.
FAQ
What is the cpufreq-set command used for?
cpufreq-set modifies the Linux kernel cpufreq policy for a CPU, adjusting the scaling governor, minimum and maximum frequencies, or pinning a fixed frequency. It is part of the cpufrequtils package. Frequency values accept the suffixes `Hz`, `kHz` (default if no unit given), `MHz`, `GHz`, and `THz` appended directly to the number (for example `2400MHz` or `2.4GHz`). Valid values for the current CPU can be discovered with `cpufreq-info -l`.
How do I run a basic cpufreq-set example?
Run `sudo cpufreq-set -c [1] -g [performance]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -c, --cpu _cpu_ do in cpufreq-set?
CPU number to operate on. Defaults to CPU 0 when omitted.