cpufreq-set

参考

cpufreq-selector

参考

注意

并不是所有的系统都可以任意调整CPU频率，也就是userspace模式。

This is because your system is using the new driver called intel_pstate. There are only two governors available when using this driver: powersave and performance.
The userspace governor is only available with the older acpi-cpufreq driver (which will be automatically used if you disable intel_pstate at boot time; you then set the governor/frequency with cpupower):

  • disable the current driver: add intel_pstate=disable to your kernel boot line
  • boot, then load the userspace module: modprobe cpufreq_userspace
  • set the governor: cpupower frequency-set --governor userspace
  • set the frequency: cpupower --cpu all frequency-set --freq 800MHz