1. NAME▲

cpufreq-set - A small tool which allows to modify cpufreq settings.

2. SYNTAX ▲

cpufreq-set [options]

3. DESCRIPTION ▲

cpufreq-set allows you to modify cpufreq settings without having to type e.g. "/sys/devices/system/cpu/cpu0/cpufreq/scaling_set_speed" all the time.

4. OPTIONS ▲

  • -c --cpu <CPU>
        number of CPU where cpufreq settings shall be modified.
  • -d --min <FREQ>
        new minimum CPU frequency the governor may select.
  • -u --max <FREQ>
        new maximum CPU frequency the governor may select.
  • -g --governor <GOV>
        new cpufreq governor.
  • -f --freq <FREQ>
        specific frequency to be set. Requires userspace governor to be available and loaded.
  • -r --related
        modify all hardware-related CPUs at the same time
  • -h --help
        Prints out the help screen.

5. REMARKS ▲

Omitting the -c or --cpu argument is equivalent to setting it to zero.

The -f FREQ, --freq FREQ parameter cannot be combined with any other parameter except the -c CPU, --cpu CPU parameter.

FREQuencies can be passed in Hz, kHz (default), MHz, GHz, or THz by postfixing the value with the wanted unit name, without any space (frequency in kHz =^ Hz * 0.001 =^ MHz * 1000 =^ GHz * 1000000).

On Linux kernels up to 2.6.29, the -r or --related parameter is ignored.

6. FILES ▲

 
Sélectionnez
/sys/devices/system/cpu/cpu*/cpufreq/
/proc/cpufreq (deprecated)
/proc/sys/cpu/ (deprecated)

7. AUTHORS ▲

 
Sélectionnez
Dominik Brodowski <linux@brodo.de> - author
Mattia Dongili<malattia@gmail.com> - first autolibtoolization

8. SEE ALSO ▲

cpufreq-info(1), cpufreq-aperf(1)