Product SiteDocumentation Site

3.2.3. Tuning CPUfreq Policy and Speed

Once you have chosen an appropriate CPUfreq governor, you can view CPU speed and policy information with the cpupower frequency-info command and further tune the speed of each CPU with options for cpupower frequency-set.
For cpupower frequency-info, the following options are available:
For cpupower frequency-set, the following options are available:

Alternative to cpupower

If you do not have the kernel-tools package installed, CPUfreq settings can be viewed in the tunables found in /sys/devices/system/cpu/[cpuid]/cpufreq/. Settings and values can be changed by writing to these tunables. For example, to set the minimum clock speed of cpu0 to 360 KHz, use:
echo 360000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq