oam/knowledge base/cpupower.md

Cpupower

Default governor is ondemand for older CPUs and kernels and schedutil for new CPUs and kernels.

TL;DR

# Install.
apt install 'linux-cpupower'
dnf install 'kernel-tools'
zypper install 'cpupower'

# List the available governors.
cpupower frequency-info --governors
cpupower -c "3-6" frequency-info --governors
cpupower --cpu "0-$(( $(nproc) - 1 ))" frequency-info --governors

# Get the current active governor.
cpupower frequency-info --policy
cpupower -c '4' frequency-info --policy
cpupower --cpu '4,5' frequency-info --policy

# Set new governors until reboot.
sudo cpupower frequency-set -g 'performance'
sudo cpupower -c '1' frequency-set --governor 'powersave'
sudo cpupower --cpu '2,4,7' frequency-set --governor 'schedutil'

# Get the current frequency of CPUs.
cpupower frequency-info -f
cpupower -c '4-7' frequency-info -fm
cpupower --cpu '2,5' frequency-info --freq --human

Further readings

• CPU frequency scaling

Sources

All the references in the further readings section, plus the following:

• CPU governer settings ignore nice load