Calibrate
# Ubuntu
sudo apt install lm-sensors hddtemp psensor
# Arch
yay -S hddtemp hddtemp psensor
sudo sensors-detect
# ubuntu
sudo service module-init-tools restart
sensors
Scaling drivers
https://wiki.archlinux.org/index.php/CPU_frequency_scaling
- intel_pstate: This driver implements a scaling driver with an internal governor for Intel Core (Sandy Bridge and newer) processors.
- acpi-cpufreq: CPUFreq driver which utilizes the ACPI Processor Performance States. This driver also supports the Intel Enhanced SpeedStep (previously supported by the deprecated speedstep-centrino module).
# see current driver
cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver
Scaling governors
- performance: Run the CPU at the maximum frequency.
- powersave: Run the CPU at the minimum frequency.
- userspace: Run the CPU at user specified frequencies.
- ondemand: Scales the frequency dynamically according to current load. Jumps to the highest frequency and then possibly back off as the idle time increases.
- conservative: Scales the frequency dynamically according to current load. Scales the frequency more gradually than ondemand.
- schedutil: Scheduler-driven CPU frequency selection.
# current governor
cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
# setting to powersave
sudo cpupower frequency-set -g powersave
Disable Intel pstate scaling driver (if needed)
To change back to the ACPI driver, add the following to the
GRUB_CMDLINE_LINUX_DEFAULT variable in the /etc/default/grub file:
then rebuild the grub config
sudo grub-mkconfig -o /boot/grub/grub.cfg
CPUfreq
# ubuntu
sudo apt-get install indicator-cpufreq
# arch
sudo snap install cpufreq