Cpupower
From wikinotes
Displays cpu frequency info, and can be used as a governor
(see cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
).
Display and/or manages cpu frequency.
Documentation
github https://github.com/torvalds/linux/tree/master/tools/power/cpupower
Locations
/etc/default/cpupower
config
Install
pacman -S cpupower
Usage
For Info/Settings
cpupower monitor # show stats cpupower frequency-info # show range/current # setting frequencies cpupower frequency-set -u 3GHz # set max clock cpupower frequency-set -d 800MHz # set min clock cpupower frequency-set -f 800MHz # set clock # governor/driver cpupower frequency-set -g ${GOVERNOR}As Governor
On newer intel CPUs, when which use
intel_pstate=enable
kernel param by default,
you cannot usecpupower
s ondemand or conservative governors which render this service useless.
Arguably, your cpu knows better how to manage it's performance -- but if you're having a performance issue it may still be useful.If you'd like to use use ondemand/conservative as a governor, you'll need to modify the kernel params in your bootloader. Example
# /boot/efi/loaders/entries/archlinux.conf # (systemd-boot example) options intel_pstate=disable root=PARTUUID=${partition_uuid} rwsystemctl enable --now cpupower.service
Configuration
Configuration isn't necessary, but if you'd like to enforce min/max cpu.
# /etc/default/cpupower # ondemand: dynamic scaling - max cpu, scaling down for idle # conservative: dynamic scaling - more resistant to scaling up (?) governor="ondemand" min_freq="2.25GHz" max_freq="3GHZ" # see