This script changes, on Intel processors under GNU/Linux, the performance setting of a 'cpufreq' subsystem layer called 'scaling_governor'. It applies for each core of the system.

set-cpufreq-scaling-governor-to-performance.sh

#!/bin/bash

# This script changes, on Intel processors under GNU/Linux, the performance setting of a 'cpufreq' subsystem layer called 'scaling_governor'.
# It applies to all cores of the system.
# For more details on the cpufreq subsystem, read the docs: https://docs.kernel.org/admin-guide/pm/cpufreq.html

# W.I.P: Write a script for "doas" self-configuration. The "doas" package is available in the repositories of most distros. This package is a requirement and must be already installed and configured to accept the parameters that specify the cores. Doas manual: https://man.openbsd.org/doas

numberOfSystemCores=$(($(grep -c ^processor /proc/cpuinfo)-1))

enumeratedSystemCores=$( seq 0 $numberOfSystemCores )


for i in $enumeratedSystemCores
do
	pathToCpuCoreCpufreqGovernor=/sys/devices/system/cpu/cpu$i/cpufreq/scaling_governor

	echo performance | doas tee $pathToCpuCoreCpufreqGovernor
done

# This piece of code is licensed under CC0 1.0. Therefore, it should be treated as public domain.
# Full license disclosure at: https://creativecommons.org/publicdomain/zero/1.0/legalcode