22.04 performance

[Ralf Mardorf]

>From command line run

  echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

this much likely does work to switch to full throttle. How to enable a
boost feature or how to revert back to what ever kind of "balanced"
frequency scaling probably can be rocket science.

For my AMD machine it was like this:

performance
runs the CPU at the maximum frequency
ondemand
scales the frequency dynamically according to the load

For my current Intel machine it's like this:

performance
runs the CPU at the maximum frequency
powersave
scales the frequency dynamically according to the load

but on some Intel machines it could be that
powersave
runs the CPU at the minimum frequency