Interestingly, setting CPU scaling governor to performance is not
enough for Pd (it is for other applications, though). When doing that
for each core, they all run at maximum speed. However, it doesn't help
with making Pd glitch free. I really have to put some load on them.
This confirms what I suspected for while now: The advanced power saving
features of modern CPUs don't really help for realtime audio.
I wonder what softwares like Ardour do differently to not fall victim
of aggressive power saving.
Having a constantly running fan is also not an ideal situation. I don't
care about increased power consumption at this point. Maybe there is a
less invasive way to keep the CPU busy?