====== cpufrequtils ======

Deprecated in D13 Trixie. Use ''linux-cpupower'' instead.

It provides:
  * ''/etc/init.d/cpufrequtils''  - disabled by default (no file ``/etc/default/cpufrequtils``)
  * ''/etc/init.d/loadcpufreq''   - loads kernel modules
  * ''cpufreq-set''
  * ''cpufreq-info''
  * ''cpufreq-aperf''

''
utilities to deal with the cpufreq Linux kernel feature
 This package contains two utilities for inspecting and setting the
 CPU frequency through both the sysfs and procfs CPUFreq kernel
 interfaces.
 .
 By default, it also enables CPUFreq at boot time if the correct CPU
 driver is found.
''
<code>/etc/default/cpufrequtils</code>

==== change governor for all cpus ====

<code bash>
for ((i=0;i<$(nproc);i++)); do cpufreq-set -c $i -r -g powersave; done
</code>

Ansible one liner:
<code bash>
(cd .. && ansible pves -i $INVENTORY -a "bash -c 'for ((i=0;i<\$(nproc);i++)); do cpufreq-set -c \$i -r -g powersave; done'" --become)
</code>