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Reduce energy consumption of Proxmox

Powertop

Powertop is a tool to diagnose issues with power consumption and power management.
It can also be used to tune power management settings.

Install powertop

apt install powertop

Run powertop calibration

Calibration will toggle various functions on and off to determine the best settings for your system. So it is best to run this when the system is idle.

powertop --calibrate

Run powertop to see recommendations

With you can switch between the different tabs.

powertop

Auto tune power management settings (not reboot persistent)

powertop --auto-tune

Systemd service to auto tune power management settings (reboot persistent)

cat << EOF > /etc/systemd/system/powertop.service
[Unit]
Description=Powertop tunings

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/sbin/powertop --auto-tune

[Install]
WantedBy=multi-user.target
EOF

systemctl enable --now powertop.service