====== x86_energy_perf_policy ======

  watch --interval '0.5' grep \'cpu MHz\' '/proc/cpuinfo'

  * Check

  sudo x86_energy_perf_policy

  * Max Performance

  sudo x86_energy_perf_policy --all 'performance' --turbo-enable '1' --force

====== Scripts ======

  * [[linux:distros:ubuntu|Ubuntu]]

===== GNOME Power Management =====

  * Automatic power-management like ''tlp''
  * Required to remove so it doesn't override below udev rule

  sudo apt remove power-profiles-daemon

===== AC =====

  sudo mkdir -p '/etc/udev/scripts.d' && sudo -e '/etc/udev/scripts.d/ac-power.sh' && sudo chmod +x '/etc/udev/scripts.d/ac-power.sh'

<code>
#!/bin/bash

# AC
x86_energy_perf_policy --all 'performance' --turbo-enable '1' --force

# End</code>

  '/etc/udev/scripts.d/ac-power.sh'

===== Battery =====

  sudo mkdir -p '/etc/udev/scripts.d' && sudo -e '/etc/udev/scripts.d/battery-power.sh' && sudo chmod +x '/etc/udev/scripts.d/battery-power.sh'

<code>
#!/bin/bash

# Battery
x86_energy_perf_policy --all 'balance-power' --turbo-enable '0' --force

# End</code>

  '/etc/udev/scripts.d/battery-power.sh'

===== udev Rule =====

  sudo -e '/etc/udev/rules.d/99-power.rules' && sudo udevadm control --reload

<code>
# AC
ACTION=="add|change", SUBSYSTEM=="power_supply", ATTRS{type}=="Mains", ATTRS{online}=="1", RUN+="/etc/udev/scripts.d/ac-power.sh"

# Battery
ACTION=="add|change", SUBSYSTEM=="power_supply", ATTRS{type}=="Mains", ATTRS{online}=="0", RUN+="/etc/udev/scripts.d/battery-power.sh"

# End</code>

===== Check =====

  * Should report something like ''Write to unrecognized MSR 0x770 by x86_energy_perf'' early boot and on AC hot-plug

  sudo dmesg | grep 'MSR'

  watch --interval '0.5' grep \'cpu MHz\' '/proc/cpuinfo'