Green Linux thru CPU Frequency Scaling

Green EnergyBeing “Green” is being helpful towards the environment, but also to your electricity bills… The most commonly used techniques to reduce the power usage of a computer device are :

  • Turning off your monitor/screen/tv when not used.
  • Turning off the hard disks when they aren’t used
  • CPU Frequency Scaling

For the last bit, you’ll have to check if you motherboard/cpu supports this… Most will probably support this, apart from the “really” old. The motherboard (& CPU) of my HTPC (MythTV) is capable of using AMD’s Cool’n’Quiet. I followed the following guide on the Ubuntu Forum, and used the “powersave” algorithm. It reduced my CPU frequency to 1000, where I must admit that I don’t notice anything on my combined MythTV frontend/backend. Next up is measuring the actual power usage, but I need to obtain a measuring device for that… 😉

Extra
For an interesting readup on the same topic; check MythTV NZ, ThinkWiki’s How to reduce power consumption, …

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