Whenever we need to check which process is consuming most CPU we use the TOP command or HTOP command. Then you can kill processes consuming resources unnecessarily on your GNU/Linux system.

But yesterday I discovered (thanks Marcos) the PowerTOP command:

• Show how well your system is using the various hardware power-saving features
• Show you the culprit software components that are preventing optimal usage of your hardware power savings
• Help Linux developers test their application and achieve optimal behavior
• Provide you with tuning suggestions to achieve low power consumption

For me the last characteristic is great in order to save battery and power consumption.

By the way…I killed skype (mandatory binary installation, because skype is not OpenSource) since it was devouring my CPU