powertop: powertop (a tool to improve powersaving on Intel)
powertop: 
powertop: PowerTOP is a Linux tool that helps you find those programs that are
powertop: misbehaving while your computer is idle. PowerTOP has these 4 goals:
powertop: * Show how well your system is using the various hardware power-saving
powertop:   features
powertop: * Show you the culprit software components that are preventing optimal
powertop:   usage of your hardware power savings
powertop: * Help Linux developers test their application and achieve optimal
powertop:   behavior
powertop: * Provide you with tuning suggestions to achieve low power consumption