The top utility gives the percentage of CPU and memory individual processes are taking, but that doesn’t help much, since there’s no power-related information there. That’s where PowerTOP comes in.
PowerTOP is a Linux tool that finds the software component(s) that make your laptop use more power than necessary while it is idle. As of Linux kernel version 2.6.21, the kernel no longer has a fixed 1000Hz timer tick. This will (in theory) give a huge po