Some sample code and tips can be found here about Power Management on Linux/Fedora:

• varcpuload.c Simple C program to create reproducable artifical sustained load on a machine.
• varnetload Simple Python script to create reproducable sustained network traffic.
• genresult.sh Simple bash script that runs powertop in dump mode and creates a brief summary of the run.
• malloc_trim_ldp.c A LDPRELOAD library that can be used to potentially save memory for larger apps.