Comment 15 for bug 524281

Similar test-case on a Athlon64 cpu shows much lower wake-ups:

Top causes for wakeups:
  38.3% (170.0)D firefox-bin
  22.4% ( 99.4) pulseaudio
  13.8% ( 61.2) [nvidia] <interrupt>
  10.8% ( 48.0) PS/2 keyboard/mouse/touchpad interrupt
   7.8% ( 34.5) [kernel scheduler] Load balancing tick
   2.5% ( 11.3) [pata_via] <interrupt>