Comment 63 for bug 760131

Testing it on a Sony Vaio VGN-SR21M

Wakeups from idle per second have generally dropped from 150 - 200 to a 50 - 100 range.

Linux VGN-SR21M 2.6.38-9-generic #43lp760131v201106060906 SMP Mon Jun 6 08:27:00 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

Cn Avg residency P-states (frequenze)
C0 (cpu occupata) ( 1,1%) Modalità turbo 0,1%
polling 0,0ms ( 0,0%) 2,27 Ghz 0,0%
C1 mwait 0,1ms ( 0,0%) 1,60 Ghz 0,0%
C2 mwait 0,1ms ( 0,0%) 800 Mhz 99,9%
C4 mwait 11,5ms (98,9%)

Wakeups da idle per secondo : 86,7 interval: 15,0s
Energia utilizzata (stima ACPI): 15,5W (1,1 ore) (long term: 18,8W,/0,9h)

Cause principali di wakeup:
  34,5% ( 36,9) [extra timer interrupt]
  18,5% ( 19,7) desktopcouch-se
  13,6% ( 14,5) [radeon] <interrupt>
   9,4% ( 10,0) kworker/0:0
   0,0% ( 0,0)D rs:main Q:Reg