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[Pawel <pslomski64@xxxxxxxxx>]

I've got such results in Arch Linux:

Top causes for wakeups:
  25,0% ( 25,1)      <kernel IPI> : Rescheduling interrupts 
  19,0% ( 19,1)     <kernel core> : hrtimer_start_range_ns (tick_sched_timer) 
  11,3% ( 11,3)           firefox : hrtimer_start_range_ns (hrtimer_wakeup) 
  11,2% ( 11,2)       <interrupt> : ath 
  10,2% ( 10,3)     <kernel core> : hrtimer_start (tick_sched_timer) 
   9,9% (  9,9)          radeon/1 : queue_delayed_work (delayed_work_timer_fn) 
   8,1% (  8,1)       <interrupt> : ahci 
   1,0% (  1,0)         powernowd : hrtimer_start_range_ns (hrtimer_wakeup) 
   0,5% (  0,5)       <interrupt> : ohci_hcd:usb4, ohci_hcd:usb6, radeon 
   0,5% (  0,5)              kwin : hrtimer_start_range_ns (hrtimer_wakeup) 

2.6.34-ARCH #1 SMP PREEMPT Mon Jul 5 22:12:11 CEST 2010 x86_64 AMD
Athlon(tm) 64 X2 Dual Core Processor 5000+ AuthenticAMD GNU/Linux

-- 
Tens of wakes per second in "[kernel scheduler] Load balancing tick" on Core 2 Duo even with only 1 core enabled
https://bugs.launchpad.net/bugs/524281
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