[Bug 373245] Re: karmic: wakeups <kernel core> : hrtimer_start_range_ns (tick_sched_timer)

Praetor77 geramses at yahoo.com
Thu Feb 4 16:17:42 UTC 2010


Removed Ubuntu One, turned on laptop_mode, laptop_mode_tools, got
following results (this is while running Firefox and Deluge, just as in
the powertop results posted above):

Cn                Avg residency       P-states (frequencies)
C0 (cpu running)        ( 7.7%)         1.60 Ghz     0.0%
polling           0.0ms ( 0.0%)         1333 Mhz     0.0%
C1 mwait          0.0ms ( 0.0%)         1067 Mhz     0.0%
C2 mwait          3.5ms ( 3.2%)          800 Mhz   100.0%
C4 mwait          2.1ms (89.1%)

Wakeups-from-idle per second : 433.1    interval: 10.0s
Power usage (ACPI estimate): 7.6W (1.9 hours) (long term: 8.6W,/1.7h)

Top causes for wakeups:
  24.3% ( 92.8)       <interrupt> : ath 
  21.5% ( 82.1)     <kernel core> : hrtimer_start_range_ns (tick_sched_timer) 
  13.1% ( 50.0)       <interrupt> : extra timer interrupt 
   7.2% ( 27.4)      <kernel IPI> : Rescheduling interrupts 
   6.7% ( 25.7)            deluge : hrtimer_start_range_ns (hrtimer_wakeup) 
   5.3% ( 20.3)           deluged : hrtimer_start_range_ns (hrtimer_wakeup)

-- 
karmic: wakeups  <kernel core> : hrtimer_start_range_ns (tick_sched_timer) 
https://bugs.launchpad.net/bugs/373245
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