acpi wakeups

[Frank Ursel]

On Fr, Jun 08, 2007 at 01:02:12 -0700, Arjan van de Ven wrote:
> Adam Lantos wrote:
>> 
>> xfce4-battery-monitor for instance, polls every second, and is
>> responsible for 55 wakeups per second. (I have patched so now it makes
>> every single poll per minute, but I wonder if someone have the same
>> acpi-related problem)
> 
>> can you suggest me some way to investigate wheter this is a bug in the
>> acpi subsystem or just the normal behaviour?
> 
> it's probably normal behavior.
> 
> xcfe4 is a bit.. overactive here. It's not like your battery is 
> suddenly going to be discharged a lot one second later......

I can't reproduce it on my system. I use xfce4 with battery-monitor
plugin too. And I have about 25 wakeups per second:

Cn          Verweildauer (10s)  Mittlere Verweildauer
C0 (Prozessor läuft)    ( 0,2%)
C1                0,0ms ( 0,0%)                   0,0ms
C2                6,9ms ( 1,1%)                   9,1ms
C3               55,9ms (98,7%)                  21,3ms


Wakeups-from-idle per second : 19,2
Power usage (ACPI estimate) :  11,6 W (2,4 hours left) 

Top causes for wakeups:
  33,7% (  9,2)       <interrupt> : uhci_hcd:usb4, yenta, i915 at pci:0000:00:02.0
  14,7% (  4,0)   <kernel module> : usb_hcd_poll_rh_status (rh_timer_func)
  11,7% (  3,2)              Xorg : do_setitimer (it_real_fn)
   7,3% (  2,0)   xfce-mcs-manage : schedule_timeout (process_timeout)
   7,3% (  2,0)   xfce4-clipman-p : schedule_timeout (process_timeout)
   5,1% (  1,4)       <interrupt> : extra timer interrupt