Openmoko Bug #1597: after a long suspend time, kernel thread events/0 sits eating 30% cpu

Openmoko Public Trac bugs at docs.openmoko.org
Sat Oct 11 11:38:09 CEST 2008


#1597: after a long suspend time, kernel thread events/0 sits eating 30% cpu
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    Reporter:  raster           |        Owner:  zecke     
        Type:  defect           |       Status:  in_testing
    Priority:  normal           |    Milestone:            
   Component:  System Software  |      Version:            
    Severity:  major            |   Resolution:            
    Keywords:                   |    Blockedby:            
Reproducible:                   |     Blocking:            
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Comment(by andy):

 Wow that is good to know, folks have reported that hotness symptom before,
 at least we got a clue now it is associated with the events thing and
 seems to be to do with WLAN.

 When WLAN is in RX or TX in RF, it can pull these kinds of currents like
 extra 400mW.  Normally it uses 80211 powersave and times its RF activity
 around the beacon of the AP, so its average power is much lower.  But if
 for some reason its RF stage was stuck on, it will heat up itself and
 maybe also raise the temperature of the battery.

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/1597#comment:43>
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