Mailinglist Archive: opensuse-bugs (13451 mails)

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https://bugzilla.novell.com/show_bug.cgi?id=335086

           Summary: Too many wakeups with "processor" kernel module
           Product: openSUSE 10.3
           Version: Final
          Platform: i686
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Kernel
        AssignedTo: kernel-maintainers@xxxxxxxxxxxxxxxxxxxxxx
        ReportedBy: mwelinder@xxxxxxxxx
         QAContact: qa@xxxxxxx
          Found By: ---


I boot OpenSUSE 10.3, let things settle down a bit, and then powertop
tells me that there are ~50 wakeups per second.  Fine.

I leave the system for a while and come back.  30000 wakeups per second.
Not fine.

powertop does not actually tell me what is waking up the system.  The top
cause has 11 wakeups per second.

Experimentation shows that the cause is the processor kernel module.  If I
do

toshiba:/home/welinder # lsmod  | grep processor
processor              40876  2 acpi_cpufreq,thermal
toshiba:/home/welinder # rmmod acpi_cpufreq thermal processor

things immediately revert to normal.  If I then do

toshiba:/home/welinder # modprobe processor

things go wild again.

The wakeups appear to be real: the fan comes up more often in the wild
state.


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