[indiana-discuss] b111a: Power Management and nwam-issue ?

[Yiannis Mavroukakis]

Hmm no that wasn't it..when I switched to poll-mode however, it worked.

Aubrey Li wrote:
> On Sun, Apr 26, 2009 at 1:27 AM, Ioannis Mavroukakis
> <imavroukakis at gameaccount.com> wrote:
>   
>> Hmm running powertop shows my cpu pegged at warp speed
>>
>>           OpenSolaris PowerTOP version 1.1
>>
>> Cn            Avg    residency    P-states (frequencies)
>> C0 (cpu    running)        (32.7%)         800 Mhz    0.0%
>> C1            0.6ms    (67.3%)        1200 Mhz    0.0%
>>                                               1600 Mhz    0.0%
>>                                               2000 Mhz    0.0%
>>                                               2001 Mhz(turbo)    100.0%
>>     
>
> if your system is idle, C0 residency should < 10%.
> Here C0 = 32.7%, there must be a workload on the system.
>
>   
>> Wakeups-from-idle per second: 1156.3    interval: 5.2s
>> Power usage (ACPI estimate): 2.737W (discharging: 0.6 hours)
>>
>> Top causes for wakeups:
>> 19.3% (223.2)               <kernel> :    genunix`cv_wakeup
>> 8.6% (100.0)               <kernel> :    genunix`clock
>>     
>
> Apparantly, clock should be the top cause for wakeups, not cv_wakeup
> if your system is in idle.
>
>   
>> 4.0% ( 46.3)            <interrupt> :    i915#0
>> 3.5% ( 40.8)               sched :    <cross calls>
>> 3.2% (    36.9)         <interrupt> :    i8042#0
>> 1.9% (    21.9)            <interrupt> :    wpi#0
>> 1.7% (    19.2)               <kernel> :
>>  uhci`uhci_handle_root_hub_status_change
>>
>>
>>
>> Q - Quit   R - Refresh
>>
>> I have cpupm and cpu-threshold setup...it used to work on my Travelmate
>> 5720, not any more after svn111..
>>     
>
> You can check the system by "mpstat" or "vmstat" or "prstat" to see the cpu
> utilization and what is using CPU.
>
> -Aubrey
>