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

[Brock Pytlik]

Bill Nesheim wrote:
> On 04/24/09 11:55, Mark Haywood wrote:
>> Bill Nesheim wrote:
>>> Detlef Drewanz at Sun.COM wrote:
>>>> Hi,
>>>> with b111a now I can boot again my Toshiba M9.
>>>>
>>>> 1.I discoverred that Power Management seems no longer to work.
>>>> (The fan is blowing like hell and "kstat -m cpu_info" shows in
>>>> currentClock_Hz 2001000000
>>>> but
>>>> supported_frequencies_Hz
>>>> 800000000:1200000000:1600000000:2000000000:2001000000
>>>>
>>>> New Bug with b111a ? 
>
> <snip>
>>
>> The current_clock_Hz is a little deceiving. The Power Aware 
>> Dispatcher results in much more frequent P-State transitions. Try 
>> running /usr/bin/powertop for better information.
>>
>> Mark
>
> Indeed.  powertop shows the system switching nicely between 800Mhz and 
> 1401 Mhz), with most time spent at 800.  Thanks.
>    -- Bill
>
Unfortunately, I don't see the same thing on my Tecra M10. Perhaps I 
haven't twiddled the right switch to turn power management on, but I 
would've expected this to have been on by default. In any case, powertop 
reports that my machine's always at 2531 Mhz (more detailed output below 
in case that helps).

Brock

                                        OpenSolaris PowerTOP version 1.1

Cn            Avg    residency    P-states (frequencies)
C0 (cpu    running)        (20.3%)         800 Mhz    0.0%
C1            0.5ms    (79.7%)        1600 Mhz    0.0%
                                                2530 Mhz    0.0%
                                                2531 Mhz    100.0%

Wakeups-from-idle per second: 1715.5    interval: 5.0s
Power usage (ACPI estimate): 0.000W (running on    AC power, fully    
charged)

Top causes for wakeups:
20.7% (354.7)               <kernel> :    genunix`cv_wakeup
 9.7% (166.8)         <interrupt> :    audiohd#0
 7.5% (129.4)                  sched :    <cross calls>
 5.8% (100.2)               <kernel> :    genunix`clock
 2.4% (    41.8)         <interrupt> :    iwh#0
 1.4% (    23.2)               <kernel> :    
uhci`uhci_handle_root_hub_status_change
 0.8% (    14.4)         <interrupt> :    i8042#0
 0.8% (    13.6)         firefox-bin :    <cross calls>
 0.6% (    10.0)               <kernel> :    genunix`delay_wakeup
 0.5% (     8.2)        gnome-netstatus- :    <cross calls>
 0.5% (     7.8)               <kernel> :    
ehci`ehci_handle_root_hub_status_change
 0.3% (     6.0)               <kernel> :    uhci`uhci_cmd_timeout_hdlr
 0.3% (     4.4)               <kernel> :    genunix`lwp_timer_timeout
 0.2% (     4.0)               <kernel> :    genunix`schedpaging
 0.1% (     2.0)               <kernel> :    cpudrv`cpudrv_monitor_disp
 0.1% (     1.8)         <interrupt> :    e1000g#0
 0.1% (     1.2)               <kernel> :    sd`sd_pm_idletimeout_handler
 0.1% (     1.0)               <kernel> :    nvidia`nvidia_rc_timer





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