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

[Matt Ingenthron]

Hi Mark/all,

I'm sorry to say, with my Tecra M9, I have the very same issue.  More 
inline below...

Brock Pytlik wrote:
> Bill Nesheim wrote:
>> On 04/24/09 11:55, Mark Haywood wrote:
>>> Bill Nesheim wrote:
>>
>> <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).

Similar to Brock's situation, mine is always staying in the fastest 
P-state. 

Reading the thread I've tried setting cpupm in power.conf to "enable", 
"enable poll-mode" and "enable event-mode", running pmconfig each time I 
made a change.  No luck... it stays at the highest P-state the whole time. 

This seems to be a change in behavior.  powertop used to show different 
P-states in reaction to load. 

I also went into the BIOS setup and verified everything was dynamic and 
at defaults.  Any thoughts?

			OpenSolaris PowerTOP version 1.1

Cn			Avg	residency	P-states (frequencies)
C0 (cpu	running)		(27.2%)		 800 Mhz	0.0%
C1			0.5ms	(72.8%)		1200 Mhz	0.0%
                                                1600 Mhz	0.0%
                                                2200 Mhz	0.0%
                                                2201 Mhz(turbo)	100.0%

Wakeups-from-idle per second: 1531.7    interval: 5.0s
Power usage (ACPI estimate): 29.495W (discharging: 0.7 hours)

Top causes for wakeups:
15.6% (239.5)               <kernel> :	genunix`cv_wakeup
 6.5% (100.0)               <kernel> :	genunix`clock
 5.4% ( 82.0)                  sched :	<cross calls>
 5.2% (	80.2)		 <interrupt> :	i8042#0
 1.4% (	20.8)		 <interrupt> :	iwk#0
 1.2% (	19.0)               <kernel> :	uhci`uhci_handle_root_hub_status_change
 1.2% (	17.8)            firefox-bin :	<cross calls>
 0.7% (	10.2)               <kernel> :	genunix`delay_wakeup
 0.7% (	10.0)               <kernel> :	ata`ghd_timeout
 0.5% (	 8.4)                  intrd :	<cross calls>
 0.5% (	 7.6)               <kernel> :	ehci`ehci_handle_root_hub_status_change
 0.3% (	 5.0)               <kernel> :	uhci`uhci_cmd_timeout_hdlr
 0.3% (	 4.0)		    <kernel> :	genunix`schedpaging
 0.1% (	 2.0)		    <kernel> :	cpudrv`cpudrv_monitor_disp
 0.1% (	 1.2)            <interrupt> :	ata#0
 0.1% (	 1.0)               <kernel> :	e1000g`e1000g_local_timer
 0.1% (	 1.0)               <kernel> :	TS`ts_update
 0.1% (	 1.0)		 <interrupt> :	uhci#4  
 0.1% (	 1.0)            <interrupt> :	uhci#0
 0.1% (	 1.0)		 <interrupt> :	nvidia#0
 0.1% (	 1.0)		    <kernel> :	ip`tcp_time_wait_collector

mi109165 at hancock:~$ cat /etc/power.conf
#
# Copyright 1996-2002 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
#pragma ident	"@(#)power.conf	2.1	02/03/04 SMI"
#
# Power Management Configuration File
#

device-dependency-property removable-media /dev/fb
autopm			default
autoS3			default
cpu-threshold		1s
# Auto-Shutdown		Idle(min)	Start/Finish(hh:mm)	Behavior
autoshutdown		30		9:00 9:00		noshutdown
cpupm  enable poll-mode


Thanks in advance,

- Matt