Matt Ingenthron wrote:
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?
You might want to run mpstat to see the percent idle. If poll-mode isn't
doing anything for you then your processor is less than 85% idle.
Mark
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
mi109...@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
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