J?rgen Keil wrote:
>> i've a Dell Precision M70 laptop, and os2009.06, b111
>> It works perfectly so far, but since some weeks, the fans are running
>> constantly after 1-2 hours, and the machine is hot, even if i'm using
>> only terminals.
>>
>> Looking at powertop, it seems to me that the cpu is running only 20% of
>> the time, so i don't understand why the fans are running?
>> OpenSolaris PowerTOP version 1.1
>>
>> Cn Avg residency P-states (frequencies)
>> C0 (cpu running) (19.7%) 1729 Mhz 100.0%
>> C1 3.8ms (80.3%)
>
> I suspect the problem is that the pentium M cpu
> is always running at full speed, 1.7GHz.
>
> Unfortunately there is no official enhanced speedstep
> support in opensolaris for older intel / amd cpus.
>
> You may want to experiment with Casper's frkit.
> I think it does support enhanced speedstep on older
> single core processors, so it might work on your
> laptop; it should lower power usage and reduce
> the heat produced by the cpu...
i'm very impressed, it works!
i change the speed:
henry at delljm:~$ pfexec powernowadm 3
State MHz Watts Volts
0 1733 27.0 1.356 (current)
1 1333 21.0 1.212
2 1067 17.0 1.100
3 800 13.0 0.988 (new)
CPU set to 800 MHz (13.0 Watts)
and the result is immediat:
henry at delljm:~$ pfexec Downloads/tzmon.d
temp 328.7?K/55.5?C, crit hot 371.2?K/98.0?C, \_TZ_.THM_
temp 326.7?K/53.5?C, crit hot 371.2?K/98.0?C, \_TZ_.THM_
temp 325.7?K/52.5?C, crit hot 371.2?K/98.0?C, \_TZ_.THM_
temp 325.7?K/52.5?C, crit hot 371.2?K/98.0?C, \_TZ_.THM_
and the fans became quasi silent!
only powertop doesn't give everything right:
Cn Avg residency P-states (frequencies)
C0 (cpu running) (67.3%) 1729 Mhz 100.0%
C1 2.5ms (32.7%)
Wakeups-from-idle per second: 128.7 interval: 5.3s
Power usage (ACPI estimate): 3.459W (discharging: 1.0 hours)
Top causes for wakeups:
139.7% (179.9) <kernel> : genunix`cv_wakeup
77.6% ( 99.9) <kernel> : genunix`clock
18.2% ( 23.4) <interrupt> : i8042#0
11.7% ( 15.1) <kernel> : uhci`uhci_handle_root_hub_status_change
7.6% ( 9.8) <kernel> : ata`ghd_timeout
thanks for your help,
gerard
