GSoC2007: cnst-sensors.2007-09-13.patch

[mato]

Kevin Oberman wrote:
>> From: martinko <gamato at users.sf.net>
>> Date: Tue, 25 Sep 2007 20:35:44 +0200
>> Sender: owner-freebsd-current at freebsd.org
>>
>> Chuck Swiger wrote:
>>     
>>> The threshold temperature varies depending on the exact part, but is 
>>> generally around 65 Celsius-- and is hot enough that you don't really 
>>> want to encounter it in normal operation, as it's a sign that cooling is 
>>> not adequate for the system to continue to operate safely at full 
>>> speed.  Most of the Intel CPUs also include a second thermal circuit 
>>> called THERMTRIP which fires around 95 Celsius which will shut the CPU 
>>> down entirely to prevent a catastrophic failure.
>>>
>>>       
>> I've got Pentium-M at 2GHz and when fully loaded it heats up to 79 
>> Celsius.  Could it be OK or do I have a faulty laptop ?
>>     
>
> My Pentium-M 2GHz system will get well above 80C when doing big builds
> and this is well below the defined PSV (94.5C) and CRT (99C)
> levels. These things can run very hot and be perfectly happy.
>
> OTOH, it might be time to clean the heatsink in the machine. That can
> hurt heat transfer as a machine gets older.
>
> FWIW, the spec on the Pentium-M 2GHZ system is 105C, so CRT at 99 looks
> right.
>   

Mine says:

hw.acpi.thermal.tz0._PSV: 105.0C
hw.acpi.thermal.tz0._CRT: 110.0C

This is Asus W1N laptop.