[ILUG] lm sensors..

[John P. Looney]

On Thu, May 17, 2001 at 08:25:04PM +0100, Niall O Broin mentioned:
> However, the temperature sensors are usu. surface mounted on the board e.g.
> under the processor so I would have though 31.0°C sounds reasonable esp.
> given current ambient temperatures (you're not in Arizona  any more, John)
> although 13.0°C would seem quite low.
> 
> However, I don't understand what they mean by 
> 
> (limit = +60°C, hysteresis = +50°C)
> 
> limit is understandable, but hysteresis ? I do know what hysteresis is, but
> in this context ? In my ignorance, I would imagine that hysteresis in a
> temperature sensor is a bad thing, especially of that magnitude. Obviously
> I'm misunderstanding them, but what do they mean ?

 From reading Sun documentation after an E3000's started screaming because
the air conditioning failed, if I remember correctly, you get two reasons
to scream - if the limit is reached, or if it stays at the "hysteresis"
point for a long time. I'm not quite sure what the "long time" is,
however.

> >  I just snarfed this;
> >     http://www.sauerland.de/~toyland/configs/sensors.conf.html
> > and ran with it, and expected it to work. Mutter.
> One thing to try is have the machine running a while so it's at its normal
> temperature, then shut it down and quick as you can, get to the BIOS sensor
> readings page and check what you see there for comparison with what sensors
> reports.

 As I remember, the bios reported 50C...must check...

Kate

-- 
 When I say 'free', I mean 'free': free from bond, of chain or command: 
to go where you will, even to Mordor, Saruman, if you desire. " 
    -- Gandalf, paraphrasing the choice between Free and Non-free software