michael wrote:
On Fri, 2007-06-22 at 11:55 -0500, Mike McCarty wrote:
michael wrote:
I've tried unsuccessfully to monitor my dual Xeon box but lm-sensors
doesn't seem to detect anything. I've a Intel Server Board SE7320SO2
Even if it did, unless you've calibrated the thing you won't know
the temp.
eh?
Unless you calibrate the sensors, you will not get a reliable
indicaton of what the temperature is.
What's wrong with simply sticking a thermometer in there? I'm talking
about a remote-reading one, like those intended to feed a wire through
your door or window and hang on the roofline or whatever. That will
give you a calibrated temp reading, not an arbitrary meaningless
number.
I was hoping I didn't have to resort to that
If you don't use accurate tools, you won't get accurate results.
The sensors in these machines, unless you calibrate them yourself
with a thermometer, are NOTORIOUSLY INACCURATE. Many of them
simply use a thermistor/resistor voltage divider. This gives a
seriously curved temp vs voltage relationship. This is not a
problem, but requires special handling to get accurate temp
conversion. The simple lmsensors report is going to be incorrect
on such machines, as it presumes a straight-line relationship.
Mike
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