[ntp:questions] Monitoring FreeBSD temperatures remotely

unruh unruh at wormhole.physics.ubc.ca
Sun Apr 11 14:27:35 UTC 2010

On 2010-04-11, David J Taylor <david-taylor at blueyonder.co.uk.invalid> wrote:
> I'm trying to correlate the few microseconds NTP offset transient I get in 
> the morning with the temperature of the system (and most likely with the 
> rate of change of temperature).  There seems to be a triangulare-shaped 
> ~7microsecond transient lasting for about an hour when the heating 
> switches on:
>   http://www.satsignal.eu/mrtg/performance_pixie.php

At the same time, the cpu switches off, network traffic disappears, etc.
Something weird is happening that does not seem to be temperature.

> Do any of the FreeBSD experts out there know if, and how, I might be able 
> to get a temperature measurement of my FreeBSD 8.0 system via SNMP? 

The intel motherboards use a weird system of sensor reporting, that the
lmsensors people had not figured out at least as of a year ago. I am
familiar with linux, but I suspect freebsd is the same. 
mbmon, healthd are apparently freebsd systems for perhaps getting the

> Ideally, motherboard temperature (Intel D410PT) but disk or CPU 
> temperature would be a start.  I have discovered that the 2.5-inch disk it 
> uses is SMART enabled and does report disk temperature, so tying that in 
> with SNMP so that I can monitor remotely would be a start.....
> My programming skills are mor ein Delphi than C/C++, I'm afraid.
> Thanks,
> David 

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