Understanding IPMI output on PE 1950

Peter Kjellstrom cap at nsc.liu.se
Fri Jun 13 06:50:56 CDT 2008


On Friday 13 June 2008, Stephen Childs wrote:
...
> Temp             | 01h | ok  |  3.1 | -68 degrees C
> Temp             | 02h | ok  |  3.2 | -72 degrees C
> Temp             | 05h | ok  | 10.1 | 40 degrees C
> Temp             | 06h | ok  | 10.2 | 40 degrees C
> Ambient Temp     | 08h | ok  |  7.1 | 20 degrees C
> CPU Temp Interf  | 76h | ns  |  7.1 | Disabled
>
> I can work it out using -v but is there any reason why these shouldn't be
> named properly?

Yes this is very annoying, I have no idea why Dell hasn't fixed it.

> Then the next thing is understanding the CPU temp readings (below). Does
> -68 (+/- -124) actually mean -68 + 124 == 56 degrees C.

No, this is simply the raw figure reported by modern Intel procs. It's to be 
interpreted as 68 Kelvin/Celcius degrees below critical. That is, what 0 is 
could differ between CPUs...

/Peter
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