Red Hat Bugzilla – Bug 451869
CPU core temp reported below ambient
Last modified: 2015-03-04 20:20:02 EST
Description of problem: The temperature reported for the CPU is below ambient,
and the temperatures for core0 and core1 are wildly different, but they are on
the same die.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Adapter: PCI adapter
Core0 Temp: +30.0°C
Core1 Temp: +19.0°C
Additional info: CPU is a Dual-Core AMD Opteron 1210
This is to be expected, the on die temperature diode's of AMD's are wildly
inaccurate (the process in which the silicium is processed from raw silicium to
a processor is not optimised to generate a good temperature sensor but to
generate a good processor).
I can send this report to the author of the k8temp driver if you want, but I
expect the answer to be the same (I'm subscribed to the lm_sensors mailing-list
and this is sort of a FAQ).
Eh, good enough for me.. I would rather have the good processor.