Missing temperature reports on Intel Alder Lake Processor cores

[pjungkamp]

I have a Lenovo Yoga 9 14IAP7 with an Intel Core i5-1240P.

htop only shows temperatures for the 0, 4, 8 & 12 cores.

The temperatures tempX from sensors -u coretemp-isa-0000 seem to correspond to the cpu id rather than the processor of a core in /proc/cpuinfo.

Is this a new quirk of Alder Lake chips (e.g. due tho the big-little design)?

[BenBE]

See #806 and #856 …

htop relies on libsensors to provide reasonable values. Unfortunately libsensors is not reasonable enough …

[dstahlke]

The issue might be that sensors indexes by core id, and these have a strange mapping to processors. For some reason core id increments by 4, with two processors per core (hyperthreading). That's for P-cores. For E-cores there is one core id per processor. These match between sensors and cpuinfo. Should htop be tying sensor values to cpuinfo core id?

Here is an abbreviated demonstration:

$ sensors
Core 0:        +39.0°C  (high = +100.0°C, crit = +100.0°C)
Core 4:        +41.0°C  (high = +100.0°C, crit = +100.0°C)
Core 8:        +42.0°C  (high = +100.0°C, crit = +100.0°C)
... etc ...

$ grep 'core id' /proc/cpuinfo
core id         : 0
core id         : 0
core id         : 4
core id         : 4
core id         : 8
core id         : 8