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Missing temperature reports on Intel Alder Lake Processor cores #1048

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PJungkamp opened this issue Jun 29, 2022 · 2 comments · May be fixed by #1352 or #1269
Open

Missing temperature reports on Intel Alder Lake Processor cores #1048

PJungkamp opened this issue Jun 29, 2022 · 2 comments · May be fixed by #1352 or #1269
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bug 🐛 Something isn't working Linux 🐧 Linux related issues
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@PJungkamp
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PJungkamp commented Jun 29, 2022

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

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

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
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BenBE commented Jun 29, 2022

See #806 and #856

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

@BenBE BenBE added bug 🐛 Something isn't working Linux 🐧 Linux related issues labels Jun 29, 2022
@dstahlke
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dstahlke commented Aug 26, 2022

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

@BenBE BenBE added this to the 3.3.0 milestone Feb 4, 2023
leahneukirchen added a commit to leahneukirchen/htop that referenced this issue Dec 25, 2023
leahneukirchen added a commit to leahneukirchen/htop that referenced this issue Dec 25, 2023
@BenBE BenBE modified the milestones: 3.3.0, 3.4.0 Dec 26, 2023
leahneukirchen added a commit to leahneukirchen/htop that referenced this issue Sep 1, 2024
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