[SOLVED] Low CPU usage but temp 95+ oC

[Indigo]

I am running 3 VMs (Ubuntu server, Home assistant and OpenWRT) and every time when i am downloading something with speed more than 1 MB/s the temp rise 90oC+ and fan is running at max speed.








VM #1



VM #2



VM #3




Is this normal?

 

[leesteken]

You are running a mobile CPU. Maybe the laptop cooling system/fan is just not very good, is set to be a silent as possible (and therefore hot) or needs cleaning?

EDIT: The CPU base speed is 1.1GHz and it is turboing to 3.2Ghz, which would obviously cause it to heat up a lot more.

 

[Indigo]

My concern was if this is happening at 15% of CPU what will happen at 100%

BTW will check/replace the thermal paste and see if anything change

 

[leesteken]

My concern was if this is happening at 15% of CPU what will happen at 100%

It will probably keep itself below its thermal limit by slowing down (back to 1.1Ghz or lower if it needs to).

BTW will check/replace the thermal paste and see if anything change

Maybe the CPU is design to run as fast a possible as long as power and temperature allow for it. Modern desktop CPUs tend to turbo to 80, 90'C automatically unless you disable turbo (or whatever it is called).

 

[Indigo]

Wrong alarm, looks like it was much simpler than i thought.
Replace thermal paste & blow with air the coil and temperatures drop down to 40 oC

Initially i though that its has to do something with virtualization of the NIC (any bug in kernel).



Just for info, the system is a NUC 10 i7, to reach the fan it little bit challenge for beginning.

 

[leesteken]

Wrong alarm, looks like it was much simpler than i thought.
Replace thermal paste & blow with air the coil and temperatures drop down to 40 oC

Glad to hear you solved it (and that's it not a Proxmox issue). And I see you already found the Solved option. Thanks!