[SOLVED] Higher power consumption since Proxmox kernel update 6.14.11-2

J

jmcruvellier

New Member
Apr 30, 2024
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Hi everyone,

I updated this morning Proxmox kernel to 6.14.11-2 on my HA cluster 3 nodes.
Since then, I noticed an increase of the power consumption (from ~70W to ~80W):

1757756815139.png

Is there anyone else experiencing the same behavior?

Thanks in advance.

BR,

Jean-Marc
 
Take a power shart over 30 days of work, and then compare. it's only a power glitch.
 
news said:
Take a power shart over 30 days of work, and then compare. it's only a power glitch.
Click to expand...
I'm monitoring power consumption on daily basis, that's why I'm reporting this abnormal behavior
You can see the difference during last 30 days on 1 node :
1757758579286.png
 
Check if your microcode is updated.

In my case, I've noticed the increase in CPU usage acoustically ;-)

I also have a thread with the explanation:
M

Thread 'Kernel 6.8.12-14 & i5-7500T = 100 % CPU0 (SOLVED)'

Hello,

A few days ago I updated my Proxmox server, and since then the fan has been much louder than usual, even audible from several meters away.

I spent all morning today looking into what it could be. It was clear that if the fan was running "full blast," it was due to the temperature. And the temperature was due to the CPU usage.

Indeed, the CPU on all four cores was at 25% (the CPU0 core was always at 100%). And it wasn't a Proxmox process or one of the services I run on it. It was something in the kernel.

Investigating, I saw that going back to the previous kernel everything works...
 
uzumo said:
If the load is increasing due to processing affected by vulnerability countermeasures, that might be normal.

CVE-2025-40300

https://github.com/proxmox/pve-kernel/tree/master/patches/kernel
Click to expand...
This does indeed seem related to this patch.
I just saw that the CPU on 2 nodes is above 30% while it was below 10% (averages) before the update. On these two nodes, there are VMs, not on the 3rd.
Which would mean that this is closely related to the CVE-2025-40300 patch
 
After more investigation, the issue was not directly related to Proxmox kernel update, but to Home Assistant 2025.9.2 QEMU update...
After a rollback of my 2 HAOS VMs to 2025.9.1, everything went back to normal1757769529080.png
 
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