Higher CPU usage reported by Proxmox than the actual VM's

[xzivzs]

Hey there,

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System :
Proxmox v8.1.3
2 LXC's
4 VM's : 3 ubuntu servers , 1 windows server
- 2 ubuntu servers with 6 dockers running , been a year roughly with 1% CPU average for both even less
- 1 ubuntu server with only 1 docker running , not even 1% CPU usage
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I did up to date my Proxmox server yesterday to the latest updates (I was especially concerned about the ZFS data corruption issue). Everything went accordingly.
24h later, this morning, I noticed that 2 of my Ubuntu servers, the ones with 6 dockers running, have both constant 50% CPU usage reported by Proxmox. Wen I check with "Top" or "htop" inside the VM though the CPU utilization is roughly 1 - 2%. I checked all the process and nothing stands out.
I'm running Grafana to monitor my Proxmox server and I noticed the CPU usage jumped for both server's at 3am. I quickly linked that time with the time I'm running a backup of my Proxmox LXC's and VM's (backup job starting at 3am). Since I did reboot both server's and now I went back to regular CPU usage ~1% but I'm wondering if you guys did experience the same thing lately ?

I'll keep monitoring it after my next backup tomorrow at 3am and see if the CPU still get stuck at 50% usage for both of these servers.

Cheers!
xzi.

 

[Neobin]

https://forum.proxmox.com/threads/p...le-vms-are-idle-at-0-5-cpu.138140/post-616210

 

[Nesin]

I have the same problem too. I did

apt install pve-qemu-kvm=8.1.2-4

in the console and am waiting for the backup schedule.

 

[Nesin]

Unfortunately, grub broke after this command