[SOLVED] PVE 5.2-1 High (6%) cpu use on idle Linux guests

[Kurgan]

I have a quite old Dell R310 with a Xeon X3440 @ 2.53GHz, with the latest Dell BIOS and various firmwares (they should be patched for Spectre/Meltdown). I have installed the latest PVE and set up 2 Linux VMs. (Devuan 2, basically a Debian 9 without systemd)

I have 5% to 6% cpu always in use even when the VMs are totally idle.

I have tried enabing and disabling balooning and quemu agent, but the issue remains.

If I run top inside the VMs, I see basically zero cpu usage.

 

[godlike]

Turn off "Use tabler for pointer" for your VMs and reboot them

 

[Kurgan]

It worked! And since I don't have GUI, it's just fine anyway. Thanks.

Also, no need to reboot.