XCP 8.3: wsproxy and other swap... why?

[rvl]

Hi,

Hello, I have installed a small system with some virtual machines. I have noticed that some processes tend to swap despite there being free RAM.
I have been unable to understand why this is happening. Has anyone else had the same experience and can help me understand?
Thank you.
Luca
I have attached a screenshot of the top command with the swap column sorted.

P.S. The system is xcp-ng 8.3 with all the latest updates.

[rvl]

I made a list of processes with a small bash script that I am attaching here