Web interface showing wrong RAM-Usage of VM

[EwuUwe]

Hello,
the RAM-Usage of my Debain Buster VM is wrong in the Webinterface, at every other machiene ist's right.
Thanks for your help

 

[Dunuin]

Proxmox is showing you RAM usage that is used in reality. Everything that is NOT "free" inside the guest is "used" on the host. If you run free -h inside your VM memory listed as "available" isn't free in reality (but often listed as some kind of free because it could be freed easily by the guest).
So its totally normal if proxmox shows your VM with always 90+% RAM utilization because Debian will eat all RAM for caching that you thow at it.

For Windows VMs with virtio guest tools installed Proxmox won't count RAM used as cache as "used" memory.