High RAM usage

[flexelem]

Hello,

I don't understand why this is so. Although nothing is running in the VM, high ram usage appears in the Proxmox panel. What could be the reason for this?

 

[leesteken]

Filesystem cache is not counted by the operating system inside the VM, but Proxmox does count it as used memory (as it does take memory and Proxmox cannot know it is cache).
Please see the other threads on this forum about (high) memory usage.

 

[B.Otto]

It is not necessarily bad if Proxmox shows high RAM usage, because the Hypervisor cannot see how much RAM the VM actually needs. Since Linux (and most OSes these days) use their free RAM as cache, it might appear 'from the outside' that the RAM usage is very high.

You could try to install the qemu guest agent inside the VM and enable it in the VM options. RAM ballooning could also be an option (needs the guest agent too).