Proxmox vm gui performance

[noahpop77]

I had a quick question. (I apologize if it is a bit nooby). I havent used proxmox a ton for a while now, maybe the last time was like 2017. I was wondering if the gui for the VMs you may have was laggy or snappy and responsive.

 

[datschlatscher]

What exactly do you mean with "VM GUI"? The desktop environment in the GUI?

laggy or snappy and responsive.

I am sure you realize that none of these are very objective ways to quantify how a VM (desktop) performs, but I think I get your sentiment. While the default experience in any VM will most likely be rather "unsnappy" because in such cases everything needs to be emulated, which makes any visual processes very slow, there are some settings that can improve this, namely:

• GPU passthrough allows a VM to use a graphics card supplied by the host directly
• The VirGL display setting allows for the VM to offload some workloads to the hosts graphics card which can speed up anything on the desktop quite a lot, as far as I've seen from internal testing.

 

[Dunuin]

Jup, hardware acceleration of a GPU will help a lot. AS an addition to what datschlatscher said:
When using GPU passthrough you need one dedicated GPU for each VM, in case you are not doing some hacky stuff with vGPU.
And as far as I understand VirGL will only work with Linux and not Windows.

So not that easy to get a snappy virtualized Windows/MacOS.