Ballooning not working properly

[aeminkocal]

No matter the OS, the ballooning seems like its working on the server's page but on the host's side it is not sharing the ram.
So what I mean by that is before I start a guest it looks like this; (there arealready working servers)

After I start this server:

Even though it says it is using up this amount of ram:

On the host it actually uses ram like there is no ballooning enabled.

The ksmtuned service is working.
The guest's configuration:

Proxmox version is 7.0-10.

 

[leesteken]

I cannot see your images, sorry.
Does the VM use PCI(e) passthrough? Then the balloon driver cannot really give back memory to the host or other VMs. This is because you are passing real devices that can initiate Direct Memory Access (DMA) to any part of the VM memory at any time. If the VM memory is not pinned into actual memory, such a DMA could overwrite host or other VM memory.

 

[Dunuin]

I cannot see your images, sorry.
Does the VM use PCI(e) passthrough? Then the balloon driver cannot really give back memory to the host or other VMs. This is because you are passing real devices that can initiate Direct Memory Access (DMA) to any part of the VM memory at any time. If the VM memory is not pinned into actual memory, such a DMA could overwrite host or other VM memory.

Yes, there is PCI passthrough. So you are right with that.

 

[aeminkocal]

I cannot see your images, sorry.
Does the VM use PCI(e) passthrough? Then the balloon driver cannot really give back memory to the host or other VMs. This is because you are passing real devices that can initiate Direct Memory Access (DMA) to any part of the VM memory at any time. If the VM memory is not pinned into actual memory, such a DMA could overwrite host or other VM memory.

Oh so that is the reason. Thanks for the info! I couldn't find such an information anywhere in the internet.