Ballooning device problems

cshifer12

New Member
Jun 8, 2025
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I have 64 GB RAM and 2 VMs with 20 GB each. The problem is that if i enable balloon device for these VMs it somehow does not work.

Both VMs are debian, they both have virtio balloon driver installed. When i configure minimum 8 GB and max 20 GB. Whenever inside VM usage is 8 GB it slows down a lot. I had to turn off balloon and it uses all 40 GB right away.
 
Hi,

Did you have QEMU guest agent installed and running inside the VM?
It can improves communication between host and guest for ballooning decisions.