[ovirt-users] memory overcommit in oVirt

Hello, I thought memory overcommit feature in oVirt utilizes host's overcommit features by manipulating kernel variables like vm.overcommit_ratio, vm_overcommit_memory. but, I've just confirmed that those variables didn't change at all. I wonder if oVirt's overcommit really has nothing to do with that of host and if so, how does oVirt manage memory overcommit.