[humanpuff69]

You should only use virtualization in dedicated server . Not a virtualized environment like vps or even vds .

Openvz give less overhead since it virtualize on higer level but you stuck with 2,6 kernel and linux only . Kvm on the other hand can run any kernel and any os butnit have higher overhead and that is why openvz is cheaper

Docker Is more like container than virtua; ,achine you should able to run on kvm vps . Openvz isnt aupported due to that older 2.6 kernel