For my home testing enviroments I use a lot of openVZ containers on older 32 bit hardware with Proxmox VE. Here are some useful commands for interacting directly with the openVZ subsystem on the hypervisor console.
vzlist - provides a listing of openVZ containers vztop - similar to esxtop for openvz vzctl enter VM#- drops to the console of the container vzctl start VM# - starts container vzctl stop VM# - stops container
vzcalc - resource calc for container
vzdump - backup utility for continers
vzrestore - restoration of containers