VZTOP is an utility to check the process usage of the virtual nodes. It comes along with vzprocps package and can be downloaded from http://download.openvz.org/contrib/utils/.
Installation:
rpm -ivh http://download.openvz.org/contrib/utils/vzprocps-2.0.11-6.13.swsoft.i386.rpm
The binary name is vztop. You can run vztop , followed by Shift + E to turn ON the VEID mode. This will show the unique ID’s of the virtual nodes with the top processes.