Patent attributes
Presenting information to operators of a cluster of physical devices, regarding resources being used by physical machines assigned to physical devices in those clusters. An operator console, coupled to the cluster of physical devices, receives information from those physical devices with respect to use of resources by virtual machines assigned to those physical devices. Each physical device reports virtual machines assigned thereto, and an physical memory assigned to each one. The operator console presents information to the operator regarding use of resources by virtual machines, in a natural and visible way. Physical devices are disposed horizontally to indicate a selected device, and vertically to indicate allocated resources. Virtual machines are disposed with each virtual machine occupying a vertical amount proportional to allocated resources. The graphical interface allows the operator to reallocate virtual machines to physical devices, or reallocate resources to virtual machines.