In a virtualized system, each type of resource is basically managed by virtualized functionality (software or hardware), and configured by being allocated to different logical partitions. The managed resources include processors, memory, disks, and networks.
These resources can be obtained as performance data on the logical partition on which PFM - Agent for Platform is installed.
Some virtualized systems distinguish between guest operating systems and host operating systems. Examples of such systems include VMware/KVM, Virtage, and other software-based virtualizations. The host OS manages the guest OS, and the guest OS runs on the host OS. In such cases, PFM - Agent for Platform is installed on the guest OS to monitor performance.
PFM - Agent for Platform collects performance data on the installed logical partition, or guest OS.