2.3.4 Installing PFM - Agent for Platform in a virtualized system
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, Hitachi Compute Blade logical partitioning feature, 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.
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Because the host OS for VMware is a special OS for managing virtualized functionality, operation of applications is not guaranteed. Since Hitachi Compute Blade logical partitioning feature creates an off-disk management area called an SVP (Service Processor) frame, data collected by PFM - Agent for Platform cannot be saved as a database in this management area.