The software which runs on the PPU system consists mainly
of a “PPU Agent”. The PPU Agent reports the following
information to the utility meter:
System-identification
information
Hardware-partition information
Virtual-partition information
(HP-UX only)
HPVM Integrity Virtual Machines
guest information (HP-UX only)
Per-core-utilization information
for the operating system instance
NOTE: The PPU Agent is the software component that provides
information to the utility meter. On HP-UX systems, this component
is implemented as a daemon (“ppud” daemon), on
OpenVMS as a process (PPU_SERVER), and on Windows systems, this component is implemented
as a service (“PPU Service”).
You interact with the PPU Agent when you need to do any of
the following: view PPU system settings, specify a utility meter,
specify a system identifier, set a cap limiting the number of active
cores (HP-UX and OpenVMS only), or test the connection to the utility
meter.
IMPORTANT: If the connection to HP is broken, and no usage
information is sent to HP, HP may assume 100 percent core utilization.
Utility Meter
To track the actual core usage, the utility meter receives
reports from the PPU Agent. The utility meter is a dedicated appliance
(generally an IA-32 system running Linux) connected to your network
and preloaded with HP software. The utility meter is installed and
configured by your HP service representative. One utility meter
can support up to 100 PPU systems or partitions.
Usage Database
The usage database receives information from the utility meter.
The information is then aggregated and posted to the PPU web portal
for your viewing. See “PPU
Web Portal” for
details on the PPU web portal.
NOTE: If usage data for any partition in the complex is not
received for any given day, an e-mail notification is sent to your
PPU system-contact’s e-mail address. This e-mail address
is configured in the utility meter’s initial setup.
