To enable power management (PM), you first need to set the PM policy in the Oracle Integrated Lights Out Manager (ILOM) 3.0 firmware. This section summarizes the information that you need to be able to use PM with the Oracle VM Server for SPARC software.
For more information about ILOM, see the following:
“Monitoring Power Consumption” in the Oracle Integrated Lights Out Manager (ILOM) 3.0 CLI Procedures Guide
Oracle Integrated Lights Out Manager (ILOM) 3.0 Feature Updates and Release Notes
The power policy governs system power usage at any point in time. The following power policies are supported, assuming that the underlying platform has implemented PM features:
Disabled. Permits the system to use all the power that is available.
Performance. Enables one or more of the following PM features that have a negligible affect on performance:
CPU core auto-disabling
CPU clock cycle skip
CPU dynamic voltage and frequency scaling (DVFS)
Coherency link scaling
Oracle Solaris Power Aware Dispatcher (PAD)
Elastic. Adapts the system power usage to the current utilization level by using the PM features described in the performance section. For example, the power state of resources is reduced as utilization decreases.