Managing System Power Services

In Oracle Solaris 11 release, power management configuration has moved into an SMF configuration repository. The new poweradm command is used to manage system power management properties directly rather than using a combination of power-related command, daemon, and configuration file. These changes are part of a wider set of changes to modernize the power management framework in Oracle Solaris 11.

The following power management features are no longer available:

• /etc/power.conf

• pmconfig and powerd

• Device power management

Two new properties describe the power configuration that manage time components:

• time-to-full-capacity – Defines the maximum time the system is allowed to reach its full capacity, from any lower-capacity or less-responsive state, while the system is active.

• time-to-minimum-responsiveness – Defines how long the system is allowed to return to its active state.

You can display poweradm properties by using the following command:

# poweradm list
active_control/administrative-authority      smf=platform, current=platform
suspend/suspend-enable                       smf=false, current=false
active_config/time-to-full-capacity          platform=250, current=250
active_config/time-to-minimum-responsiveness platform=0, current=0
disabled                                     platform=false

In the above output, the active_control/administrative-authority indicates the source of the configuration with two settings:

• platform – Configuration for power management comes from the platform. This is the default value.

• smf – Allows the other power management properties to be set using the poweradm command.

If you previously enabled S3-support in the /etc/power.conf file to suspend and resume your system, similar poweradm syntax is:

# poweradm set suspend-enable=true

The suspend-enable property is set to false by default.

Use the following syntax to disable power management:

# poweradm set administrative-authority=none

Disabling the following SMF power management service does not disable power management:

online         Sep_02   svc:/system/power:default

For more information, see poweradm(1M).

How to Recover from Power Service in Maintenance Mode

If administrative-authority is set to smf before both time-to-full-capacity and time-to-minimum-responsiveness have been set, the service will go into maintenance mode.

1. Become an administrator.
2. Set administrative-authority to none.

   # poweradm set administrative-authority=none

3. Set both time-to-full-capacity and time-to-minimum-responsiveness to their desired values.

   # poweradm set time-to-full-capacity=value
   # poweradm set time-to-minimum-responsiveness=value

4. Clear the service.

   # svcadm clear power

5. Set administrative-authority to smf.

   # poweradm set administrative-authority=smf