Enabling Dynamic Processor Deallocation

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If your machine supports Dynamic Processor Deallocation, you can use SMIT or system commands to turn the feature on or off.

Dynamic Processor Deallocation is enabled by default during installation, provided the machine has the correct hardware and firmware to support it.

SMIT fastpath procedure

  1. With root authority, type smit system at the system prompt, then press Enter.
  2. In the Systems Environment window, select Change / Show Characteristics of Operating System.
  3. Use the SMIT dialogs to complete the task.
To obtain additional information for completing the task, you can select the F1 Help key in the SMIT dialogs.

Commands procedure

With root authority, you can use the following commands to work with the Dynamic Processor Deallocation:
  • Use the chdev command to change the characteristics of the device specified. For information about using this command, see chdev in the Commands Reference, Volume 1.
  • If the processor deallocation fails for any reason, you can use the ha_star command to restart it after it has been fixed. For information about using this command, see ha_star in the Commands Reference, Volume 2.
  • Use the errpt command to generate a report of logged errors. For information about using this command, see errpt in the Commands Reference, Volume 2.