Changing the PVU per core value

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9.2.3 Available from 9.2.3.

The number of processor value units is assigned per processor core based on the information that is provided in the PVU table. It might happen that the value that is assigned to a processor in your environment is incorrect. In such case, manually change the PVU per core value to ensure that subcapacity licenses are properly calculated. When the problem that causes incorrect detection of the PVU value is solved, reset the PVU per core to the value that is specified in the PVU table.

Before you begin

An icon representing a user. You must have the Manage Hardware Inventory permission to perform this task.
Important: Ensure that manually changing the PVU value is justified in your case, for example by consulting IBM Support. Changing the PVU per core value influences correctness of PVU reports.

About this task

  • To properly calculate PVU values for Linux on IBM Power Systems, set the PVU per core value to 70. The solution is applicable only when Linux runs on all LPARs that exist on a single server. The solution is not applicable when various operating systems run on LPARs that exist on a single server.
  • Changing the PVU per core value is not possible for computers with the No Scan Data status. Capacity data is not available for such computers, and thus it is not possible to determine whether the PVU per core value was properly assigned or requires changing.

Procedure

  1. In the top navigation bar, click Reports > Hardware Inventory.
  2. Click the pencil in the PVU per Core column, and click Change PVU per Core.
    Changing the PVU per Core value.
  3. Provide the PVU value that you want to assign to the processor.
    It will be changed for the server that is listed in the Server ID column and all virtual machines that are hosted on that server.
  4. Provide a justification for changing the PVU value, for example a case number. The justification is listed on the Audit Trail report. Then, click Change.

Results

The changed PVU per core value is displayed on the Hardware Inventory report. To reflect the change on other reports, recalculate the data. Open the All Metrics report, and click Recalculate.

What to do next

When the problem that causes incorrect detection of the PVU value is solved, reset the changed PVU per core value to the value that is provided in the PVU table. To do this, click the pencil in the PVU per Core column, and click Reset PVU per Core. Then, click Reset. The PVU per core value is reset on the server that is listed in the Server ID column and all virtual machines that are hosted on that server.
Resetting the PVU per core value.