Dynamically move processing power

The ability to move processor power dynamically becomes important when you need to adjust to changing workloads.

Processors have minimum and maximum values associated with them. These values enable you to establish a range within which you can dynamically move the resource without needing to restart the logical partition. Minimum values dictate what is required to restart the partition. A minimum value of zero is valid. A partition with zero processors or processing units is not functional.

For both shared and dedicated processors you can specify a minimum value equal to the minimum amount of processing power needed to support the logical partition. The maximum value must be less than the amount of processing power available on the system. If you change either the minimum or maximum value, it will require you to restart the entire partition. If the minimum value is not met for all logical partitions, only the primary will restart.

Note for Partitions Not Using DB2 UDB Symmetric Multiprocessing (SMP): Changing processor resources dynamically does not affect the number of tasks used to rebuild database access paths. To apply the processor resource change to database access paths, you need to restart the partition. If you have SMP enabled, no restart is required.

To move a dedicated processor from one logical partition to another partition using My Connections, follow these steps:

  1. In iSeries™ Navigator, expand My Connections or your active environment.
  2. Select the primary partition of the system.
  3. Expand Configuration and Service and select Logical Partitions.
  4. Right-click the Logical Partition and select Configure Partitions. You are now working in the Configure Logical Partitions window.
  5. Select the partition from which you would like to move dedicated processors.
  6. Right-click Dedicated Processors and select Move.
  7. Specify the number of dedicated processors to move in Amount to move. This value must be less than the number of processors the logical partition currently has. The Amount after move values for both the source and receiving partitions must fall within the minimum/maximum ranges specified for dedicated processors. Also, any logical partition that is using dedicated processors, must have at least 1 dedicated processor.
  8. Select the partition to receive the dedicated processors in Move to -- Logical partition
  9. Click OK to move the dedicated processors you specified.

To move a dedicated processor from one logical partition to another partition using the service tools window, follow these steps:

  1. In iSeries Navigator, select My Connections or your active environment.
  2. Select Open iSeries Navigator service tools window in the Taskpad window. If the Taskpad window is not displayed, select View and select Taskpad.
  3. Enter the IP address of the service tool network interface to which you want to connect. Click OK.
  4. You will be prompted for your Service Tools User ID and user password.
  5. Expand the system name select Logical Partitions.
  6. Right-click the logical partition and select Configure Partitions. You are now working in the Configure Logical Partitions window.
  7. Select the partition from which you would like to move dedicated processors.
  8. Right-click Dedicated Processors and select Move.
  9. Specify the number of dedicated processors to move in Amount to move. This value must be less than the number of processors the logical partition currently has. The Amount after move values for both the source and receiving partitions must fall within the minimum/maximum ranges specified for dedicated processors. Also, any logical partition that is using dedicated processors, must have at least 1 dedicated processor.
  10. Select the partition to receive the dedicated processors in Move to -- Logical partition
  11. Click OK to move the dedicated processors you specified.

To move a dedicated processor from one logical partition to another using Management Central, follow these steps:

  1. In iSeries Navigator, expand Management Central.
  2. ExpandSystems with Partitions.
  3. Select the physical system that has the logical partition with which you want to work.
  4. Right-click the logical partition and select Configure Partitions. You are now working in the Configure Logical Partitions window.
  5. Select the partition from which you would like to move dedicated processors.
  6. Right-click Dedicated Processors and select Move.
  7. Specify the number of dedicated processors to move in Amount to move. This value must be less than the number of processors the logical partition currently has. The Amount after move values for both the source and receiving partitions must fall within the minimum/maximum ranges specified for dedicated processors. Also, any logical partition that is using dedicated processors, must have at least 1 dedicated processor.
  8. Select the partition to receive the dedicated processors in Move to -- Logical partition
  9. Click OK to move the dedicated processors you specified.

To move shared processing power from one logical partition to another using My Connections, follow these steps:

  1. In iSeries Navigator, expand My Connections or your active environment.
  2. Select the primary partition of the system.
  3. Expand Configuration and Service and select Logical Partitions.
  4. Right-click the Logical Partition and select Configure Partitions. You are now working in the Configure Logical Partitions window.
  5. Select the partition from which you would like to move shared processing power.
  6. Right-click Shared pool processors and select Move.
  7. Select the units with which you want to work inDisplay units in -- Processor pool . If you need more information on this field, click Help.
  8. Specify the amount of shared processing power to move in Amount to move. This value must be less than the current amount of shared processing power available to the logical partition. The Amount after move values for the source must fall within the minimum/maximum ranges specified for shared processing power for both partitions.
  9. Select the partition to receive the dedicated processors in Move to -- Logical partition.
  10. Click OK to move the shared processing power you specified.

To move shared processing power from one logical partition to another using the service tools window, follow these steps:

  1. In iSeries Navigator, select My Connections or your active environment.
  2. Select Open iSeries Navigator service tools window in the Taskpad window. If the Taskpad window is not displayed, select View and select Taskpad.
  3. Enter the IP address of the service tool network interface to which you want to connect. Click OK.
  4. You will be prompted for your Service Tools User ID and password.
  5. Expand the system name select Logical Partitions.
  6. Right-click the logical partition and select Configure Partitions. You are now working in the Configure Logical Partitions window.
  7. Select the partition from which you would like to move shared processing power.
  8. Right-click Shared pool processors and select Move.
  9. Select the units with which you want to work in Display units in -- Processor pool . If you need more information on this field, click Help.
  10. Specify the amount of shared processing power to move in Amount to move. This value must be less than the current amount of shared processing power available to the logical partition. The Amount after move values for the source must fall within the minimum/maximum ranges specified for shared processing power for both partitions.
  11. Select the partition to receive the dedicated processors in Move to -- Logical partition.
  12. Click OK to move the shared processing power you specified.

To move shared processing power from one logical partition to another using Management Central, follow these steps:

  1. In iSeries Navigator, expand Management Central.
  2. Expand Systems with Partitions.
  3. Select the physical system that has the logical partition with which you want to work.
  4. Right-click the logical partition and select Configure Partitions. You are now working in the Configure Logical Partitions window.
  5. Select the partition from which you would like to move shared processing power.
  6. Right-click Shared pool processors and select Move.
  7. Select the units with which you want to work in Display units in -- Processor pool. If you need more information on this field, click Help.
  8. Specify the amount of shared processing power to move in Amount to move. This value must be less than the current amount of shared processing power available to the logical partition. The Amount after move values for the source must fall within the minimum/maximum ranges specified for shared processing power for both partitions.
  9. Select the partition to receive the dedicated processors in Move to -- Logical partition.
  10. Click OK to move the shared processing power you specified.