You can use a workload management tool to manage resources
that your logical partitions use. To do so, you must use the Integrated Virtualization Manager to add the client
logical partition to the partition workload group.
A partition workload group identifies a set
of logical partitions that are located on the same physical system.
Workload management tools use partition workload groups to identify
which logical partitions they can manage. For example, Enterprise Workload Manager™ (EWLM)
can dynamically and automatically redistribute processing capacity
within a partition workload group to satisfy workload performance
goals. EWLM adjusts processing capacity based on calculations that
compare the actual performance of work processed by the partition
workload group to the business goals defined for the work.
Workload
management tools use dynamic logical partitioning (DLPAR) to make
resource adjustments based on performance goals. For example, the
partition management function of EWLM adjusts processor resources
based on workload performance goals. Thus, EWLM can adjust the processing
capacity for Linux logical partitions.
Limitations: - Do not add the management partition to the partition workload
group. To manage logical partition resources, workload management
tools often require that you install some type of management or agent
software on the logical partitions. To avoid creating an unsupported
environment, do not install additional software on the management
partition.
- For Linux partitions, the DLPAR
support of the operating system is not the same as the DLPAR capabilities
that are in the partition properties for a logical partition. The
DLPAR support of the operating system reflects what each operating
system supports with regard to DLPAR functions. Linux support DLPAR of
processors, memory, and I/O. The DLPAR
capabilities that are shown in the partition properties for a logical
partition reflect a combination of the following factors:
- A Resource Monitoring and Control (RMC) connection between the
management partition and the client logical partition
- The DLPAR support of the operating system
- If a logical partition is part of the partition workload group,
you cannot dynamically manage its resources from the Integrated Virtualization Manager because the workload
management tool is in control of dynamic resource management. Not
all workload management tools dynamically manage processor, memory, and I/O resources. When you implement a workload
management tool that manages only one resource type, you limit your
ability to dynamically manage the other resource types.
To add a logical partition to the partition workload group,
complete the following steps in the Integrated Virtualization Manager:
- From the navigation area, select View/Modify
Partitions under Partition Management. The View/Modify Partitions page displays.
- Select the logical partition that you want to include in
the partition workload group.
- From the Tasks menu, select Properties. The Partition Properties page is displayed.
- Select the General tab, then select Partition
workload group participant, and click OK.
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