HP Insight Global Workload Manager 6.0 Software: User Guide

Shared Resource Domain (SRD) A collection of compartments that can share system
resources. The compartments can be npars, vpars, virtual
machines, psets, or fss groups. For example, a server
containing npars can be an SRD—as long as the
requirements in “The gWLM management model”
(page 10) are met. Also, a server or an npar divided into
vpars can be an SRD for its vpar compartments. Similarly,
a server or an npar divided into virtual machines can be
an SRD for its virtual machine compartments.
gWLM allows you to nest compartments. gWLM then
manages resources for the various levels of compartments.
Policy A collection of settings that instruct gWLM how to manage
a workload’s resources. For example, a policy can indicate
the amount of CPU resources a workload owns (and is
allocated when needed), as well as how much of those
resources the workload can lend to other workloads.
A single policy can be associated with, or applied to,
multiple workloads.
For more information on policies, see “Policy types”
(page 15).
Mode Two modes are available: advisory and managed. Advisory
mode allows you to see what CPU resource requests gWLM
would make for a workload—without actually affecting
resource allocation.
Advisory mode is not available for SRDs containing virtual
machines, psets, or fss groups due to the nature of these
compartments.
Use this mode when creating and fine-tuning your policies.
Once you are comfortable with your policies, use managed
mode to have gWLM automatically adjust the resource
allocations for your defined workloads.
You can only set the mode on the SRD level. All workloads
within an SRD operate in the same mode, either advisory
or managed.
Deploy Enable gWLM control of an SRD.
Deploying an SRD in managed mode enables gWLM
control of resource allocation within the SRD. For example,
in an SRD based on a vpar that has psets for compartments,
deploying an SRD in managed mode allows gWLM to
actively migrate cores among psets. (A core is the actual
data-processing engine within a processor. A single
processor might have multiple cores.)
When deploying an SRD in advisory mode, gWLM simply
reports what the allocation would be—without actually
affecting resource allocations on a system.
Advisory mode is not available for SRDs containing virtual
machines, psets, or fss groups due to the nature of these
compartments.
Concepts and terms for using gWLM 9