HP Global Workload Manager 7.0 User Guide

Concepts and terms for using gWLM
Here are some concepts and terms to know when using gWLM:
Workload The collection of processes executing within a single
compartment. The compartment can be an nPartition (npar),
a virtual partition (vPar), a virtual machine provided by HP
Integrity Virtual Machines (hpvm), a processor set (pset), or
a Fair Share Scheduler (fss) group. gWLM manages a
workload by adjusting the system resource allocations for
its compartment. (For background information on nPars,
vPars, virtual machines, psets, and fss groups, refer to the
section “The gWLM management model” (page 8).)
Compartment An npar, a vPar, a virtual machine, a pset, or an fss group
with its resource allocation being managed by gWLM.
Multiple compartments are grouped to form a shared
resource domain, or SRD. The compartments all share the
resources within the SRD. Each compartment holds a
workload and can be in only one deployed SRD. gWLM
manages each workload by adjusting the resource allocation
for its compartment.
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 8)
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 13).
Concepts and terms for using gWLM 7