Managing Systems and Workgroups: A Guide for HP-UX System Administrators

Systems and Workgroups
Types of System
Chapter 1 49
PRM Process Resource Manager is a resource management
tool used to control the amount of resources that
processes use during peak system load (at 100% CPU,
100% Memory, or 100% disk bandwidth utilization).
PRM can guarantee a minimum allocation of system
resources available to a group of processes through the
use of PRM groups. Detailed information on PRM can
be found in HP Process Resource Manager User’s Guide
and HP-UX Workload Manager User’s Guide
PSETS Processor Sets allow a multi-processor system to be
partitioned into two or more groups of processors
(CPUs) within a given instance of HP-UX, so that CPU
resources for selected applications or users can be
isolated from those of other applications or users.
vPars If you have a multi-processor system (whether or not it
supports nPartitioning), or if you want to further
subdivide the resources of an nPartition in a machine
that supports nPartitioning (See “nPartitions”), you
can use virtual partitions.
Virtual partitions provide more flexibility than
nPartitions and they provide the same protections
against software/operating system crashes that
nPartitions provide; however, a crash due to a
hardware failure will bring down all operating systems
in all virtual partitions within the machine or
nPartition where the failure occurred.
vPARS can be configured and managed from the
Virtual Partition Manager, or using the command line.
Extensive information on installing and configuring
vPARS is located in Installing and Managing HP-UX
Virtual Partitions (vPars).
The following manpages describe vPARS commands
(for use from the command line):