HP Process Resource Manager User's Guide

Chapter 2 33
2 Understanding how PRM
manages resources
This chapter explains how PRM performs resource management. The
following topics are covered:
• How PRM controls resources
• How PRM manages CPU resources
• How PRM manages real memory resources
• How resource allocations interact
• How PRM manages disk bandwidth resources
• How PRM manages applications
NOTE If PRM is unable to start or run properly due to CPU or memory
resources not being available, it cannot manage your system’s resources.
How PRM controls resources
PRM places limits on resource use based on values specified in a
configuration file. These values always indicate a minimum amount and
in some cases can indicate a maximum amount of a resource.
NOTE Do not use PRM with gang scheduling, which is the concurrent
scheduling of multiple threads from a single process as a group (gang).