HP Process Resource Manager User's Guide

Overview
Why use HP Process Resource Manager?
Chapter 1 27
Standard HP-UX resource allocation
Under standard HP-UX resource allocation, all processes are treated
equally. Figure 1-1 illustrates how a user, by starting multiple processes,
can consume a majority of an available resource because the processes
each get equal amounts. As illustrated, User1 starts two processes and
User2 starts one process. Using HP-UX standard resource allocation,
User1 could control two-thirds of the available resource while User2 gets
one-third, regardless of the importance of each process.
Figure 1-1 HP-UX standard resource allocation
How PRM can improve on standard allocation
Unlike the standard scheduler, PRM allows you to set priorities on your
processes. The following sections illustrate various ways you can use
PRM to improve scheduling.
If multiple users or applications within a PRM group are competing for
resources, standard HP-UX resource management practices determine
resource allocation.
User1
33.3%
33.3% 33.3%
User2
Process1
Process2
Process3
HP-UX server