HP Process Resource Manager User's Guide

Understanding how PRM manages resources
How PRM manages real memory resources
Chapter 2 57
Figure 2-4 Locked memory distribution
Example: memory management
This example shows how the PRM memory manager prm2d manages the
competing memory demands of three PRM groups as system memory
utilization approaches 100%.
Figure 2-5 Memory management
GroupB
GroupA
GroupC
200 Mbytes of available memory
(includes lockable memory)
170 Mbytes of
lockable memory
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
A
BC
Time
Memory use
Group1: 30%
Group2: 10%, 30%
Group1
Group2
Group3: 60%
D
Group3
Memory use approaches 100%