HP-UX Workload Manager User's Guide

How WLM manages workloads
How WLM works
Chapter 3114
For more information on the components shown in the figure, see the
following sections:
• Types of SLOs
“Shares-based SLOs vs goal-based SLOs” on page 118
• Metric data collectors
“Supplying data to WLM” on page 482
• WLM daemon
“wlmd” on page 374
• WLM configuration file
Chapter 5, “Configuring WLM,” on page 135
• WLM global arbiter
Chapter 7, “Managing SLOs across partitions,” on page 255
•PRM
Appendix F, “Understanding how PRM manages resources,” on
page 447
•EMS
Chapter 10, “Monitoring SLO compliance and WLM,” on page 343
Figure 3-1 provides an overview of WLM functional flow. It shows WLM
running in each partition on the system. If you are using WLM on a
system without partitions, focus on Par 0 to understand how WLM
controls resources on your system to ensure SLOs are met. If you want to
understand how WLM manages resources across partitions, consider Par
0 as one of four partitions along with Par 1, Par 2, and Par 3; the WLM
global arbiter (defined in the partition for Par 0) determines resource
allocations for each of the four partitions. Detailed descriptions of the
functional processes illustrated in Figure 3-1 are provided after the
figure.