HP-UX Workload Manager User's Guide

Configuring WLM
Defining SLOs
Chapter 5 201
Is an integer less than or equal to high_util_bound,
but greater than or equal to 0. WLM attempts to keep
the utilization percentage above this threshold value,
which is 50 by default. It does so by reducing the
requested allocation whenever utilization drops below
this value.
NOTE Setting low_util_bound at or near 0 can result in an
SLO that never reduces its requested share allocation.
This results in the SLO not giving up its unused
shares.
high_util_bound
Is an integer greater than or equal to low_util_bound,
but less than or equal to 100. WLM attempts to keep
the utilization percentage under this threshold value.
It does so by increasing the requested allocation
whenever utilization surpasses this value. When not
specified, this value defaults to the specified
low_util_bound; when both are not specified, this
value defaults to 75.
NOTE Setting high_util_bound at or near 100 can result in
an SLO that never requests a larger allocation.
Figure 5-5 shows conceptually how WLM works to keep CPU utilization
within a range. The goal here is to keep utilization in the default range,
50% to 75%.