HP Process Resource Manager User's Guide

PRM conﬁguration planning

Identifying resource use

Chapter 3 77

• Development tools group (design tool, debugger, compilers):

40 CPU shares, 55 memory shares

Suppose the business application group (order processing, inventory)

runs a critical database that requires on-demand, dedicated CPU cycles

and memory. Create a PSET PRM group and assign the appropriate

number of cores to it. Also, isolate the group’s memory resources. The

new application priority would be:

• Mail group (mail): 10 CPU shares, 5 memory shares

• User default group, word processing, and miscellaneous: 20 CPU

shares, 10 memory shares

• Business application group (order processing, inventory): Core 1 and

2; 50 isolated memory shares

• Development tools group (design tool, debugger, compilers): 40 CPU

shares, 55 memory shares

NOTE Because the business application group is a PSET PRM group using two

of the system’s cores, the FSS PRM groups get their CPU resource

percentages calculated based on a reduced number of cores.

Identifying resource use

After identifying the model you want to use to conﬁgure PRM, collect

data to understand the resources used in relation to that model. This

includes CPU, memory, and disk bandwidth resource needs for all the

PRM groups you plan to conﬁgure. You also need to know if your resource

use pattern varies over time, for example, reﬂecting business needs or

cycles. For instance, do the needs of a particular application change with

your business cycle, such as activities at the end of a month, or do they

vary during a single day, from morning to afternoon to night operations?