Task: Estimating the Effect of Adding or Moving Processors

Introduction

It is frequently desirable to move processors among servers or add processors to balance resources, adjust headroom, deal with existing problems, or prevent anticipated ones. With HP Capacity Advisor, you can make more informed decisions about re-configuring your servers to improve the quality of service or maintain it with a more efficient configuration.

Capacity Advisor allows you to size your system with more precision. This sizing is not based on a simple peak utilization value, but on knowing the answers to questions such as whether your system is more than 70% busy for an unacceptable percentage of the time.

Two procedures are described below:

Estimating the Effect of Moving Processors

Prerequisites To estimate the effect of moving processors:

You should be familiar with Capacity Advisor operations (see “Basic Procedures”).
You must be logged in to HP Systems Insight Manager. (See “Accessing Capacity Advisor”.)
You must have already collected data on the systems of interest (see “Gathering Data for Capacity Advisor”).

Procedure 4-2 To Estimate the Effect of Moving Processors

For specific descriptions of each field on the user interface screens, click the help topic link on the software screen for each task.

Determine the Current Quality of Service
Follow the procedure in “Utilization Reports Overview” to generate a report with your preferred metric for quality of service for the systems that might be exchanging processors.
Determine the Systems that Should Exchange Processors
Make sure to consider issues such as ownership of the systems the processors are moving among and compatibility of the processors.
Create a Scenario that Includes the Systems That Will Exchange Processors
Follow the procedure in “Creating a Planning Scenario” to create a scenario including the systems you are planning to exchange processors among.
Move Processors From Donor Systems to The Receivers
Follow the procedure described in “Editing a System” to:
1. Edit the donor systems to reduce number of processors.
2. Edit the receiving systems to increase the number of processors.
Check the New Quality of Service
Follow the procedure in “Producing Graphs and Reports” to generate a report on the resource utilization of the systems in the scenario. Compare this new resource utilization with that described in the report that you generated before moving the processors.
If Necessary, Repeat Moving Processors and Checking Quality of Service
If the desired improvement in quality of service is not achieved, try moving processors among other systems in the scenario.

Estimating the Effect of Adding Processors

Prerequisites To estimate the effect of adding processors:

You should be familiar with Capacity Advisor operations (see “Basic Procedures”).
You must be logged in to HP Systems Insight Manager. (See “Accessing Capacity Advisor”.)
You must have already collected data on the systems of interest (see “Gathering Data for Capacity Advisor”).

Procedure 4-3 To Estimate the Effect of Adding Processors

For specific descriptions of each field on the user interface screens, click the help topic link on the software screen for each task.

Determine the Current Quality of Service
Follow the procedure in “Producing Graphs and Reports” to generate a report with your preferred metric for quality of service on the systems that are being considered to receive additional processors.
Determine Where to Add Processors.
When adding processors to an environment, it is frequently desirable to consider adding them to more than one system. Use this step to determine the set of systems that are most likely to benefit from adding processors.
Add Processors to Systems
Follow the procedure in “Editing a System” to add processors to one or more systems.
Check the New Quality of Service
Follow the procedure in “Producing Graphs and Reports” to generate a report on the resource utilization of the systems in the scenario. Compare this new resource utilization with that described in the report that you generated before adding the processors.
If Necessary, Repeat Adding Processors and Checking Quality of Service
If the desired improvement in quality of service is not achieved, try adding processors to other systems in the scenario.

Task: Estimating the Effect of Adding or Moving Processors

Technical documentation

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Introduction

Estimating the Effect of Moving Processors

Estimating the Effect of Adding Processors