Customize the Knowledge Base › The Knowledge Base

The Knowledge Base

The Performance Manager makes assertions and inferences about system performance based on a large and changing body of technical information called a knowledge base. This information is in the form of performance rules. Performance rules come from one or two sources. The first source of rules is the product itself. The factory rules are automatically loaded by the user interfaces that require them. The second source is an auxiliary rules file, which you create.

While the Performance Manager is designed to work without any modifications, an experienced system manager can further benefit from the tool by customizing the knowledge base. Good reasons to customize the knowledge base include the following rules:

• Eliminating the firing of rules for conditions that are customary and unchangeable for your system
• Refining rules to filter testing of specific images or other conditions that are a required and unchangeable part of your workload
• Modifying the characteristics of certain (older) disk devices that you might own and still use (for example, RF31)
• Adding rules to check for additional warning conditions that are specific for your own workloads and systems