Part of TSO/E customization should include setting performance objectives for TSO/E. When you set performance objectives, ask yourself the following kinds of questions:

• What kind of user response do I want TSO/E to provide?
• Which commands do I want to provide the best response?
• Do some users require better response time than others?
• What performance impact will TSO/E have on the rest of my system?

There are a number of factors to consider and trade-offs to make when you define performance objectives. Also, you should keep in mind that a change you make to improve TSO/E performance will probably have an opposite affect in some other part of your system. For more information about setting performance objectives, see Defining performance objectives for TSO/E.