Managing Model Objects › Impact Analysis › Performance Considerations

Performance Considerations

The amount of overhead incurred by running component change processing interactively generally depends on:

• The size and complexity of the model.
• The type of editing to be done.

For example, a *DSNR working in a large model negatively affects the system when running component change processing interactively. On the other hand, a *PGMR making changes in a relatively isolated area of the model could effectively use interactive component change processing to quickly identify model objects affected by his changes. Both types of users can use the simulation options to gauge the effect of changes.

Experience will show the impact of running component change processing interactively; however, following are a few suggestions for estimating the likely effect. The amount of interactive overhead depends on:

• The type of the model object you are editing. Changes to low level model objects such as, conditions, fields, and files increase interactive overhead because the expansion process includes more objects.
• The significance of the object in the model. For example, an important internal function that is used by many other internal functions may cause a large number of objects to be expanded and as a result increase interactive overhead.
• The frequency with which you apply component changes. Running component change processing frequently minimizes the amount of work required each time it is run.