Your choice of performance-related compiler options and your use of the USE FOR DEBUGGING ON ALL PROCEDURES statement can affect how well your program is optimized.
You might have a customized system that requires certain options for optimum performance. Do these steps:
Another compiler feature to consider is the USE FOR DEBUGGING ON ALL PROCEDURES statement. It can greatly affect the compiler optimizer. The ON ALL PROCEDURES option generates extra code at each transfer to a procedure name. Although very useful for debugging, it can make the program significantly larger and inhibit optimization substantially.
Although COBOL allows segmentation language, you will not improve storage allocation by using it, because COBOL does not perform overlay.
related concepts
Optimization
related tasks
Optimizing your code
Getting listings
related references
Performance-related compiler options