September 2004
Beginner to intermediate
388 pages
6h 34m
English
Content preview from PROC SQL: Beyond the Basics Using SAS®
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10.2. Understanding Performance Tuning
Performance tuning is the process of improving the way a program operates. It involves taking a program and seeing what can be done to improve performance in an intelligent, controlled manner. As you might imagine, a tuned program is one that gets the most from the existing hardware and software environment.
Performance tuning involves measuring, evaluating, and modifying a program until it uses the minimum amount of computer resources to complete its execution. The biggest problem with the tuning process is that it is sometimes difficult to determine the amount of computer resources a program uses. Complicating matters further, adequate and complete information about resource utilization is often unavailable. ...
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