Monitoring Application Performance
Even if a program runs correctly, speed may be a factor in its success. Users do not like to wait on computers any longer than necessary. The process of performance tuning is modifying your program to make it faster. Some examples of performance tuning are changing database queries so they execute faster, eliminating unnecessary procedure calls, or caching data. Performance tuning can be especially important in a multi-tier Internet application, because each Web page request may create a Visual Basic object, which in turn can create other objects or update a database. In a complex architecture such as this one, there are several components to each user request (network data transfer, Visual Basic code execution, ...
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