294 WebSphere Application Server V8.5 Concepts, Planning, and Design Guide
It takes much more effort and money to correct issues after they occur in production than to
fix them up front. If performance testing is part of your development cycle, you can correct
issues with your application design much earlier. Performance testing results in fewer issues
when using your application in the production environment.
10.3.3 Establishing requirements
You must define the success criteria of performance. Without a goal or target, you cannot
determine whether the performance campaign was successful. Also, avoid abstract success
criteria, such as a “We need to achieve the best that we can have” goal. Keep in mind that
performance testing can be endless ...