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Ashutosh Tiwary

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Although many of the symptoms of performance problems (e.g., poor response time) are similar throughout the application life cycle, the underlying causes and the techniques used to diagnose them become more complex in later stages as the load increases and the configuration becomes more complex. In this article, we discuss the tools and techniques that are useful in diagnosing tough performance problems that occur under realistic high loads. We also illustrate why tools used in development or under limited load conditions are not suitable for finding such tough performance problems. Reproducing Performance Problems Under Load There are two principal kinds of performance problems: persistent problems that affect the performance at all times, and transient problems that occur intermittently and for a limited amount of time. The former are typically easy to reproduce as t... (more)