In general, profiling a software system involves analyzing the behavior and performance usage of resources that are involved, as the system executes. This analysis is most often performed to find points of optimization and for the removal of bottlenecks in the system. Profiling is also commonly, but not necessarily, performed under various levels of load on the system.

Profiling is a very powerful function for investigating and helping resolve suspected bottlenecks. Profiling can also be very complex, and the wrong interpretations may lead to disastrous results. It should, therefore, only be performed in stable environments, preferably, by staff that has shown an aptitude for it.