Profiling in software
http://en.wikipedia.org/wiki/Software_profiling
In software engineering, performance analysis, more commonly known today as profiling, is the investigation of a program’s behavior using information gathered as the program executes (i.e. it is a form of dynamic program analysis, as opposed to static code analysis). The usual goal of performance analysis is to determine which sections of a program to optimize — usually either to increase its speed or decrease its memory requirement (or sometimes both).
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