Program analysis

Profilers are tools that analyze the dynamic behavior of your program: how fast and how often the parts of its code are executed. ``Analyzing run-time behavior'' discusses the lprof, prof and fprof profilers. Profilers are tools that analyze the dynamic It includes an overview of the profiling utilities that describes the procedure you must follow to profile a program with any of the following tools:

• prof -- A time profiler that reports the amount of time and the percentage of time that was spent executing the parts of a program. It also reports the number of calls to each function and the average execution time of the calls.

• lprof -- A line-by-line frequency profiler. It reports how many times each line of source code was executed. In that way, it lets you identify the unexecuted and most frequently executed parts of your code.

• fprof -- A flow and time profiler. It reports when each function was called, and when the function exited. This information can be used for performance tuning or locality of reference tuning.

``Browsing through your code with cscope'' contains a tutorial on the cscope browser. The cscope browser is an interactive program that locates specified elements of code in C, lex, or yacc source files. It lets you search and edit your source files more efficiently than you could with a typical editor.