The Profiler
DrScheme includes a procedure-level execution profiler. The profiler gathers information during a program run, which it displays graphically. The profiler can order output according to the number of calls or the time spent in execution. To invoke the profiler:
-
Tell DrScheme to generate profiling information. To do this, choose to Show Details in the Language | Choose Language ... menu, and select profiling in the Dynamic Properties panel. (You do not need to follow this step unless you change the language configuration.)
-
Execute the program.
-
Select the Show | Show Profile menu entry.
A profile includes both a table and a color coding of the program text: hotter colors indicate greater use, colder colors indicate less use. To change the colors, use the Profiling tab in Edit | Preferences ....
The two images below are from the same run of the same program, which generates a list of primes. The first image shows the result of choosing time profiling (the default):
|
The second image shows the result of profiling by call counts instead:
|