profiler

noun

1. A mechanical device that cuts complex, irregular shapes by tracing a pattern.
2. A person who creates a profile for something or someone, especially a psychological profile for an unknown criminal.
3. A device that analyzes something and builds up a profile.

   “a sediment profiler”

4. A software program that measures the performance of different portions of another program in order to locate bottlenecks.

   “[…] a complete and intuitive profiler that supports numerous types of profiling modes and profilable applications.”