profiler

A Primitive Profiler

Timerecorder is a primitive profiler: a program used to examine the speed or efficiency or another program.
But I didn't even know that term until I attended a talk by Mark Jason Dominus last month, in which he discussed better profilers available on CPAN.
Its structure is taken directly from Damian Conway's Object Oriented Perl.
Not repeating code is one way of re-using code.
So is stealing ... er, borrowing it from an expert.