MATLAB: Profiler vs stopwatch timer functions

Question

Hello everyone !

I have just finished optimizing a code and I'd like to know the reason why there's a difference between the 'elapsed time' returned by the tic and toc timers (respectively put at the beginning and the end of my code) and the result printed by the profiler. For instance, why do I have 17 seconds for the 'elapsed time' and 27 seconds with the profiler ?

I also specify that nothing runs in the background of my system.

Thanks a lot !

Answer 1

profiler restricts to a single thread, and disables some optimizations.