Why does the Matlab Profiler say there is a bottleneck on the 'end' statement of a 'for' loop?

Question

So, I\'ve recently started using Matlab\'s built-in profiler on a regular basis, and I\'ve noticed that while its usually great at showing which lines are taking up the most

Answer 1

When I've seen this in my code, it's been the deallocation of large temporaries created in the loop. Each new variable created in the loop is deallocated at the end.