How to check which function is the slowest one?

I'm trying to figure out which function in my program (designed to solve non-linear equations) is the 'bottle-neck' of the calculation. Any useful suggestions?

Answer 1

[Stephen23]

This is covered extremely well in the documentation:

http://www.mathworks.com/help/matlab/matlab_prog/profiling-for-improving-performance.html

http://www.mathworks.com/help/matlab/matlab_prog/measure-performance-of-your-program.html

http://www.mathworks.com/help/matlab/matlab_prog/techniques-for-improving-performance.html

In a nutshell: use the profile function. And read those links!

Answer 2

[John D'Errico]

Use the profile tool to identify bottlenecks.

help profile

Answer 3

[Shameer Parmar]

Simply put..

'tic' and 'toc' commands in each function one by one and check the time..

 % starting of function
    tic
    % your code
    % your code
    % your code
    toc
 % end of this function