Measure performance of 2 programmes

Hello,

I have 2 codes codeOld and codeNew, each contains many methods (i.e. both very complex). I'd like to prove that codeNew is better than codeOld as the former is faster. So I googled it and found the following functions to measure the performance: timeit, tic toc, cputime.

I used tic toc before but people say I should use timeit. But I read in many papers, they measure the performance of a code using cputime. This is confusing me because in this help page: https://uk.mathworks.com/help/matlab/matlab_prog/measure-performance-of-your-program.html They say cputime can be misleading.

So which one should I use if I want to measure the performance and speed of my code?

Many thanks!

Answer 1

[Stephan]

Hi,

i suggest to use this:

https://de.mathworks.com/help/matlab/matlab_prog/profiling-for-improving-performance.html

https://de.mathworks.com/help/matlab/ref/profile.html

This is good for comparison and also for finding bottlenecks and possobilities for improvement.

Best regards

Stephan