Difference between MATLAB tic-toc time and actual time measured with a stop watch

Hello, this may seem stupid but I tried to check the time measured by tic-toc and the actual time measured with the help of stop watch for a certain program. I was surprised that tic-toc displayed about 4 minutes and my real world stop watch showed about 11 minutes. Can someone explain this mystery to me?

[Stephen23]

@Mohsin Shah: how many time does the code call tic ? E.g. do you cal tic in a loop, or in any local/sub functions? Try doing a search and seeing where it is called from.

[Mohsin Shah]

@Stephen Cobeldick: tic is at the very top of the code and toc is at the end of the code. They are not inside a function and are not in the middle of the script.

[H ZETT M]

has there been any delay in the output ? It seems weird that matlab is off by such a large amount

[Mohsin Shah]

May be I can note the time for every function and script and then take the sum. In this way, I can figure it out I guess.

Answer 1

[Rob Campbell]

You could also try "profview" if you want to see what's taking the time in your function. You'll get loads of detailed information and even hints on how to speed stuff up.