Why is there a time difference in tic toc in multiple runs

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In the following code, the execution time returned by tic toc varies in each run. Why?
tic ones(50) toc

Answers (1)

Rick Rosson
Rick Rosson on 2 Feb 2016
Because tic toc measures elapsed time rather than cpu time. Try using profile instead.
  3 Comments
Walter Roberson
Walter Roberson on 2 Feb 2016
What if your computer has to get busy popping up Clippy to remind you that you have not saved a document?

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