speeddifference command window/editor?

When timing my algorithm, I see a very big difference when using the editor and running the algorithm or by copy pasting the code into the command window. Does anyone knows where does that difference come from?

Answer 1

[Jan]

Code stored in a function is accelerated by the JIT, the Just-In-Time compiler. Therefore speed measurements should be performed with functions.

But when you add a "clear all" or clear the function specifically, reloading the M-file needs a lot of time.

A more detailed explanation is possible, if you post the corresponding code and your timings.