Why does my stand-alone created using the MATLAB Compiler take longer to start the first time?

Question

MathWorks Support Team 2009-12-2

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https://ww2.mathworks.cn/matlabcentral/answers/98613-why-does-my-stand-alone-created-using-the-matlab-compiler-take-longer-to-start-the-first-time

It takes longer to start my stand-alone application the first time it is run than consecutive runs. Also if I run the application some time later, it again takes longer the first time but becomes faster on consecutive runs. I would expect it to always start quicker after the first run.

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Answer 1

MathWorks Support Team 2016-11-2

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https://ww2.mathworks.cn/matlabcentral/answers/98613-why-does-my-stand-alone-created-using-the-matlab-compiler-take-longer-to-start-the-first-time#answer_107961

The time improvement is expected behavior and is an optimization done by the operating system. This behavior is typical of all programs. When a program starts, it needs to be loaded from a slow medium (hard disk), to a fast medium (RAM). When a program stops running, the code for the program is not removed immediately; instead it is removed when a page fault occurs:

Page fault

http://en.wikipedia.org/wiki/Page_fault