How can I get a better accuracy/precision in the timing obtained from TIC/TOC in MATLAB 7.0.1(R14SP1)?

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MathWorks Support Team 2009-6-27

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https://ww2.mathworks.cn/matlabcentral/answers/100425-how-can-i-get-a-better-accuracy-precision-in-the-timing-obtained-from-tic-toc-in-matlab-7-0-1-r14sp1

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I would like the time obtained from TIC/TOC on Windows and Linux platforms to have better precision.

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Answer 1

MathWorks Support Team 2009-6-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/100425-how-can-i-get-a-better-accuracy-precision-in-the-timing-obtained-from-tic-toc-in-matlab-7-0-1-r14sp1#answer_109773

The accuracy in the output of TIC/TOC has been improved for MATLAB 7.0.1(R14SP1) and later versions for the Windows and Linux(glnx86) platforms. The builtin functions TIC and TOC have been rewritten to improve the performance and accuracy on all platforms.

MATLAB 7.0.1(R14SP1) and later versions, now use the CPU cycle counter on Windows and Linux to evaluate the timing results. For example, on a 2.8 GHz, Windows XP (Service Pack 2) machine, TIC/TOC returns an accuracy of 1.117460e-006 sec, in MATLAB 7.0.4 (R14SP2).