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copied!<p>May I suggest my own open source profiler raven::set::cRunWatch? It is designed for exactly this problem and works on Windows using Visual Studio 2008 Standard Edition, so you do not need to pay for the version that has the profiler included.</p> <p>I have taken your code, rearranged it slightly so it compiles without forward declarations and added the necessary calls to cRunWatch</p> <pre><code>// RunWatchDemo.cpp : Defines the entry point for the console application. // #include "stdafx.h" void highly_optimised_subroutine() { raven::set::cRunWatch runwatch("highly_optimised_subroutine"); Sleep( 2 ); } void badly_written_function() { raven::set::cRunWatch runwatch("badly_written_function"); for (int k = 1; k < 1000; k++ ) { highly_optimised_subroutine(); } } void well_written_function() { raven::set::cRunWatch runwatch("well_written_function"); for (int k = 1; k < 10; k++ ) { highly_optimised_subroutine(); } } int _tmain(int argc, _TCHAR* argv[]) { raven::set::cRunWatch::Start(); well_written_function(); badly_written_function(); raven::set::cRunWatch::Report(); return 0; } </code></pre> <p>When run this produces the output</p> <pre><code>raven::set::cRunWatch code timing profile Scope Calls Mean (secs) Total highly_optimised_subroutine 1008 0.002921 2.944146 badly_written_function 1 2.926662 2.926662 well_written_function 1 0.026239 0.026239 </code></pre> <p>This shows badly_written_function to be the very close second time user, and therefore the culprit.</p> <p>You can obtain cRunWatch from <a href="http://66.199.140.183/cgi-bin/ravenset.cgi/index" rel="nofollow noreferrer">here</a> You will recognize the sample code in the User Guide :-)</p>

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