[Issue 5650] A RedBlackTree performance problem

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5650



--- Comment #14 from SomeDude <lovelydear at mailmetrash.com> 2012-04-27 08:40:08 PDT ---
(In reply to comment #11)
> I noticed that just after compilation, the first run is always slightly longer
> than the following ones by about 50 to 80 ms.
> 
> The other observation, - and that's crazy -, is if I uncomment the line
>    writeln(walkLength(t[]));
> I am consistently *faster* by 10 to 25 ms than when it's commented !!
> 
> My dmd measurements are done via Powershell command:
> Measure-Command{./bug.exe}

OK, forget it, it turns out using 
Measure-Command{...} was a rather poor way of measuring runtimes 
because of startup/shutdown.

Using StopWatch, I now get consistent results.

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