Garbage collection in D
Sam Hu
samhudotsamhu at gmail.com
Wed Jun 3 19:51:19 PDT 2009
bearophile Wrote:
> I have tried the new JavaVM on Win, that optionally performs escape analysis, and the results are nice:
>
> Timings, N=100_000_000, Windows, seconds:
> D 1: 40.20 DMD
> D 2: 21.83 DMD
> D 2: 18.80 DMD, struct + scope
> C++: 18.06
> D 1: 8.47 DMD
> D 2: 7.41 DMD + scope
> Java: 1.84 V.1.6.0_14, -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC
> Java 1.78 -server
> Java: 1.44
> Java: 1.38 V.1.6.0_14
> Java: 0.28 V.1.6.0_14, -server -XX:+DoEscapeAnalysis
>
> Timings, N=100_000_000, Pubuntu, seconds:
> D 1: 25.7 LDC
> C++: 6.87
> D 1: 2.67 LDC + scope
> Java: 1.49
>
> Bye,
> bearophile
Sorry for my stepping in...
What does this result mean?Does it mean D is slower than Java and C++ is also slower than Java?Or that's true just under certain circumstance?
I am really confused and really appreicate if any further explanation.
Regards,
Sam
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