Message passing between threads: Java 4 times faster than D

[Nicolae Mihalache]

Hello,

I'm a complete newbie in D and trying to compare with Java. I
implemented  a simple test for measuring the throughput in message
passing between threads. I see that Java can pass about 4mil
messages/sec while D only achieves 1mil/sec. I thought that D should
be faster.

The messages are simply integers (which are converted to Integer in Java).

The two programs are attached. I tried compiling the D version with
both dmd and gdc and various optimization flags.

mache
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