Message passing between threads: Java 4 times faster than D

[Alex_Dovhal]

"Nicolae Mihalache" <xpromache at gmail.com> wrote:
> 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

Hi, I downloaded your two programs, I didn't run them but noticed that in 
'mp.d'
you have n set to 100_000_000, while in 'ThroughputMpTest.java' n is set to
10_000_000, so with this D code is 10/4 = 2.5 times faster :)