Speed of synchronized

[Daniel Kozak via Digitalmars-d-learn]

Dne 16.10.2016 v 10:41 Christian Köstlin via Digitalmars-d-learn napsal(a):

> My question now is, why is each mutex based thread safe variant so slow
> compared to a similar java program? The only hint could be something
> like:
> https://blogs.oracle.com/dave/entry/java_util_concurrent_reentrantlock_vs  that
> mentions, that there is some magic going on underneath.
> For the atomic and the non thread safe variant, the d solution seems to
> be twice as fast as my java program, for the locked variant, the java
> program seems to be 40 times faster?
>
> btw. I run the code with dub run --build=release
>
> Thanks in advance,
> Christian
Can you post your timings (both D and Java)?  And can you post your java 
code?