John,
Thanks for sending the results of the Volano benchmark to the list. It
was interesting to see the performance comparisons. However, I was
disappointed to see that SMP hardware was not used in the test. Is
there a chance that we will see published numbers that show results on
SMP hardware? It would definitely be interesting to those that are
interested in seeing how native thread Java scales in comparison to
those JVMs that do not use kernel (system mode) thread libraries for
their thread implementations. It would also suggest the suitability of
various platforms (Linux vs Windows vs Solaris) for implementation of a
fast scalable JVM.
--
Matthew Peterson
Sr. Software Engineer
Caldera Systems, Inc
[EMAIL PROTECTED]
John Neffenger wrote:
>
> I posted our latest test results yesterday:
>
> The Volano Report
> http://www.volano.com/report.html
>
> Thank you, Blackdown, for keeping green threads alive and working
> extraordinarily well on Linux! Sun abandoned their "sunwjit" back in
> 1999:
>
> java.lang.StackOverflowError with sunwjit
> http://developer.java.sun.com/developer/bugParade/bugs/4299454.html
> "The sunwjit has been obsolete for long time. We are not going
> to fix the problem."
>
> and now they've abandoned the Classic VM:
>
> Classic VM goes into hard run at 1018 socket connections
> http://developer.java.sun.com/developer/bugParade/bugs/4427986.html
> "As to classic VM hang, it's a known problem. Since we are near
> ladybird FCS and merlin does not include classic VM. This bug will
> not be fixed."
>
> Blackdown's Java VM using green threads on Linux is the only hope for
> pure Java servers with lots of connections -- at least while we're
> waiting for the Java 1.4 "new I/O" (or a different Linux threading
> model).
>
> By the way, I tested several just-in-time compilers with Blackdown on
> Linux, and I'm very impressed with OpenJIT:
>
> OpenJIT: A Reflective JIT Compiler for Java
> http://www.openjit.org/
>
> I tried OpenJIT, javacomp (Borland), shuJIT, sunwjit (Sun), and tya.
> OpenJIT was the fastest in my VolanoMark tests and seemed to be the most
> stable.
>
> Thanks,
> John Neffenger
>
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