Thomas.Rodriguez at Sun.COM
Mon Nov 26 14:18:47 PST 2007
Also the ProfileInterpreter option does nothing with the C++ interpreter
so any benchmarks which benefit from type profiling will run more slowly
with the C++ interpreter.
steve goldman wrote:
> Volker Simonis wrote:
>> If you are interested in a performance comparison between the C++ and
>> the Template Interpreter you may want to read the following blog:
>> "Template- vs. C++-Interpreter shootout: This blog discusses the main
>> differences between the C++ and the Template Interpreter which are
>> both available within the Hotspot sources of the OpenJDK project. Some
>> performance tests with the DaCapo benchmark suite which compare the
>> two interpreters in mixed and interpreted mode on Linux/x86 and
>> Solaris/SPARC conclude the presentation."
> Very cool. So the results are much different (worse) for Xmixed than I
> got in the long distant past. Server has certainly changed a lot in the
> interim. So what compiler did you use on Solaris? Considering how
> similar the numbers are between x86/sparc for -Xint it would seem that
> you might have used gcc. I used to see worse behavior on sparc because
> with gcc the interpreter could do the computed goto trick for the
> dispatch loop and that is worth a lot.
> Second if you have the time it would interesting to see the comparison
> using client.
More information about the hotspot-dev