Performance of Java on FBSD vs. others...

[Nikos Ntarmos]

Hi all.

On Mon, Nov 13, 2006 at 02:11:06AM +0200, Nikos Ntarmos wrote:
> My guess is that this is not a system-related or a jvm-tweaking issue,
> but something that has to do with either the threading library or the
> intrinsics of hotspot on bsd...
> 
> Anyway, after a day of profiling and tweaking ad nauseum I got the
> runtime from ~4700'' down to ~270'' on freebsd. Only now win32 does it
> in ~80-85'' which is still a factor of ~3x-3.5x)...

FWIW java/linux-sun-jdk15 gives me more-or-less the same runtime figures
as if running my code on linux. Well, the -server vm dies with an
Internal Error 4E4D4554484F440E4350500525 (even if ran with
-XX:ParallelGCThreads=1, as suggested in [1]), but -client does the work
just fine (i.e. total execution time ~85-90'' with linux-sun-jdk15 on
freebsd, nearly identical figures with sun-jdk15 on linux, and ~80-85''
with sun-jdk15 on win32).

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[1] http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6337544