Help with diagnosing eclipse freezes

[Micah]

Micah wrote:
> Hey List,
> 
> I asked a similar question back in November.  See 
> http://lists.freebsd.org/mailman/htdig/freebsd-eclipse/2005-November/000210.html 
> 
> 
> A quick rehash: Starting eclipse via the command line "eclipse" takes 
> ~3.5 minutes to start.  Creating a new java project and a new class and 
> then moving the cursor resulted in a 1 minute freeze.  After it unfroze 
> typing "System." caused the IDE to freeze for another minute.  The times 
> seem to be fairly consistent.
> 
> This is on an Athlon 64 3000+ system with 1.5GB ram running 
> FreeBSD-release 6.0 i386 with the generic kernel.  I'm currently trying 
> to run eclipse-3.1.1_2, but it happened on 3.1.1 and 3.1_3 as well.  A 
> top indicates that "java" is taking up all available processor time.  No 
> disk activity is indicated in systat or by the drive LED on the case. 
> Poseidon, the other largish java application I use frequently, does not 
> exhibit these freezes.
> 
> Since November I've upgraded to FreeBSD 6.0 release, tried compiling 
> eclipse with JDK15, tried compiling with JDK14, and tried the packaged 
> version from 
> ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-6-stable/All/eclipse-3.1.1_2.tbz. 
> 
> 
> JDK15 fails to start crashing with a java hotspot zlib error.
> JDK14 and packaged both exhibit the same freezes.
> 
> I'm not sure how to begin diagnosing this.  Help with the debugger, 
> eclipse debugging flags, or tools to watch the system during the freezes 
> would be most appreciated.
> 
> Thanks,
> Micah

I just tried building Eclipse with java 1.5 and the patch Michael 
Kastner mentioned earlier this week.  /same/ problem.  Since only 
Eclipse does this and it's been there across multiple versions of 
FreeBSD and JVMs, then it's either Eclipse or a really strange hardware 
problem that only affects Eclipse and not the hundreds of other ports I 
have installed.  Could someone point me somewhere that has some reading 
on profiling or attaching a debugger to trap these freezes?

Thanks,
Micah