What to do when eclipse starts to freeze on osx:

“…Two things I can think of — remove the
shared class archive (found in
/System/Library/Frameworks/JavaVM.framework/Versions//Libraries/classes.jsa)
so it will be forced to regenerate….
you can get a java stack trace by typing ‘kill
-QUIT ’ on the stuck process. Another helpful thing is to attach to it
with gdb and type ‘t a a bt’ to get all native backtraces. That assumes you can
launch Terminal or ssh into the machine to do those things.

From Stfan Sinclair 2006-05-27 20:57:01 -0400 https://bugs.eclipse.org/bugs/show_bug.cgi?id=141474