Please could we have a generational garbage collector for libgcj? Garbage collection delays can be quite unacceptable for desktop apps on my Athlon XP 1800+.
The Boehm GC has a generational mode, but it would require some changes to libgcj which nobody has yet attempted.
Closing as won't fix as libgcj (and the java front-end) has been removed from the trunk.