performance problems

[Norman Hendrich]

Hello all,

what are the experiences with the performance of gcj compiled apps?

On by Linux box at home, gcj compiled apps run about 5 times _slower_
than under IBM JDK 1.1.6 (which in turn is slower than the current
M$VM and SUN Hotspot under Windows on the same box).

What did I do wrong? I went to the adventure of building gcj/libgcj
mainly to get better performance for our MIPS simulator...


- the performance of gcc-2.95 compiled C/C++ code seems ok.

- building libgcj on my Linux box was painful. I had to copy several
  include files from the gcc source tree to places where libgcj looked
  for them. (Perhaps due to my uncommon Linux installation: a Redhat 5.2
  upgraded manually to kernel 2.2.x and glibc 2.1).
 
- gcj/libgcj on Solaris 2.5.1 builds fine. The compiled apps, however,
  crash with a SEGV during initialization, as reported by others.
  Should I send in yet another stack trace?

Any ideas?

- Norman 

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Norman Hendrich, hendrich@informatik.uni-hamburg.de