I've just committed some changes tonight that improved performance
on the GC-heavy tests in examples/benchmarks/ by about 8%.
Results on each of the GC benchmark tests are, scaled against 1.0 as the
old version, are:
old new
gc_alloc_new.pbc 1.000 0.969
gc_alloc_reuse.pbc 1.000 0.957
gc_generations.pbc 1.000 0.899
gc_header_new.pbc 1.000 0.991
gc_header_reuse.pbc 1.000 0.871
gc_waves_headers.pbc 1.000 0.867
gc_waves_sizeable_data.pbc 1.000 0.987
gc_waves_sizeable_headers.pbc 1.000 0.855
Overall:
old 1.000
new 0.925
Details of what were done to accomplish this can be found in my email to
the cvs-parrot list. It was pretty much 4 or 5 distinct things that each
gave a couple percentage points' improvement.
Thanks,
Mike Lambert
