Improvements over time

  rakudo-2011.01
  + Parrot generational GC (2011.04)
  + Hotpath method optimizations (2011.05)
  + Basic profiling capabilities (2011.05)
  rakudo-2011.07
  
  
  
  
  

Results (seconds):

              2011.01  2011.07

while 0..^N    23.04    14.43   ☺
for 0..^N      34.93    26.90   ☺
startup         0.62     0.59   ☺