CPU: Intel(R) Core(TM) i5 CPU M 540  @ 2.53GHz

$ make benchmark 
python2 benchmarks/benchmark.py stamp/build_py2
Generating data (1000000 words)         : 24.886 s
Add words                               : 4.627 s
Building automaton                      : 33.362 s
Look up                                 : 5.946 s
Search                                  : 1.762 s
