Speedup calculations and graph display were added in May 2013.
The speedup was presented as the ratio of the execution time on a uniprocessor over that on a multiprocessor, when executing the same parallel Time Warp algorithm.
For a set of 54 non-trivial test programs (at over 15,000 lines in total (sloccount)), measurements show a typical speedup of 2-20 times over Psyco, and 2-200 times over CPython.
Speculative multithreading, a dynamic parallelization technique that depends on out-of-order execution to achieve speedup on multiprocessor CPUs.