With IronPython 1.1 released, I ran pybench for CPython and IronPython on my machine, and published the result here: http://sparcs.kaist.ac.kr/~tinuviel/pybench/ py24, py25, ipy11 are raw pybench result files. ipy11-vs-py24 and ipy11-vs-py25 are comparing reports generated by pybench. -- Seo Sanghyeon