some more on IronPython

Michael Foord has some notes on getting IronKant working with IronPython on Windows here

During my talk, I showed a slide that IronPython on .Net runs pybench at 41% of CPython 2.5's speed (71%, if you exclude the TryRaiseExcept case, where it totally loses), while Mono 1.1.17 gets around 14% of of CPython 2.5's speed. I finally got around to trying Mono 1.2.2 (I didn't have time before the talk). It's actually about 12% _slower_ than 1.1.17. This makes me sad. Very sad. I need to get pybench checked into IPCE and point the Mono and .Net folks at it.

It's pretty obvious that both .Net and Mono optimised for pystone - in both cases, IronPython is more than 20% faster than CPython. Unfortunately, pystones is a terrible benchmark. If they can optimise for pybench, most people's applications will see a real improvement.