On Tue, Nov 06, 2007 at 03:15:52AM +0900, Lloyd Hilaiel wrote: > Most of the time on this thing has been figuring out how quantify the > change, rather than making it. It seems like having a robust, built > in "ruby performance suite" could perhaps encourage future > exploration. I agree. Ruby 1.9 does have some performance tests in the benchmark/ subdirectory, including a runner to compare performance to the already-installed version of the interpreter. It's really only designed to eyeball speed improvement and isn't the robust performance suite that you're proposing, but it might be a good starting point. Paul