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Thursday, April 19, 2007

Judy for Ruby 1.8.6

Pink Curls by creativity+ from flickr (CC-NC-ND)I ported Judy patch to Ruby 1.8.6. Speedups are comparable to ones in 1.8.5. On benchmarks from YARV (score is mean of 3 middle times from 5 runs):

BenchmarkSpeedup
app_answer1.9%
app_fib1.3%
app_mandelbrot4.2%
app_raise7.1%
app_strconcat0.3%
app_tak0.8%
app_tarai2.7%

Mandelbrot benchmark is obviously significantly improved, as Judy improves instance variable getting/setting a lot, and it uses complex numbers, which are Ruby objects. I'm not really sure why raise is affected so much, but it was consistent accross 5 benchmark runs.

In any case, you can get the patch here.

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