Skip

Optimize your ruby methods using JIT compilation

  
    require "rubygems"
    require "skip"
    
    func = lambda do |i,j|
      r = 0
      while i < j
        i += 2
        j += 1
        r += 1 if j % 2 == 0
      end
      r
    end
    
    opti = Skip::optimized &func

    n = 100
    Benchmark.bm do |x|
      GC.start
      r = x.report{ n.times{ func[2,99999] } }
      GC.start
      jit = x.report{ n.times{ opti[2,99999] } }
      puts "#{(r.real / jit.real).round} times faster"
    end
    
         user     system      total        real
    32.030000   0.020000  32.050000 ( 32.049772)
     0.440000   0.000000   0.440000 (  0.439581)
    73 times faster
  

or

  
    require "rubygems"
    require "skip"
    
    class A
      def fib n
        return a if a <= 1
        fib(n-1) + fib(n-2)
      end
    end

    n = 100
    v = 19
    a = A.new
    
    Benchmark.bm do |x|
      GC.start
      r = x.report{ n.times{ a.fib v } }
      Skip::optimize A, :fib, 1
      GC.start
      jit = x.report{ n.times{ a.fib v } }
      puts "#{(r.real / jit.real).round} times faster"
    end
    
        user     system      total        real
    4.340000   0.880000   5.220000 (  5.216383)
    0.030000   0.000000   0.030000 (  0.027656)
    189 times faster