Results of running https://github.com/mtortonesi/fastrandom

results.txt

I added `x.compare!` in bin/benchmark

$ cd ext
$ rake
$ cd ..

$ gem install ffi-compiler benchmark-ips
$ ruby -Ilib bin/benchmark

ruby 2.6.6p146 (2020-03-31 revision 67876) [x86_64-linux]
Warming up --------------------------------------
          fastrandom   650.342k i/100ms
              random     2.097M i/100ms
Calculating -------------------------------------
          fastrandom      6.457M (± 0.3%) i/s -     32.517M in   5.036296s
              random     21.182M (± 2.4%) i/s -    106.960M in   5.052525s

Comparison:
              random: 21181651.6 i/s
          fastrandom:  6456620.6 i/s - 3.28x  (± 0.00) slower


jruby 9.2.11.1 (2.5.7) 2020-03-25 b1f55b1a40 OpenJDK 64-Bit Server VM 25.242-b08 on 1.8.0_242-b08 +jit [linux-x86_64]
Warming up --------------------------------------
          fastrandom   360.894k i/100ms
              random   595.531k i/100ms
Calculating -------------------------------------
          fastrandom      8.899M (±22.9%) i/s -     40.420M in   5.020191s
              random     19.104M (±27.3%) i/s -     78.610M in   5.000620s

Comparison:
              random: 19104461.1 i/s
          fastrandom:  8898941.6 i/s - 2.15x  (± 0.00) slower


truffleruby 20.2.0-dev-725fea94, like ruby 2.6.6, GraalVM CE JVM [x86_64-linux]
Warming up --------------------------------------
          fastrandom   823.982k i/100ms
              random     4.904M i/100ms
Calculating -------------------------------------
          fastrandom      8.226M (± 1.4%) i/s -     41.199M in   5.009269s
              random     49.811M (± 0.8%) i/s -    250.124M in   5.021797s

Comparison:
              random: 49810558.8 i/s
          fastrandom:  8226275.9 i/s - 6.06x  (± 0.00) slower