JSON parse tight loop

json_parse.rb

require 'json'
require 'benchmark'

RACTORS = ARGV.first == "ractor"
J = { rand => rand }.to_json
Ractor.make_shareable(J)
iterations = 1_000_000

Benchmark.bmbm do |x|
  x.report("json parse#{RACTORS ? ' (ractors)' : ''}") {
  if RACTORS
    rs = []
    10.times.each do
      rs << Ractor.new(iterations) do |iters|
        i = 0
        iters = iters / 10
        while i < iters
          JSON.parse(J)
          i+=1
        end
      end
    end
    rs.each(&:take)
  else
    i = 0
    while i < iterations
      JSON.parse(J)
      i+=1
    end
  end
  }
end