Benchmarking performances between :preload, :eager_load, :includes

ruby_benchmark_usage.rb

require 'benchmark/ips'

def test
  Benchmark.ips do |bm|
    bm.report('#preload   ') do
      Speaker.preload(:talks).to_a
    end

    bm.report('#eager_load') do
      Speaker.eager_load(:talks).to_a
    end

    bm.report('#includes  ') do
      Speaker.includes(:talks).to_a
    end

    bm.compare!
  end
end