bm-grape-controller-swagger.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile do
  gem "grape", "2.2.0"
  gem "grape-swagger", "2.1.2"
  gem "benchmark-ips"
end

require "grape"
require "grape-swagger"
require "benchmark/ips"

Entity = Class.new

Benchmark.ips do |bm|
  bm.report("options description") do
    Module.new do
      Class.new(Grape::API) do
        format :json

        namespace :foo do
          desc 'Description', detail: "something here", success: Entity
          get :description do
          end
        end

        add_swagger_documentation
      end
    end
  end

  bm.report("block description") do
    Module.new do
      Class.new(Grape::API) do
        format :json

        namespace :foo do
          desc 'Description'do
            detail "something here"
            success Entity
          end
          get :description do
          end
        end

        add_swagger_documentation
      end
    end
  end
end

result.txt

ruby 3.4.6 (2025-09-16 revision dbd83256b1) +YJIT +PRISM [arm64-darwin24.6.0]
Warming up --------------------------------------
 options description   214.000 i/100ms
   block description   153.000 i/100ms
Calculating -------------------------------------
 options description      1.025k (±15.1%) i/s  (975.54 μs/i) -      5.136k in   5.123947s
   block description    701.153 (± 9.7%) i/s    (1.43 ms/i) -      3.519k in   5.069357s