Add performance check script

Rakefile

@@ -2,4 +2,9 @@ require "bundler/gem_tasks"
 require "rspec/core/rake_task"
 
 RSpec::Core::RakeTask.new(:spec)
-task default: :spec
+task default: [:spec, :performance_test]
+
+desc 'Check performance'
+task :performance_test do
+  ruby 'scripts/command_performance.rb'
+end

expeditor.gemspec

@@ -24,6 +24,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency "concurrent-ruby", ">= 1.0.0"
   spec.add_runtime_dependency "retryable", "> 1.0"
 
+  spec.add_development_dependency "benchmark-ips"
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "concurrent-ruby-ext", ">= 1.0.0"
   spec.add_development_dependency "rake"

scripts/command_performance.rb

@@ -0,0 +1,25 @@
+$LOAD_PATH.unshift(File.expand_path('../lib', __dir__))
+require 'expeditor'
+
+require 'benchmark/ips'
+
+Benchmark.ips do |x|
+  x.report("simple command") do |i|
+    executor = Concurrent::ThreadPoolExecutor.new(min_threads: 100, max_threads: 100, max_queue: 100)
+    service = Expeditor::Service.new(period: 10, non_break_count: 0, threshold: 0.5, sleep: 1, executor: executor)
+
+    i.times do
+      commands = 10000.times.map do
+        Expeditor::Command.new { 1 }.start
+      end
+      command = Expeditor::Command.new(service: service, dependencies: commands) do |*vs|
+        vs.inject(0, &:+)
+      end.start
+      command.get
+
+      service.reset_status!
+    end
+  end
+
+  x.compare!
+end