Add memory profiler

Gemfile

@@ -11,6 +11,7 @@ gem "dry-core", github: "dry-rb/dry-core", branch: "main"
 group :benchmarks do
   gem "benchmark-ips"
   gem "benchmark-memory"
+  gem "memory_profiler"
 
   gem "hanami-utils"
 end

benchmarks/memory_profile.rb

@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+require "dry/configurable"
+require "memory_profiler"
+
+RETAIN = [] # rubocop:disable Style/MutableConstant
+
+def inherit_only(times)
+  klass = Class.new do
+    extend Dry::Configurable
+
+    setting :name
+    setting :array_setting, default: %w[jane alice jen]
+    setting :hash_setting, default: {"abcd" => "efgh"}
+  end
+
+  times.times do
+    subclass = Class.new(klass)
+    RETAIN << subclass
+  end
+end
+
+def inherit_and_configure(times)
+  klass = Class.new do
+    extend Dry::Configurable
+
+    setting :name
+    setting :array_setting, default: %w[jane alice jen]
+    setting :hash_setting, default: {"abcd" => "efgh"}
+  end
+
+  times.times do |i|
+    subclass = Class.new(klass) do
+      configure do |config|
+        config.name = "class #{i}"
+      end
+    end
+
+    RETAIN << subclass
+  end
+end
+
+times = Integer(ENV.fetch("TIMES", 1))
+profile = ENV.fetch("PROFILE", "inherit_and_configure")
+
+report = MemoryProfiler.report do
+  send(profile, times)
+end
+
+report.pretty_print