Performance improvements

.gitignore

@@ -26,4 +26,5 @@ poison-*.tar
 /tmp
 
 .elixir_ls
+*.benchee
 /bench/output/

bench/run.exs

@@ -8,14 +8,15 @@ defmodule Bench do
       time: 10,
       memory_time: 1,
       pre_check: true,
+      load: Path.join(__DIR__, "decode.benchee"),
+      save: [path: Path.join(__DIR__, "decode.benchee")],
       inputs:
         for name <- decode_inputs(), into: %{} do
           name
           |> read_data()
           |> (&{name, &1}).()
         end,
       before_each: fn input -> :binary.copy(input) end,
-      after_scenario: fn _input -> gc() end,
       formatters: [
         {Console, extended_statistics: true},
         {HTML, extended_statistics: true, file: Path.expand("output/decode.html", __DIR__)}
@@ -30,30 +31,22 @@ defmodule Bench do
       time: 10,
       memory_time: 1,
       pre_check: true,
+      load: Path.join(__DIR__, "encode.benchee"),
+      save: [path: Path.join(__DIR__, "encode.benchee")],
       inputs:
         for name <- encode_inputs(), into: %{} do
           name
           |> read_data()
           |> Poison.decode!()
           |> (&{name, &1}).()
         end,
-      after_scenario: fn _input -> gc() end,
       formatters: [
         {Console, extended_statistics: true},
         {HTML, extended_statistics: true, file: Path.expand("output/encode.html", __DIR__)}
       ]
     )
   end
 
-  defp gc do
-    request_id = System.monotonic_time()
-    :erlang.garbage_collect(self(), async: request_id)
-
-    receive do
-      {:garbage_collect, ^request_id, _dead} -> :ok
-    end
-  end
-
   defp read_data(name) do
     name
     |> String.downcase()