Expose JIT enabled as part of the system information printed before b…

…enchmarking

CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Features (User Facing)
+* System information now includes whether or not the JIT is enabled ([erlang docs](https://www.erlang.org/doc/apps/erts/beamasm)).
+
+### Features (Plugins)
+* `jit_enabled?` is exposed as part of the `suite.system` map
+
 ## 1.2.0 (2023-11-09)
 
 Long time, huh? 😉 I'm not gonna repeat all that, but I'm happy benchee is in a place where it just works and doesn't need too much support. Biggest feature here is the implementation of the `Table.Reader` protocol for a better Livebook experience.

lib/benchee/output/benchmark_printer.ex

@@ -44,6 +44,7 @@ defmodule Benchee.Output.BenchmarkPrinter do
   defp system_information(%{
          erlang: erlang_version,
          elixir: elixir_version,
+         jit_enabled?: jit_enabled?,
          os: os,
          num_cores: num_cores,
          cpu_speed: cpu_speed,
@@ -56,6 +57,7 @@ defmodule Benchee.Output.BenchmarkPrinter do
     Available memory: #{available_memory}
     Elixir #{elixir_version}
     Erlang #{erlang_version}
+    JIT enabled: #{jit_enabled?}
     """)
   end
 

test/benchee/output/benchmark_printer_test.exs

@@ -7,8 +7,9 @@ defmodule Benchee.Output.BenchmarkPrintertest do
   import Benchee.Output.BenchmarkPrinter
 
   @system_info %{
-    elixir: "1.4",
-    erlang: "19.2",
+    elixir: "1.15.7",
+    erlang: "26.1",
+    jit_enabled?: true,
     os: :macOS,
     num_cores: 4,
     cpu_speed: "Intel(R) Core(TM) i5-4260U CPU @ 1.40GHz",
@@ -37,8 +38,9 @@ defmodule Benchee.Output.BenchmarkPrintertest do
           |> configuration_information
         end)
 
-      assert output =~ "Erlang 19.2"
-      assert output =~ "Elixir 1.4"
+      assert output =~ "Erlang 26.1"
+      assert output =~ "Elixir 1.15.7"
+      assert output =~ ~r/jit.*.true/i
       assert output =~ "Intel"
       assert output =~ "Cores: 4"
       assert output =~ "macOS"