ruby · soutaro · Sep 1, 2025 · Sep 1, 2025 · Sep 1, 2025 · Sep 1, 2025
diff --git a/Gemfile-39 b/Gemfile-39
@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+gem 'rbs', "~> 3.9"
+gem "benchmark-ips"
+gem "csv"
diff --git a/Gemfile-39.lock b/Gemfile-39.lock
@@ -0,0 +1,20 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    benchmark-ips (2.14.0)
+    csv (3.3.5)
+    logger (1.7.0)
+    rbs (3.9.4)
+      logger
+
+PLATFORMS
+  arm64-darwin-23
+  ruby
+
+DEPENDENCIES
+  benchmark-ips
+  csv
+  rbs (~> 3.9)
+
+BUNDLED WITH
+   2.6.3
diff --git a/Rakefile b/Rakefile
@@ -537,3 +537,11 @@ task :compile_c99 do
 ensure
   ENV.delete("TEST_NO_C23")
 end
+
+
+task :prepare_bench do
+  ENV.delete("DEBUG")
+  Rake::Task[:"clobber"].invoke
+  Rake::Task[:"templates"].invoke
+  Rake::Task[:"compile"].invoke
+end
diff --git a/benchmark.rb b/benchmark.rb
@@ -0,0 +1,11 @@
+require "bundler/setup"
+
+require 'rbs'
+require 'benchmark/ips'
+
+sig = Pathname('/Users/soutaro/Downloads/activerecord-generated.rbs').read
+Benchmark.ips do |x|
+  x.report("rbs v#{RBS::VERSION} parse activerecord-generated.rbs") do
+    RBS::Parser.parse_signature(sig)
+  end
+end
diff --git a/benchmarks.rb b/benchmarks.rb
@@ -0,0 +1,35 @@
+require "rbs"
+require "benchmark/ips"
+require "csv"
+
+results = []
+
+total = ARGV.size
+ARGV.each_with_index do |file, index|
+  GC.start
+
+  STDERR.puts "#{index}/#{total}\tBenchmarking with #{file}..."
+  content = File.read(file)
+
+  benchmark = Benchmark.ips do |x|
+    x.report(file) do
+      RBS::Parser.parse_signature(content)
+    end
+
+    x.quiet = true
+  end
+
+  results << {
+    file: file,
+    size: content.bytesize,
+    ips: benchmark.entries[0].ips,
+    sd: benchmark.entries[0].ips_sd
+  }
+end
+
+puts CSV.generate {|csv|
+  csv << ["File", "Size", "IPS", "SD"]
+  results.each do |result|
+    csv << [result[:file], result[:size], result[:ips], result[:sd]]
+  end
+}