benchmark.rb

require 'benchmark/ips'

Dir.chdir ARGV[0] if ARGV[0]

glob ='{app,components,config,frontend,lib,packs,spec,danger,script}/**/*.{rb,arb,erb,rake,js,jsx,ts,tsx}'

Benchmark.ips do |x|
  x.report "Dir.glob" do
    Dir.glob(glob)
  end

  x.report "fd" do |x|
    `fd --full-path --glob '**/*.{rb,arb,erb,rake,js,jsx,ts,tsx}' | grep -e '^app/' -e '^components/' -e '^config' -e '^frontend/' -e '^lib/' -e '^packs/' -e '^spec/' -e '^danger/' -e '^script/'`
  end

  x.compare! order: :baseline
end

results.txt

ruby 3.2.2 (2023-03-30 revision e51014f9c0) [arm64-darwin22]
Warming up --------------------------------------
            Dir.glob     1.000 i/100ms
                  fd     1.000 i/100ms
Calculating -------------------------------------
            Dir.glob      0.060 (± 0.0%) i/s -      1.000 in  16.618777s
                  fd      0.223 (± 0.0%) i/s -      2.000 in   8.952842s

Comparison:
            Dir.glob:        0.1 i/s
                  fd:        0.2 i/s - 3.71x  faster