Liquid, Handlebars, Erb and gsub benchmarks

benchmark.rb

require 'rubygems'
require 'benchmark'
require 'ruby-handlebars'
require 'cgi'
require 'liquid'
require 'erb'

input = ("a".."z").map { |letter| [letter, letter] }.to_h
n = 50_000
hbs = Handlebars::Handlebars.new

Benchmark.bm do |benchmark|
  benchmark.report("handlebars") do
    n.times do
      hbs.compile("Hello {{name}}").call({ name: 'world' })
    end
  end

  benchmark.report("liquid") do
    n.times do
      Liquid::Template.parse("Hello {{name}}").render({ name: 'world' })
    end
  end

  benchmark.report("erb") do
    n.times do
      ERB.new("Hello <%= name %>").result_with_hash({ name: 'world' })
    end
  end

  benchmark.report("gsub") do
    n.times do
      "Hello {{name}}".gsub('{{name}}', 'world')
    end
  end
end

Gemfile

# frozen_string_literal: true

source "https://rubygems.org"

git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }

gem 'liquid'
gem 'ruby-handlebars'

Results.md

            user       system     total     real
liquid      26.567868  0.136828   26.704696 ( 27.704823)
handlebars  1.579311   0.005023   1.584334  (  1.613605)
erb         2.157431   0.007026   2.164457  (  2.187186)
gsub        0.047701   0.000408   0.048109  (  0.055053)

Hey @lucasprag, I believe the name of the reports are swapped: you're reporting liquid for the handlebars results and viceversa

These are the stats on my machine with the labels corrected,

library	user	system	total	real
handlebars	19.023716	0.050215	19.073931	( 19.264012)
liquid	1.631314	0.006280	1.637594	( 1.665485)
erb	1.883368	0.006673	1.890041	( 1.921382)
gsub	0.044841	0.000206	0.045047	( 0.049943)

my config: