benchmark.rb

# frozen_string_literal: true

require "#{File.dirname(__FILE__)}/setup"

require 'log4jruby'
require 'benchmark'

Log4jruby::Logger.root.log4j_logger.removeAllAppenders
OUT = File.open('/dev/null', 'a').freeze

formatter = Class.new do
  def call(_severity, _time, _name, msg)
    msg
  end
end.new

root_logger = Log4jruby::Logger.root
log4j = root_logger.log4j_logger
std_logger = ::Logger.new(OUT)
logger_a = Log4jruby::Logger.get('a')
logger_a_b = Log4jruby::Logger.get('a.b')
logger_c = Log4jruby::Logger.get('c', tracing: true)
logger_d = Log4jruby::Logger.get('d', formatter: formatter)

root_logger.debug('warmup')

repeat = 200_000

puts "Benchmark with #{repeat} log statements"

Benchmark.bmbm do |x|
  x.report('puts')   { (1..repeat).each { |i| OUT.puts(i) } }
  x.report('standard logger') { (1..repeat).each { |i| std_logger.debug(i) } }
  x.report('raw log4j') { (1..repeat).each { |i| log4j.debug(i) } }
  x.report('root') { (1..repeat).each { |i| root_logger.debug(i) } }
  x.report('a') { (1..repeat).each { |i| logger_a.debug(i) } }
  x.report('a.b') { (1..repeat).each { |i| logger_a_b.debug(i) } }
  x.report('w. tracing') { (1..repeat).each { |i| logger_c.debug(i) } }
  x.report('w. formatter') { (1..repeat).each { |i| logger_d.debug(i) } }
end

OUT.close