?????????watir-webdriver???в?????????????????1??Firebox???????????????????????????????ж??????????????????????

# encoding: utf-8
t_start_require = Time.new
require 'rubygems'
require 'watir-webdriver'
t_end_require = Time.new
require_time = t_end_require - t_start_require
puts 'require_time ' +require_time.to_s
%w[firefox chrome].each do |b|
@b = Watir::Browser.new b.to_sym
t_end_browser = Time.new
browser_time = t_end_browser - t_end_require - browser_time
puts b + ' start browser time is ' + browser_time.to_s
@b.close
end

  ?????????￡?

????require_time 1.422 firefox start browser time is 9.198 chrome start browser time is 11.725

??????????????????????????????chrome?????????11.725 - 9.198 = 2.5

???????????????????μ?????

??????????rubygems??watir-webdriver??????1.5?????? ???firefox???9?????? ???chrome???2.5??????

?????????????????AMD3.0 4???4G??棬?????????????????????????Щ??仯?????????????????????firefox??????????????????

???????????????firefox?????????????????????firefox????????????????firefox???????????????????????????????