Time comparison ActiveSupport vs Gem Twitter Static Time Constants w Ruby Benchmark

gistfile1.rb

require 'rubygems'

# Set up gems listed in the Gemfile.
ENV['BUNDLE_GEMFILE'] ||= File.expand_path('Gemfile', __FILE__)

require 'bundler/setup' if File.exists?(ENV['BUNDLE_GEMFILE'])

require 'rails/all'
require 'time_constants'

N = 1000000

to    = Time.local(2008, 12, 27, 14, 30, 59)
from  = Time.local(2008, 12, 29, 14, 30, 59)

# from.day - to.day => 2 

# know number of hours since to now
Benchmark.bmbm do |x|

  x.report('with active support') { N.times {
    age = from.day - Time.now.day
    case
    when age < 7
      'green' # Normally 
    when age > 15
      'red' # Critical
    else
      'orange' # On transition
    end
  } }
  
  x.report('with constants w .to_i') { N.times {
    age = from.to_i - Time.now.to_i
    case
    when age < T_7_DAYS
      'green' # Normally 
    when age > T_15_DAYS
      'red' # Critical
    else
      'orange' # On transition
    end
  } }
    
  x.report('with constants') { N.times {
    age = from - Time.now
    case
    when age < T_7_DAYS
      'green' # Normally 
    when age > T_15_DAYS
      'red' # Critical
    else
      'orange' # On transition
    end
  } }

end

#                              user     system      total        real
# with active support      5.710000   0.030000   5.740000 (  6.170684)
# with constants w .to_i   1.870000   0.020000   1.890000 (  1.975625)
# with constants           3.990000   0.020000   4.010000 (  4.410851)

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