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@SamSaffron

SamSaffron/benchmark

Created May 19, 2016
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#!/usr/bin/env ruby
$: << File.dirname(__FILE__)+'/lib'
require 'benchmark/ips'
require 'fast_blank'
class String
# active support implementation
def slow_blank?
/\A[[:space:]]*\z/ === self
end
def new_slow_blank?
empty? || !(/[[:^space:]]/ === self)
end
def ruby_24_blank?
/\A[[:space:]]*\z/.match?(self)
end
end
test_strings = [
"",
"\r\n\r\n ",
"this is a test",
" this is a longer test",
" this is a longer test
this is a longer test
this is a longer test
this is a longer test
this is a longer test"
]
$has_match = (//.respond_to? :match?)
test_strings.each do |s|
raise "failed on #{s.inspect}" if s.blank? != s.slow_blank?
raise "failed on #{s.inspect}" if s.blank? != s.new_slow_blank?
if $has_match
# disabled while //.match?"" returns nil (bug)
# raise "failed on #{s.inspect}" if s.blank? != s.ruby_24_blank?
end
end
test_strings.each do |s|
puts "\n================== Test String Length: #{s.length} =================="
Benchmark.ips do |x|
x.report("Fast Blank") do |times|
i = 0
while i < times
s.blank?
i += 1
end
end
x.report("Fast ActiveSupport") do |times|
i = 0
while i < times
s.blank_as?
i += 1
end
end
x.report("Slow Blank") do |times|
i = 0
while i < times
s.slow_blank?
i += 1
end
end
x.report("New Slow Blank") do |times|
i = 0
while i < times
s.new_slow_blank?
i += 1
end
end
if $has_match
x.report("Ruby 2.4 match?") do |times|
i = 0
while i < times
s.ruby_24_blank?
i += 1
end
end
end
x.compare!
end
end
# ================== Test String Length: 0 ==================
# Calculating -------------------------------------
# Fast Blank 113.770k i/100ms
# Fast ActiveSupport 116.284k i/100ms
# Slow Blank 46.705k i/100ms
# New Slow Blank 112.101k i/100ms
# Ruby 2.4 match? 93.092k i/100ms
# -------------------------------------------------
# Fast Blank 18.535M (±11.0%) i/s - 91.357M
# Fast ActiveSupport 18.789M (±10.4%) i/s - 92.795M
# Slow Blank 1.022M (± 7.3%) i/s - 5.091M
# New Slow Blank 19.926M (± 9.8%) i/s - 98.537M
# Ruby 2.4 match? 10.868M (± 8.8%) i/s - 53.900M
#
# Comparison:
# New Slow Blank: 19925554.0 i/s
# Fast ActiveSupport: 18788918.1 i/s - 1.06x slower
# Fast Blank: 18534902.4 i/s - 1.08x slower
# Ruby 2.4 match?: 10868476.1 i/s - 1.83x slower
# Slow Blank: 1021987.5 i/s - 19.50x slower
#
#
# ================== Test String Length: 6 ==================
# Calculating -------------------------------------
# Fast Blank 96.829k i/100ms
# Fast ActiveSupport 111.282k i/100ms
# Slow Blank 44.464k i/100ms
# New Slow Blank 68.832k i/100ms
# Ruby 2.4 match? 76.882k i/100ms
# -------------------------------------------------
# Fast Blank 8.746M (± 7.6%) i/s - 43.476M
# Fast ActiveSupport 8.807M (± 7.5%) i/s - 43.845M
# Slow Blank 865.704k (± 6.6%) i/s - 4.313M
# New Slow Blank 2.394M (± 7.3%) i/s - 11.908M
# Ruby 2.4 match? 4.498M (± 6.6%) i/s - 22.450M
#
# Comparison:
# Fast ActiveSupport: 8807338.9 i/s
# Fast Blank: 8745689.7 i/s - 1.01x slower
# Ruby 2.4 match?: 4498359.7 i/s - 1.96x slower
# New Slow Blank: 2394093.5 i/s - 3.68x slower
# Slow Blank: 865704.4 i/s - 10.17x slower
#
#
# ================== Test String Length: 14 ==================
# Calculating -------------------------------------
# Fast Blank 108.509k i/100ms
# Fast ActiveSupport 112.127k i/100ms
# Slow Blank 63.625k i/100ms
# New Slow Blank 38.425k i/100ms
# Ruby 2.4 match? 76.900k i/100ms
# -------------------------------------------------
# Fast Blank 15.941M (± 9.0%) i/s - 78.886M
# Fast ActiveSupport 16.571M (± 8.7%) i/s - 82.077M
# Slow Blank 2.348M (± 9.9%) i/s - 11.643M
# New Slow Blank 951.381k (± 5.2%) i/s - 4.765M
# Ruby 2.4 match? 6.432M (± 5.5%) i/s - 32.067M
#
# Comparison:
# Fast ActiveSupport: 16570765.1 i/s
# Fast Blank: 15941098.1 i/s - 1.04x slower
# Ruby 2.4 match?: 6432466.4 i/s - 2.58x slower
# Slow Blank: 2348113.3 i/s - 7.06x slower
# New Slow Blank: 951380.6 i/s - 17.42x slower
#
#
# ================== Test String Length: 24 ==================
# Calculating -------------------------------------
# Fast Blank 113.828k i/100ms
# Fast ActiveSupport 115.010k i/100ms
# Slow Blank 69.520k i/100ms
# New Slow Blank 43.616k i/100ms
# Ruby 2.4 match? 70.745k i/100ms
# -------------------------------------------------
# Fast Blank 10.181M (±10.0%) i/s - 50.312M
# Fast ActiveSupport 10.704M (±10.3%) i/s - 52.905M
# Slow Blank 2.000M (± 6.6%) i/s - 10.011M
# New Slow Blank 910.198k (± 7.0%) i/s - 4.536M
# Ruby 2.4 match? 4.125M (± 7.1%) i/s - 20.516M
#
# Comparison:
# Fast ActiveSupport: 10703759.1 i/s
# Fast Blank: 10180744.9 i/s - 1.05x slower
# Ruby 2.4 match?: 4125002.8 i/s - 2.59x slower
# Slow Blank: 2000197.5 i/s - 5.35x slower
# New Slow Blank: 910198.2 i/s - 11.76x slower
#
#
# ================== Test String Length: 136 ==================
# Calculating -------------------------------------
# Fast Blank 108.669k i/100ms
# Fast ActiveSupport 113.360k i/100ms
# Slow Blank 61.259k i/100ms
# New Slow Blank 42.269k i/100ms
# Ruby 2.4 match? 79.272k i/100ms
# -------------------------------------------------
# Fast Blank 10.282M (±10.7%) i/s - 50.748M
# Fast ActiveSupport 11.306M (± 8.0%) i/s - 56.113M
# Slow Blank 2.122M (± 6.3%) i/s - 10.598M
# New Slow Blank 1.037M (± 4.8%) i/s - 5.199M
# Ruby 2.4 match? 4.419M (± 6.3%) i/s - 22.038M
#
# Comparison:
# Fast ActiveSupport: 11305782.5 i/s
# Fast Blank: 10281574.6 i/s - 1.10x slower
# Ruby 2.4 match?: 4419110.0 i/s - 2.56x slower
# Slow Blank: 2121790.2 i/s - 5.33x slower
# New Slow Blank: 1036703.8 i/s - 10.91x slower
#
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