Ruby :: benchmark of different digests

digest_benchmark.rb

require 'benchmark/ips'

n = 500000

require 'digest/md5'
require 'digest/sha1'
require 'digest/sha2'
require 'digest/sha3' # https://github.com/phusion/digest-sha3-ruby

INPUT = [5, "Hello, world", nil]

Benchmark.ips do |x|
  x.config(:time => 5, :warmup => 2)

  x.report('md5')      { Digest::MD5.hexdigest(INPUT.inspect) }
  x.report('sha1')     { Digest::SHA1.hexdigest(INPUT.inspect) }
  x.report('sha2')     { Digest::SHA2.hexdigest(INPUT.inspect) }
  x.report('sha3/224') { Digest::SHA3.hexdigest(INPUT.inspect, 224) }
  x.report('sha3/512') { Digest::SHA3.hexdigest(INPUT.inspect) }
  x.compare!
end

# Warming up --------------------------------------
#                  md5    47.385k i/100ms
#                 sha1    47.681k i/100ms
#                 sha2    35.042k i/100ms
#             sha3/224    26.992k i/100ms
#             sha3/512    27.186k i/100ms
# Calculating -------------------------------------
#                  md5    540.017k (± 2.4%) i/s -      2.701M in   5.004540s
#                 sha1    521.016k (± 2.3%) i/s -      2.622M in   5.035980s
#                 sha2    372.515k (± 3.8%) i/s -      1.892M in   5.087371s
#             sha3/224    293.976k (± 2.2%) i/s -      1.485M in   5.052466s
#             sha3/512    289.137k (± 2.0%) i/s -      1.468M in   5.079475s
# 
# Comparison:
#                  md5:   540017.0 i/s
#                 sha1:   521015.8 i/s - same-ish: difference falls within error
#                 sha2:   372515.3 i/s - 1.45x  slower
#             sha3/224:   293976.3 i/s - 1.84x  slower
#             sha3/512:   289136.6 i/s - 1.87x  slower