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@morimori
Created November 1, 2011 07:29
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ruby Digest::* benchmark
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]
Rehearsal ------------------------------------------
MD5 1.010000 0.000000 1.010000 ( 1.026340)
SHA1 1.710000 0.000000 1.710000 ( 1.724464)
SHA2 3.780000 0.000000 3.780000 ( 3.824757)
SHA256 3.460000 0.010000 3.470000 ( 3.498111)
--------------------------------- total: 9.970000sec
user system total real
MD5 1.020000 0.000000 1.020000 ( 1.025751)
SHA1 1.700000 0.000000 1.700000 ( 1.723694)
SHA2 3.770000 0.000000 3.770000 ( 3.816861)
SHA256 3.450000 0.010000 3.460000 ( 3.490535)
require 'digest/sha1'
require 'digest/sha2'
require 'benchmark'
SRC = File.read '/dev/urandom', 4096
Benchmark.bmbm do |bm|
bm.report('MD5') { 100000.times{ Digest::MD5.hexdigest SRC } }
bm.report('SHA1') { 100000.times{ Digest::SHA1.hexdigest SRC } }
bm.report('SHA2') { 100000.times{ Digest::SHA2.hexdigest SRC } }
bm.report('SHA256') { 100000.times{ Digest::SHA256.hexdigest SRC } }
end
ruby 1.8.7 (2011-02-18 patchlevel 334) [x86_64-linux], MBARI 0x6770, Ruby Enterprise Edition 2011.03
Rehearsal ------------------------------------------
MD5 1.200000 0.000000 1.200000 ( 1.215786)
SHA1 1.900000 0.000000 1.900000 ( 1.923869)
SHA2 4.240000 0.000000 4.240000 ( 4.280306)
SHA256 3.640000 0.000000 3.640000 ( 3.675077)
-------------------------------- total: 10.980000sec
user system total real
MD5 1.200000 0.000000 1.200000 ( 1.213259)
SHA1 1.910000 0.000000 1.910000 ( 1.929293)
SHA2 4.240000 0.010000 4.250000 ( 4.289109)
SHA256 3.640000 0.000000 3.640000 ( 3.668232)
@BookOfGreg
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ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-darwin16]

Rehearsal ------------------------------------------
MD5      0.630000   0.000000   0.630000 (  0.641205)
SHA1     0.500000   0.000000   0.500000 (  0.498556)
SHA2     1.060000   0.010000   1.070000 (  1.068877)
SHA256   1.030000   0.000000   1.030000 (  1.031443)
--------------------------------- total: 3.230000sec

             user     system      total        real
MD5      0.660000   0.010000   0.670000 (  0.663826)
SHA1     0.520000   0.000000   0.520000 (  0.520652)
SHA2     1.090000   0.000000   1.090000 (  1.094845)
SHA256   1.030000   0.000000   1.030000 (  1.027715)

Ruby SHA1 became faster at some point.

@duarme
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duarme commented Dec 8, 2020

SHA1 is still pushing ahead.

ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-darwin19]

Rehearsal ------------------------------------------
MD5      0.679635   0.001569   0.681204 (  0.682606)
SHA1     0.353058   0.000833   0.353891 (  0.354815)
SHA2     0.494869   0.001247   0.496116 (  0.497209)
SHA256   0.438576   0.001491   0.440067 (  0.442002)
--------------------------------- total: 1.971278sec

             user     system      total        real
MD5      0.689410   0.001597   0.691007 (  0.692521)
SHA1     0.351183   0.000932   0.352115 (  0.352880)
SHA2     0.498587   0.002104   0.500691 (  0.502838)
SHA256   0.434150   0.001679   0.435829 (  0.437912)

@vtt
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vtt commented Nov 26, 2021

Any idea why Ruby 3.x is much slower than Ruby 2.x with Digest performances?

ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x86_64-linux]

Rehearsal ------------------------------------------
MD5      0.574656   0.000119   0.574775 (  0.574811)
SHA1     0.261374   0.000011   0.261385 (  0.261393)
SHA2     0.336301   0.000003   0.336304 (  0.336328)
SHA256   0.281675   0.000000   0.281675 (  0.281701)
--------------------------------- total: 1.454139sec

             user     system      total        real
MD5      0.571611   0.000000   0.571611 (  0.571662)
SHA1     0.262690   0.000000   0.262690 (  0.262703)
SHA2     0.336247   0.000001   0.336248 (  0.336277)
SHA256   0.280140   0.000000   0.280140 (  0.280164)

ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) [x86_64-linux]

Rehearsal ------------------------------------------
MD5      0.599872   0.000192   0.600064 (  0.600097)
SHA1     0.572730   0.000011   0.572741 (  0.572760)
SHA2     1.567906   0.000001   1.567907 (  1.567991)
SHA256   1.519071   0.000000   1.519071 (  1.519210)
--------------------------------- total: 4.259783sec

             user     system      total        real
MD5      0.598482   0.000000   0.598482 (  0.598519)
SHA1     0.573576   0.000000   0.573576 (  0.573655)
SHA2     1.560271   0.000000   1.560271 (  1.560460)
SHA256   1.519918   0.000000   1.519918 (  1.520137)

@phigrofi
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On a debian system with ruby 3.2.0 Digest::MD5 and OpenSSL::Digest::MD5 have very different results for me.
On my M1 Mac they are mostly the same.

require 'benchmark'
require 'openssl'
require 'digest'

SRC = File.read '/dev/urandom', 4096

Benchmark.bmbm do |bm|
  bm.report('MD5') { 100000.times{ Digest::MD5.hexdigest(SRC) } }
  bm.report('MD5 OpenSSL') { 100000.times{ OpenSSL::Digest::MD5.new.hexdigest(SRC) } }
end
                    user     system      total        real
MD5             2.649720   0.000000   2.649720 (  2.649962)
MD5 OpenSSL     1.030964   0.000000   1.030964 (  1.031064)

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