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mkroman/digest-sha256-file-vs-system-sha256sum.rb

Last active October 21, 2024 14:44
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Revisions

  1. mkroman revised this gist Mar 17, 2019. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion digest-sha256-file-vs-system-sha256sum.rb
    View file
    Original file line number Diff line number Diff line change
    @@ -23,7 +23,7 @@
    file.unlink
    # mk@… ~/Projects/Sandbox % ruby digest-sha256-file-vs-system-sha256sum.rb
    # Warming up --------------------------------------
    # Digest::SHA256.file 72.000 i/100ms
    # Digest::SHA256.file 72.000 i/100ms
    # `sha256sum` 44.000 i/100ms
    # Calculating -------------------------------------
    # Digest::SHA256.file 738.569 (± 2.0%) i/s - 3.744k in 5.071405s
  2. mkroman revised this gist Mar 17, 2019. 1 changed file with 8 additions and 8 deletions.
    16 changes: 8 additions & 8 deletions digest-sha256-file-vs-system-sha256sum.rb
    View file
    Original file line number Diff line number Diff line change
    @@ -21,11 +21,11 @@

    file.close
    file.unlink
    mk@… ~/Projects/Sandbox % ruby digest-sha256-file-vs-system-sha256sum.rb
    Warming up --------------------------------------
    Digest::SHA256.file 72.000 i/100ms
    `sha256sum` 44.000 i/100ms
    Calculating -------------------------------------
    Digest::SHA256.file 738.569 (± 2.0%) i/s - 3.744k in 5.071405s
    `sha256sum` 457.612 (± 7.9%) i/s - 2.288k in 5.034049s
    ruby digest-sha256-file-vs-system-sha256sum.rb 10,21s user 4,17s system 99% cpu 14,393 total
    # mk@… ~/Projects/Sandbox % ruby digest-sha256-file-vs-system-sha256sum.rb
    # Warming up --------------------------------------
    # Digest::SHA256.file 72.000 i/100ms
    # `sha256sum` 44.000 i/100ms
    # Calculating -------------------------------------
    # Digest::SHA256.file 738.569 (± 2.0%) i/s - 3.744k in 5.071405s
    # `sha256sum` 457.612 (± 7.9%) i/s - 2.288k in 5.034049s
    # ruby digest-sha256-file-vs-system-sha256sum.rb 10,21s user 4,17s system 99% cpu 14,393 total
  3. mkroman renamed this gist Mar 17, 2019. 1 changed file with 0 additions and 0 deletions.
    0 digest-sha256-file-vs-system-sha256sum → digest-sha256-file-vs-system-sha256sum.rb
    View file
    File renamed without changes.
  4. mkroman created this gist Mar 8, 2019.
    31 changes: 31 additions & 0 deletions digest-sha256-file-vs-system-sha256sum
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1,31 @@
    mk@… ~/Projects/Sandbox % cat digest-sha256-file-vs-system-sha256sum.rb
    #!/usr/bin/env ruby

    require 'tempfile'
    require 'digest/sha2'

    require 'benchmark/ips'

    file = Tempfile.new 'testfile'
    file.write 'a' * 1024 * 1024 * 2

    Benchmark.ips do |x|
    x.report 'Digest::SHA256.file' do
    Digest::SHA256.file(file.path).hexdigest
    end

    x.report '`sha256sum`' do
    `sha256sum #{file.path}`.strip
    end
    end

    file.close
    file.unlink
    mk@… ~/Projects/Sandbox % ruby digest-sha256-file-vs-system-sha256sum.rb
    Warming up --------------------------------------
    Digest::SHA256.file 72.000 i/100ms
    `sha256sum` 44.000 i/100ms
    Calculating -------------------------------------
    Digest::SHA256.file 738.569 (± 2.0%) i/s - 3.744k in 5.071405s
    `sha256sum` 457.612 (± 7.9%) i/s - 2.288k in 5.034049s
    ruby digest-sha256-file-vs-system-sha256sum.rb 10,21s user 4,17s system 99% cpu 14,393 total