/ 
Bencher-Scenario-Digest-MD5-0.005
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/ Bencher::Scenario::Digest::MD5

NAME

Bencher::Scenario::Digest::MD5 - Benchmark Digest::MD5 against md5sum utility

VERSION

This document describes version 0.005 of Bencher::Scenario::Digest::MD5 (from Perl distribution Bencher-Scenario-Digest-MD5), released on 2022-03-19.

SYNOPSIS

To run benchmark with default option:

% bencher -m Digest::MD5

To run module startup overhead benchmark:

% bencher --module-startup -m Digest::MD5

For more options (dump scenario, list/include/exclude/add participants, list/include/exclude/add datasets, etc), see bencher or run bencher --help.

DESCRIPTION

Packaging a benchmark script as a Bencher scenario makes it convenient to include/exclude/add participants/datasets (either via CLI or Perl code), send the result to a central repository, among others . See Bencher and bencher (CLI) for more details.

BENCHMARKED MODULES

Version numbers shown below are the versions used when running the sample benchmark.

Digest::MD5 2.58

BENCHMARK PARTICIPANTS

  • md5sum (perl_code)

    Code template:

    my $cmd = "md5sum ".String::ShellQuote::shell_quote(<filename>); my $res = `$cmd`; $res =~ s/\s.+//s; $res

  • Digest::MD5 (perl_code)

    Code template:

    my $ctx = Digest::MD5->new; open my $fh, "<", <filename>; $ctx->addfile($fh); $ctx->hexdigest

BENCHMARK DATASETS

  • 30M_file

SAMPLE BENCHMARK RESULTS

Run on: perl: v5.34.0, CPU: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz (2 cores), OS: GNU/Linux Ubuntu version 20.04, OS kernel: Linux version 5.4.0-91-generic.

Benchmark with default options (bencher -m Digest::MD5):

#table1#
+-------------+-----------+-----------+-----------------------+-----------------------+---------+---------+
| participant | rate (/s) | time (ms) | pct_faster_vs_slowest | pct_slower_vs_fastest |  errors | samples |
+-------------+-----------+-----------+-----------------------+-----------------------+---------+---------+
| md5sum      |      15.7 |      63.5 |                 0.00% |                 4.39% | 4.3e-05 |       7 |
| Digest::MD5 |      16.4 |      60.9 |                 4.39% |                 0.00% | 4.8e-05 |       7 |
+-------------+-----------+-----------+-----------------------+-----------------------+---------+---------+

Formatted as Benchmark.pm result:

                Rate  md5sum  Digest::MD5 
 md5sum       15.7/s      --          -4% 
 Digest::MD5  16.4/s      4%           -- 

Legends:
  Digest::MD5: participant=Digest::MD5
  md5sum: participant=md5sum

Benchmark module startup overhead (bencher -m Digest::MD5 --module-startup):

#table2#
+---------------------+-----------+-------------------+-----------------------+-----------------------+---------+---------+
| participant         | time (ms) | mod_overhead_time | pct_faster_vs_slowest | pct_slower_vs_fastest |  errors | samples |
+---------------------+-----------+-------------------+-----------------------+-----------------------+---------+---------+
| Digest::MD5         |       9.5 |               3.4 |                 0.00% |                55.21% | 1.3e-05 |       6 |
| perl -e1 (baseline) |       6.1 |               0   |                55.21% |                 0.00% | 1.3e-05 |       7 |
+---------------------+-----------+-------------------+-----------------------+-----------------------+---------+---------+

Formatted as Benchmark.pm result:

                         Rate  D:M  perl -e1 (baseline) 
 D:M                  105.3/s   --                 -35% 
 perl -e1 (baseline)  163.9/s  55%                   -- 

Legends:
  D:M: mod_overhead_time=3.4 participant=Digest::MD5
  perl -e1 (baseline): mod_overhead_time=0 participant=perl -e1 (baseline)

To display as an interactive HTML table on a browser, you can add option --format html+datatables.

BENCHMARK NOTES

Since they are both implemented in C, the speeds of both are roughly the same.

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Bencher-Scenario-Digest-MD5.

SOURCE

Source repository is at https://github.com/perlancar/perl-Bencher-Scenario-DigestMD5.

AUTHOR

perlancar <perlancar@cpan.org>

CONTRIBUTING

To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

% prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla plugin and/or Pod::Weaver::Plugin. Any additional steps required beyond that are considered a bug and can be reported to me.

COPYRIGHT AND LICENSE

This software is copyright (c) 2022, 2017, 2016 by perlancar <perlancar@cpan.org>.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Bencher-Scenario-Digest-MD5

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.