NAME

Bencher::Scenario::DigestMD5 - Benchmark Digest::MD5 against md5sum utility

VERSION

This document describes version 0.004 of Bencher::Scenario::DigestMD5 (from Perl distribution Bencher-Scenario-DigestMD5), released on 2017-07-10.

SYNOPSIS

To run benchmark with default option:

 % bencher -m DigestMD5

To run module startup overhead benchmark:

 % bencher --module-startup -m DigestMD5

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 2.55

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: v5.26.0, CPU: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz (4 cores), OS: GNU/Linux Debian version 8.0, OS kernel: Linux version 3.16.0-4-amd64.

Benchmark with default options (bencher -m DigestMD5):

 #table1#
 +-------------+-----------+-----------+------------+---------+---------+
 | participant | rate (/s) | time (ms) | vs_slowest |  errors | samples |
 +-------------+-----------+-----------+------------+---------+---------+
 | Digest::MD5 |        15 |      66.8 |          1 | 3.6e-05 |       6 |
 | md5sum      |        15 |      66.7 |          1 | 2.6e-05 |       6 |
 +-------------+-----------+-----------+------------+---------+---------+

Benchmark module startup overhead (bencher -m DigestMD5 --module-startup):

 #table2#
 +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+
 | participant         | proc_private_dirty_size (kB) | proc_rss_size (MB) | proc_size (MB) | time (ms) | mod_overhead_time (ms) | vs_slowest |  errors | samples |
 +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+
 | Digest::MD5         | 1116                         | 4.5                | 22             |      10   |                    4.7 |        1   |   6e-05 |       7 |
 | perl -e1 (baseline) | 1056                         | 4.5                | 20             |       5.3 |                    0   |        1.9 | 5.3e-05 |       7 |
 +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+

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-DigestMD5.

SOURCE

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

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Bencher-Scenario-DigestMD5

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.

AUTHOR

perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2017, 2016 by 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.