/ 
Bencher-Scenario-DigestMD5-0.001
River stage one • 1 direct dependent • 1 total dependent
/ Bencher::Scenario::DigestMD5

NAME

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

VERSION

This document describes version 0.001 of Bencher::Scenario::DigestMD5 (from Perl distribution Bencher-Scenario-DigestMD5), released on 2016-11-21.

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 2.54

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: v5.24.0, CPU: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz (4 cores), OS: GNU/Linux Debian version 8.5, 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 |
+-------------+-----------+-----------+------------+---------+---------+
| md5sum      |      20.6 |      48.6 |       1    | 1.2e-05 |       6 |
| Digest::MD5 |      21.3 |      46.9 |       1.04 | 9.1e-06 |       6 |
+-------------+-----------+-----------+------------+---------+---------+

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

#table2#
+---------------------+-----------+------------------------+------------+---------+---------+
| participant         | time (ms) | mod_overhead_time (ms) | vs_slowest |  errors | samples |
+---------------------+-----------+------------------------+------------+---------+---------+
| Digest::MD5         |       5.5 |                    3.1 |        1   | 2.2e-05 |       6 |
| perl -e1 (baseline) |       2.4 |                    0   |        2.3 | 3.2e-06 |       6 |
+---------------------+-----------+------------------------+------------+---------+---------+

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) 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.