NAME

Bencher::Scenario::DigestSHA1 - Benchmark Digest::SHA1 against Digest::SHA

VERSION

This document describes version 0.003 of Bencher::Scenario::DigestSHA1 (from Perl distribution Bencher-Scenario-DigestSHA1), released on 2017-07-10.

SYNOPSIS

To run benchmark with default option:

 % bencher -m DigestSHA1

To run module startup overhead benchmark:

 % bencher --module-startup -m DigestSHA1

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::SHA1 2.13

Digest::SHA 5.96

BENCHMARK PARTICIPANTS

• Digest::SHA1 (perl_code)

  Code template:

   my $ctx = Digest::SHA1->new; open my $fh, "<", <filename>; $ctx->addfile($fh); $ctx->hexdigest

• Digest::SHA (perl_code)

  Code template:

   my $ctx = Digest::SHA->new(1); 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 DigestSHA1):

 #table1#
 +--------------+-----------+-----------+------------+---------+---------+
 | participant  | rate (/s) | time (ms) | vs_slowest |  errors | samples |
 +--------------+-----------+-----------+------------+---------+---------+
 | Digest::SHA1 |      5.92 |       169 |        1   | 0.00011 |       6 |
 | Digest::SHA  |      9.8  |       100 |        1.7 | 0.00036 |       6 |
 +--------------+-----------+-----------+------------+---------+---------+

Benchmark module startup overhead (bencher -m DigestSHA1 --module-startup):

 #table2#
 +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+----------+---------+
 | participant         | proc_private_dirty_size (MB) | proc_rss_size (MB) | proc_size (MB) | time (ms) | mod_overhead_time (ms) | vs_slowest |  errors  | samples |
 +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+----------+---------+
 | Digest::SHA         | 0.828                        | 4.2                | 20.1           |      13.8 |                    8.4 |        1   | 1.2e-05  |       6 |
 | Digest::SHA1        | 1.5                          | 5                  | 25             |      11   |                    5.6 |        1.2 |   0.0001 |       6 |
 | perl -e1 (baseline) | 1.2                          | 4.6                | 22             |       5.4 |                    0   |        2.5 | 5.4e-05  |       6 |
 +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+----------+---------+

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

BENCHMARK NOTES

Digest::SHA is faster than Digest::SHA1, so in general there is no reason to use Digest::SHA1 over Digest::SHA (core module, more up-to-date, support more algorithms).

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Bencher-Scenario-DigestSHA1.

SOURCE

Source repository is at https://github.com/perlancar/perl-Bencher-Scenario-DigestSHA1.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Bencher-Scenario-DigestSHA1

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.

SEE ALSO

See Bencher::Scenarios::DigestSHA for more SHA-related benchmarks.

AUTHOR

perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2017 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.

cpanm Bencher::Scenario::DigestSHA1

perl -MCPAN -e shell
install Bencher::Scenario::DigestSHA1