NAME

Bencher::Scenario::DigestSHA::SHA1 - Benchmark Digest::SHA against sha1sum

VERSION

This document describes version 0.003 of Bencher::Scenario::DigestSHA::SHA1 (from Perl distribution Bencher-Scenarios-DigestSHA), released on 2017-07-10.

SYNOPSIS

To run benchmark with default option:

 % bencher -m DigestSHA::SHA1

To run module startup overhead benchmark:

 % bencher --module-startup -m DigestSHA::SHA1

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.

String::ShellQuote 1.04

Digest::SHA 5.96

BENCHMARK PARTICIPANTS

• sha1sum (perl_code)

  Code template:

   my $cmd = "sha1sum ".String::ShellQuote::shell_quote(<filename>); my $res = `$cmd`; $res =~ s/\s.+//s; $res

• 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 DigestSHA::SHA1):

 #table1#
 +-------------+-----------+-----------+------------+---------+---------+
 | participant | rate (/s) | time (ms) | vs_slowest |  errors | samples |
 +-------------+-----------+-----------+------------+---------+---------+
 | Digest::SHA |     9.729 |     102.8 |        1   |   5e-06 |       6 |
 | sha1sum     |    10.7   |      93.3 |        1.1 | 6.2e-05 |       6 |
 +-------------+-----------+-----------+------------+---------+---------+

Benchmark module startup overhead (bencher -m DigestSHA::SHA1 --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         | 0.83                         | 4.1                | 20             |      14   |                    9   |        1   |   3e-05 |       6 |
 | String::ShellQuote  | 1.5                          | 5                  | 25             |       9.4 |                    4.4 |        1.4 | 4.2e-05 |       6 |
 | perl -e1 (baseline) | 1                            | 4                  | 20             |       5   |                    0   |        3   | 5.5e-05 |       6 |
 +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+

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

BENCHMARK NOTES

HOMEPAGE

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

SOURCE

Source repository is at https://github.com/perlancar/perl-Bencher-Scenarios-DigestSHA.

BUGS

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

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.

cpanm Bencher::Scenarios::DigestSHA

perl -MCPAN -e shell
install Bencher::Scenarios::DigestSHA