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Bencher-Scenarios-DateModules-0.002
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/ Bencher::Scenario::DateModules::Creation

NAME

Bencher::Scenario::DateModules::Creation - Benchmark date creation

VERSION

This document describes version 0.002 of Bencher::Scenario::DateModules::Creation (from Perl distribution Bencher-Scenarios-DateModules), released on 2017-01-25.

SYNOPSIS

To run benchmark with default option:

% bencher -m DateModules::Creation

To run module startup overhead benchmark:

% bencher --module-startup -m DateModules::Creation

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.

DateTime 1.36

Time::Moment 0.38

Time::Local 1.2300

Time::Piece 1.31

BENCHMARK PARTICIPANTS

  • DateTime->new(ymd) (perl_code)

    Function call template:

    DateTime->new(year=>2016, month=>4, day=>19)

  • DateTime->now (perl_code)

    Function call template:

    DateTime->now

  • Time::Moment->new(ymd) (perl_code)

    Function call template:

    Time::Moment->new(year=>2016, month=>4, day=>19)

  • Time::Moment->now (perl_code)

    Function call template:

    Time::Moment->now

  • Time::Local::timelocal (perl_code)

    Function call template:

    Time::Local::timelocal(0, 0, 0, 19, 4-1, 2016-1900)

  • Time::Piece::localtime (perl_code)

    Function call template:

    Time::Piece::localtime()

SAMPLE BENCHMARK RESULTS

Run on: perl: v5.24.0, CPU: Intel(R) Core(TM) M-5Y71 CPU @ 1.20GHz (2 cores), OS: GNU/Linux LinuxMint version 17.3, OS kernel: Linux version 3.19.0-32-generic.

Benchmark with default options (bencher -m DateModules::Creation):

#table1#
+------------------------+-----------+-----------+------------+---------+---------+
| participant            | rate (/s) | time (μs) | vs_slowest |  errors | samples |
+------------------------+-----------+-----------+------------+---------+---------+
| DateTime->new(ymd)     |     27000 |     37    |        1   | 5.3e-08 |      20 |
| DateTime->now          |     27000 |     36    |        1   | 5.3e-08 |      20 |
| Time::Local::timelocal |     97000 |     10    |        3.6 |   7e-08 |      26 |
| Time::Piece::localtime |    190000 |      5.1  |        7.2 | 6.5e-09 |      21 |
| Time::Moment->now      |    670000 |      1.5  |       25   | 1.7e-09 |      20 |
| Time::Moment->new(ymd) |   2900000 |      0.34 |      110   | 4.3e-10 |      20 |
+------------------------+-----------+-----------+------------+---------+---------+

Benchmark module startup overhead (bencher -m DateModules::Creation --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 |
+---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+-----------+---------+
| DateTime            | 11                           | 15                 | 44             |      61   |                   56.1 |        1   |   0.00015 |      20 |
| Time::Piece         | 1.5                          | 5.1                | 17             |      18   |                   13.1 |        3.4 | 4.4e-05   |      26 |
| Time::Local         | 1.4                          | 4.7                | 19             |      13   |                    8.1 |        4.7 | 8.4e-05   |      20 |
| Time::Moment        | 1.4                          | 4.7                | 19             |      11   |                    6.1 |        5.6 | 3.7e-05   |      21 |
| perl -e1 (baseline) | 11                           | 15                 | 44             |       4.9 |                    0   |       12   | 1.5e-05   |      20 |
+---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+-----------+---------+

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

BENCHMARK NOTES

Time::Moment is the fastest. It also produces a very compact object (second only to Time::Local, which produces ints). In comparison, DateTime is relatively crazy big.

HOMEPAGE

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

SOURCE

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

BUGS

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

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 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.