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Bencher-Scenarios-DateModules-0.003
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NAME

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

VERSION

This document describes version 0.003 of Bencher::Scenario::DateModules::Creation (from Perl distribution Bencher-Scenarios-DateModules), released on 2017-08-27.

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

DateTime::Tiny 1.06

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

  • DateTime::Tiny->new(ymd) (perl_code)

    Function call template:

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

  • DateTime::Tiny->now (perl_code)

    Function call template:

    DateTime::Tiny->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 | result_size (kB) |  errors | samples |
+--------------------------+-----------+-----------+------------+------------------+---------+---------+
| DateTime->new(ymd)       |     27000 |    38     |       1    |          22      | 6.5e-08 |      21 |
| DateTime->now            |     27000 |    37     |       1    |          22      | 3.9e-08 |      21 |
| Time::Local::timelocal   |    113000 |     8.84  |       4.25 |           0.0547 | 3.3e-09 |      20 |
| Time::Piece::localtime   |    200000 |     5     |       7.6  |           0.44   | 6.5e-09 |      21 |
| DateTime::Tiny->now      |    331000 |     3.02  |      12.4  |           0.625  | 2.5e-09 |      20 |
| Time::Moment->now        |    946000 |     1.06  |      35.5  |           0.0879 | 4.2e-10 |      20 |
| DateTime::Tiny->new(ymd) |   1700000 |     0.589 |      63.8  |           0.369  | 2.1e-10 |      20 |
| Time::Moment->new(ymd)   |   3200000 |     0.31  |     120    |           0.088  | 8.1e-10 |      21 |
+--------------------------+-----------+-----------+------------+------------------+---------+---------+

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            | 11.1                         | 15                 | 44.5           |      59.4 |                   53.4 |        1   | 4.5e-05 |      21 |
| Time::Piece         | 1.4                          | 4.8                | 19             |      19   |                   13   |        3.2 | 2.7e-05 |      20 |
| Time::Local         | 1.4                          | 4.7                | 19             |      14   |                    8   |        4.3 | 3.2e-05 |      20 |
| Time::Moment        | 1                            | 4.4                | 16             |      12   |                    6   |        5   | 1.6e-05 |      20 |
| DateTime::Tiny      | 1                            | 4.4                | 16             |      10   |                    4   |        6   | 1.9e-05 |      20 |
| perl -e1 (baseline) | 11                           | 15                 | 44             |       6   |                    0   |        9.9 | 9.4e-06 |      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.