NAME

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

VERSION

This document describes version 0.004 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)       |     24000 |   42      |        1   |         22       | 1.1e-07 |      24 |
 | DateTime->now            |     24000 |   42      |        1   |         22       | 9.3e-08 |      33 |
 | Time::Local::timelocal   |    100000 |    9.8    |        4.3 |          0.055   |   1e-08 |      20 |
 | Time::Piece::localtime   |    190000 |    5.2    |        8.1 |          0.44    | 1.3e-08 |      25 |
 | DateTime::Tiny->now      |    306000 |    3.27   |       12.9 |          0.625   | 1.6e-09 |      22 |
 | Time::Moment->now        |    860000 |    1.2    |       37   |          0.088   | 1.2e-09 |      20 |
 | DateTime::Tiny->new(ymd) |   1400000 |    0.712  |       59.3 |          0.369   | 2.1e-10 |      20 |
 | Time::Moment->new(ymd)   |   2942000 |    0.3399 |      124.2 |          0.08789 | 1.1e-11 |      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             |      59   |                   54.8 |        1   | 8.7e-05 |      20 |
 | Time::Piece         | 1.4                          | 4.7                | 19             |      17   |                   12.8 |        3.5 | 1.8e-05 |      20 |
 | Time::Local         | 1.4                          | 4.8                | 19             |      12   |                    7.8 |        4.8 |   8e-05 |      20 |
 | Time::Moment        | 1                            | 4.5                | 16             |      10   |                    5.8 |        5.9 | 1.8e-05 |      20 |
 | DateTime::Tiny      | 1                            | 4.4                | 16             |       8.3 |                    4.1 |        7.1 | 5.3e-05 |      20 |
 | perl -e1 (baseline) | 11                           | 15                 | 44             |       4.2 |                    0   |       14   | 7.8e-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.

DateTime::Tiny is an alternative for DateTime if you want smaller startup overhead and dependencies. It also creates date objects faster. But the object is still relatively large (a hash of date element fields).

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.

cpanm Bencher::Scenarios::DateModules

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