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Bencher-Scenarios-RefUtil-0.002
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NAME

Bencher::Scenario::RefUtil - Benchmark Ref::Util

VERSION

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

SYNOPSIS

To run benchmark with default option:

% bencher -m RefUtil

To run module startup overhead benchmark:

% bencher --module-startup -m RefUtil

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.

Ref::Util 0.101

Scalar::Util 1.45

BENCHMARK PARTICIPANTS

  • is_arrayref (perl_code)

    Code template:

    no warnings "void"; state $ref = []; Ref::Util::is_arrayref($ref) for 1..1000

  • is_plain_arrayref (perl_code)

    Code template:

    no warnings "void"; state $ref = []; Ref::Util::is_plain_arrayref($ref) for 1..1000

  • ref(ARRAY) (perl_code)

    Code template:

    no warnings "void"; state $ref = []; ref($ref) eq "ARRAY" for 1..1000

  • reftype(ARRAY) (perl_code)

    Code template:

    no warnings "void"; state $ref = []; Scalar::Util::reftype($ref) eq "ARRAY" for 1..1000

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 RefUtil):

#table1#
+-------------------+-----------+-----------+------------+---------+---------+
| participant       | rate (/s) | time (μs) | vs_slowest |  errors | samples |
+-------------------+-----------+-----------+------------+---------+---------+
| reftype(ARRAY)    |   11900   |   83.8    |    1       | 2.7e-08 |      20 |
| is_plain_arrayref |   20542.3 |   48.6801 |    1.72185 |   0     |      22 |
| ref(ARRAY)        |   21000   |   47.5    |    1.76    | 1.3e-08 |      20 |
| is_arrayref       |   21195.9 |   47.1789 |    1.77664 | 2.7e-11 |      20 |
+-------------------+-----------+-----------+------------+---------+---------+

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

#table2#
+---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+
| participant         | proc_private_dirty_size (kB) | proc_rss_size (MB) | proc_size (MB) | time (ms) | mod_overhead_time (ms) | vs_slowest |  errors | samples |
+---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+
| Scalar::Util        | 844                          | 4.17               | 16             |      9.14 |                   4.14 |       1    | 8.8e-06 |    1016 |
| Ref::Util           | 1016                         | 4.36               | 18.1           |      8.7  |                   3.7  |       1.05 | 8.5e-06 |     836 |
| perl -e1 (baseline) | 1016                         | 4.37               | 18.1           |      5    |                   0    |       1.83 | 4.8e-06 |     290 |
+---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+

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

BENCHMARK NOTES

I'm not seeing significant performance difference between ref() eq "ARRAY" and is_arrayref() on my perls. Am I doing something wrong?

HOMEPAGE

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

SOURCE

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

BUGS

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

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

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.