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Bencher-Scenario-NormalRandom-0.002
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NAME

Bencher::Scenario::NormalRandom - Benchmark generating normally distributed random numbers

VERSION

This document describes version 0.002 of Bencher::Scenario::NormalRandom (from Perl distribution Bencher-Scenario-NormalRandom), released on 2018-09-03.

SYNOPSIS

To run benchmark with default option:

% bencher -m NormalRandom

To run module startup overhead benchmark:

% bencher --module-startup -m NormalRandom

For more options (dump scenario, list/include/exclude/add participants, list/include/exclude/add datasets, etc), see bencher or run bencher --help.

DESCRIPTION

Each participant generates 1000 random numbers that are normally distributed. If a module accepts a range, we use [0, 1]. If a module accepts distribution parameters mean and standard deviation, we use 0.5 and 0.25 respectively.

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.

Math::Random::GaussianRange

Math::Random::NormalDistribution 0.01

Math::Random::OO::Normal 0.22

BENCHMARK PARTICIPANTS

  • Math::Random::GaussianRange (perl_code)

    Code template:

    Math::Random::GaussianRange::generate_normal_range({min=>0, max=>1, n=>1000, round=>0})

  • Math::Random::NormalDistribution (perl_code)

    Code template:

    my $gen = Math::Random::NormalDistribution::rand_nd_generator(0.5, 0.25); [map {$gen->()} 1..1000]

  • Math::Random::OO::Normal (perl_code)

    Code template:

    my $oo = Math::Random::OO::Normal->new(0.5, 0.25); [map {$oo->next} 1..1000]

SAMPLE BENCHMARK RESULTS

Run on: perl: v5.26.1, CPU: Intel(R) Core(TM) M-5Y71 CPU @ 1.20GHz (2 cores), OS: GNU/Linux LinuxMint version 18.3, OS kernel: Linux version 4.10.0-38-generic.

Benchmark with default options (bencher -m NormalRandom):

#table1#
+----------------------------------+-----------+-----------+------------+---------+---------+
| participant                      | rate (/s) | time (ms) | vs_slowest |  errors | samples |
+----------------------------------+-----------+-----------+------------+---------+---------+
| Math::Random::OO::Normal         |       345 |     2.9   |       1    | 1.8e-06 |      20 |
| Math::Random::GaussianRange      |      1300 |     0.77  |       3.8  | 9.1e-07 |      20 |
| Math::Random::NormalDistribution |      2260 |     0.442 |       6.56 | 2.1e-07 |      20 |
+----------------------------------+-----------+-----------+------------+---------+---------+

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

#table2#
+----------------------------------+-----------+------------------------+------------+-----------+---------+
| participant                      | time (ms) | mod_overhead_time (ms) | vs_slowest |  errors   | samples |
+----------------------------------+-----------+------------------------+------------+-----------+---------+
| Math::Random::GaussianRange      |      34   |                   27.9 |        1   | 7.2e-05   |      20 |
| Math::Random::OO::Normal         |      22   |                   15.9 |        1.5 | 9.4e-05   |      20 |
| Math::Random::NormalDistribution |      10   |                    3.9 |        3   |   0.00012 |      20 |
| perl -e1 (baseline)              |       6.1 |                    0   |        5.5 | 5.6e-05   |      20 |
+----------------------------------+-----------+------------------------+------------+-----------+---------+

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

HOMEPAGE

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

SOURCE

Source repository is at https://github.com/perlancar/perl-Bencher-Scenario-NormalRandom.

BUGS

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

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) 2018 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.