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-Norm
    alRandom>

    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.

