NAME

Bencher::Scenario::MathBigFloat::Divide - Benchmark dividing 2^32 32 times to get 1

VERSION

This document describes version 0.001 of Bencher::Scenario::MathBigFloat::Divide (from Perl distribution Bencher-Scenarios-MathBigFloat), released on 2017-12-09.

SYNOPSIS

To run benchmark with default option:

 % bencher -m MathBigFloat::Divide

To run module startup overhead benchmark:

 % bencher --module-startup -m MathBigFloat::Divide

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.

Math::BigFloat 1.999808

BENCHMARK PARTICIPANTS

  • Math::BigFloat (perl_code)

    Code template:

     my $n = Math::BigFloat->new("4294967296"); my $m = Math::BigFloat->new("2"); for (1..32) { $n->bdiv($m) } $n->bstr
  • native (perl_code)

    Code template:

     my $n = 4294967296; for (1..32) { $n /= 2 } $n

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 18.2, OS kernel: Linux version 4.8.0-53-generic.

Benchmark with default options (bencher -m MathBigFloat::Divide):

 #table1#
 +----------------+-----------+-----------+------------+---------+---------+
 | participant    | rate (/s) | time (ms) | vs_slowest |  errors | samples |
 +----------------+-----------+-----------+------------+---------+---------+
 | Math::BigFloat |       330 |    3.1    |          1 |   1e-05 |      20 |
 | native         |    390000 |    0.0026 |       1200 | 3.3e-09 |      20 |
 +----------------+-----------+-----------+------------+---------+---------+

Benchmark module startup overhead (bencher -m MathBigFloat::Divide --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 |
 +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+----------+---------+
 | Math::BigFloat      | 0.8                          | 4                  | 20             |      80   |                   71.9 |          1 |   0.0021 |      20 |
 | perl -e1 (baseline) | 6.3                          | 9.9                | 22             |       8.1 |                    0   |         11 | 2.4e-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-Scenarios-MathBigFloat.

SOURCE

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

BUGS

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

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.