/ 
Bencher-Scenarios-MathBigFloat-0.001
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/ Bencher::Scenario::MathBigFloat::Subtract

NAME

Bencher::Scenario::MathBigFloat::Subtract - Benchmark subtracting 0.5 from 50, 100 times

VERSION

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

SYNOPSIS

To run benchmark with default option:

% bencher -m MathBigFloat::Subtract

To run module startup overhead benchmark:

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

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("50"); my $m = Math::BigFloat->new("0.5"); for (1..100) { $n->bsub($m) } $n->bstr

  • native (perl_code)

    Code template:

    my $n = 50; for (1..100) { $n -= 0.5 } $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::Subtract):

#table1#
+----------------+-----------+-----------+------------+--------+---------+
| participant    | rate (/s) | time (ms) | vs_slowest | errors | samples |
+----------------+-----------+-----------+------------+--------+---------+
| Math::BigFloat |       190 |     5.2   |          1 |  6e-06 |      20 |
| native         |    100000 |     0.007 |        800 |  7e-08 |      20 |
+----------------+-----------+-----------+------------+--------+---------+

Benchmark module startup overhead (bencher -m MathBigFloat::Subtract --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   |   0.001 |      20 |
| perl -e1 (baseline) | 6.3                          | 10                 | 22             |       8.1 |                    0   |        9.2 | 1.7e-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.