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Bencher-Scenarios-ParamsSah-0.002
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NAME

Bencher::Scenario::ParamsSah::Compile - Measure compilation speed

VERSION

This document describes version 0.002 of Bencher::Scenario::ParamsSah::Compile (from Perl distribution Bencher-Scenarios-ParamsSah), released on 2020-05-10.

SYNOPSIS

To run benchmark with default option:

% bencher -m ParamsSah::Compile

To run module startup overhead benchmark:

% bencher --module-startup -m ParamsSah::Compile

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.

Params::Sah 0.072

Type::Params 1.004004

Params::ValidationCompiler 0.30

BENCHMARK PARTICIPANTS

  • Params::Sah+Data::Sah (perl_code)

    Function call template:

    Params::Sah::gen_validator("int*", ["array*",of=>"int*"])

  • Params::Sah+Data::Sah::Tiny (perl_code)

    Function call template:

    Params::Sah::gen_validator({backend=>"Data::Sah::Tiny"}, "int*", ["array*",of=>"int*"])

  • Type::Params (perl_code)

    Code template:

    use Type::Params qw(compile); use Types::Standard qw(Int ArrayRef); compile(Int, ArrayRef[Int])

  • Params::ValidationCompiler (perl_code)

    Code template:

    use Params::ValidationCompiler qw(validation_for); use Types::Standard qw(Int ArrayRef); validation_for(params => [{type=>Int}, {type=>ArrayRef[Int]}])

SAMPLE BENCHMARK RESULTS

Run on: perl: v5.30.0, CPU: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz (2 cores), OS: GNU/Linux Ubuntu version 19.10, OS kernel: Linux version 5.3.0-46-generic.

Benchmark with default options (bencher -m ParamsSah::Compile):

#table1#
+-----------------------------+-----------+-----------+-----------------------+-----------------------+---------+---------+
| participant                 | rate (/s) | time (ms) | pct_faster_vs_slowest | pct_slower_vs_fastest |  errors | samples |
+-----------------------------+-----------+-----------+-----------------------+-----------------------+---------+---------+
| Params::Sah+Data::Sah       |       460 |     2.2   |                 0.00% |               948.76% | 7.7e-06 |      20 |
| Params::ValidationCompiler  |      3200 |     0.31  |               598.08% |                50.23% | 8.3e-07 |      21 |
| Params::Sah+Data::Sah::Tiny |      4370 |     0.229 |               843.02% |                11.21% | 2.1e-07 |      20 |
| Type::Params                |      4900 |     0.21  |               948.76% |                 0.00% | 4.2e-07 |      21 |
+-----------------------------+-----------+-----------+-----------------------+-----------------------+---------+---------+

Benchmark module startup overhead (bencher -m ParamsSah::Compile --module-startup):

#table2#
+----------------------------+-----------+-------------------+-----------------------+-----------------------+---------+---------+
| participant                | time (ms) | mod_overhead_time | pct_faster_vs_slowest | pct_slower_vs_fastest |  errors | samples |
+----------------------------+-----------+-------------------+-----------------------+-----------------------+---------+---------+
| Type::Params               |      41   |              33.8 |                 0.00% |               476.05% | 4.3e-05 |      20 |
| Params::ValidationCompiler |      30   |              22.8 |                37.86% |               317.85% | 3.1e-05 |      20 |
| Params::Sah                |      11   |               3.8 |               273.42% |                54.26% | 1.5e-05 |      20 |
| perl -e1 (baseline)        |       7.2 |               0   |               476.05% |                 0.00% | 1.6e-05 |      20 |
+----------------------------+-----------+-------------------+-----------------------+-----------------------+---------+---------+

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

BENCHMARK NOTES

Compilation of Sah schemas by Data::Sah (which is used by Params::Sah) is slower due to doing more stuffs like normalizing schema and other preparations. If needed, future version of Params::Sah or Data::Sah can cache compilation result particularly for commonly encountered simple schemas like 'int', ['array*', of=>'str*'], etc.

HOMEPAGE

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

SOURCE

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

BUGS

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

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) 2020 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.