NAME
    Bencher::Scenario::Shell::Startup - Benchmark startup overhead of
    various Unix shells

VERSION
    This document describes version 0.001 of
    Bencher::Scenario::Shell::Startup (from Perl distribution
    Bencher-Scenario-Shell-Startup), released on 2023-07-08.

SYNOPSIS
    To run benchmark with default option:

     % bencher -m Shell::Startup

    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.

BENCHMARK PARTICIPANTS
    *   bash (command)

        Command line:

         bash --noprofile --norc -c true

    *   dash (command)

        Command line:

         dash -c true

    *   csh (command)

        Command line:

         csh -f -c :

    *   tcsh (command)

        Command line:

         tcsh -f -c :

    *   zsh (command)

        Command line:

         zsh -f -c true

SAMPLE BENCHMARK RESULTS
    Run on: perl: *v5.34.0*, CPU: *Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz
    (2 cores)*, OS: *GNU/Linux Ubuntu version 20.04*, OS kernel: *Linux
    version 5.4.0-91-generic*.

    Benchmark with default options ("bencher -m Shell::Startup"):

     #table1#
     {dataset=>undef}
     +-------------+-----------+-----------+-----------------------+-----------------------+---------+---------+
     | participant | rate (/s) | time (ms) | pct_faster_vs_slowest | pct_slower_vs_fastest |  errors | samples |
     +-------------+-----------+-----------+-----------------------+-----------------------+---------+---------+
     | csh         |       123 |      8.1  |                 0.00% |                57.10% | 5.3e-06 |      20 |
     | tcsh        |       124 |      8.09 |                 0.10% |                56.95% | 8.1e-06 |      20 |
     | zsh         |       160 |      6.2  |                31.71% |                19.28% | 7.6e-06 |      20 |
     | bash        |       180 |      5.6  |                45.06% |                 8.31% | 1.2e-05 |      21 |
     | dash        |       190 |      5.2  |                57.10% |                 0.00% | 7.4e-06 |      20 |
     +-------------+-----------+-----------+-----------------------+-----------------------+---------+---------+

    Formatted as Benchmark.pm result:

             Rate  csh  tcsh   zsh  bash  dash 
      csh   123/s   --    0%  -23%  -30%  -35% 
      tcsh  124/s   0%    --  -23%  -30%  -35% 
      zsh   160/s  30%   30%    --   -9%  -16% 
      bash  180/s  44%   44%   10%    --   -7% 
      dash  190/s  55%   55%   19%    7%    -- 
 
     Legends:
       bash: participant=bash
       csh: participant=csh
       dash: participant=dash
       tcsh: participant=tcsh
       zsh: participant=zsh

    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-Shell-Startup>.

SOURCE
    Source repository is at
    <https://github.com/perlancar/perl-Bencher-Scenario-Shell-Startup>.

SEE ALSO
AUTHOR
    perlancar <perlancar@cpan.org>

CONTRIBUTING
    To contribute, you can send patches by email/via RT, or send pull
    requests on GitHub.

    Most of the time, you don't need to build the distribution yourself. You
    can simply modify the code, then test via:

     % prove -l

    If you want to build the distribution (e.g. to try to install it locally
    on your system), you can install Dist::Zilla,
    Dist::Zilla::PluginBundle::Author::PERLANCAR,
    Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two
    other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps
    required beyond that are considered a bug and can be reported to me.

COPYRIGHT AND LICENSE
    This software is copyright (c) 2023 by perlancar <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.

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

    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.

