NAME

Bencher::Scenario::ShellGuess::Overhead - Benchmark the startup overhead of guessing shell

VERSION

This document describes version 0.002 of Bencher::Scenario::ShellGuess::Overhead (from Perl distribution Bencher-Scenarios-ShellGuess), released on 2017-01-25.

SYNOPSIS

To run benchmark with default option:

 % bencher -m ShellGuess::Overhead

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

  • load Shell::Guess (command)

  • load Shell::Guess + running_shell (command)

  • perl (baseline) (command)

SAMPLE BENCHMARK RESULTS

Run on: perl: v5.24.0, CPU: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz (4 cores), OS: GNU/Linux Debian version 8.0, OS kernel: Linux version 3.16.0-4-amd64.

Under bash:

 #table1#
 +-----------------------------------+-----------+-----------+------------+---------+---------+
 | participant                       | rate (/s) | time (ms) | vs_slowest |  errors | samples |
 +-----------------------------------+-----------+-----------+------------+---------+---------+
 | load Shell::Guess + running_shell |        98 |      10   |        1   | 3.8e-05 |      21 |
 | load Shell::Guess                 |       100 |       9.7 |        1.1 |   3e-05 |      20 |
 | perl (baseline)                   |       460 |       2.2 |        4.7 | 1.1e-05 |      20 |
 +-----------------------------------+-----------+-----------+------------+---------+---------+

Under fish:

 #table2#
 +-----------------------------------+-----------+-----------+------------+---------+---------+
 | participant                       | rate (/s) | time (ms) | vs_slowest |  errors | samples |
 +-----------------------------------+-----------+-----------+------------+---------+---------+
 | load Shell::Guess + running_shell |        99 |      10   |        1   | 4.6e-05 |      21 |
 | load Shell::Guess                 |       100 |       9.7 |        1   | 3.4e-05 |      20 |
 | perl (baseline)                   |       550 |       1.8 |        5.5 | 6.6e-06 |      21 |
 +-----------------------------------+-----------+-----------+------------+---------+---------+

Under tcsh ('c'):

 #table3#
 +-----------------------------------+-----------+-----------+------------+---------+---------+
 | participant                       | rate (/s) | time (ms) | vs_slowest |  errors | samples |
 +-----------------------------------+-----------+-----------+------------+---------+---------+
 | load Shell::Guess + running_shell |       100 |      10   |          1 | 4.6e-05 |      20 |
 | load Shell::Guess                 |       100 |       9.7 |          1 | 4.7e-05 |      20 |
 | perl (baseline)                   |       500 |       2   |          5 | 4.7e-05 |      20 |
 +-----------------------------------+-----------+-----------+------------+---------+---------+

Under zsh ('z'):

 #table4#
 +-----------------------------------+-----------+-----------+------------+-----------+---------+
 | participant                       | rate (/s) | time (ms) | vs_slowest |  errors   | samples |
 +-----------------------------------+-----------+-----------+------------+-----------+---------+
 | load Shell::Guess                 |       100 |        10 |          1 |   0.00011 |      20 |
 | load Shell::Guess + running_shell |        99 |        10 |          1 |   5e-05   |      20 |
 | perl (baseline)                   |       500 |         2 |          5 | 2.6e-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-Scenarios-ShellGuess.

SOURCE

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

BUGS

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

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.

SEE ALSO

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.