NAME
    Bencher::Scenario::ListingProcesses - Benchmark listing OS processes

VERSION
    This document describes version 0.001 of
    Bencher::Scenario::ListingProcesses (from Perl distribution
    Bencher-Scenario-ListingProcesses), released on 2017-11-19.

SYNOPSIS
    To run benchmark with default option:

     % bencher -m ListingProcesses

    To run module startup overhead benchmark:

     % bencher --module-startup -m ListingProcesses

    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.

    Proc::ProcessTable 0.53

    Proc::ProcessTableLight 0.01

    Linux::Info::Processes 1.3

BENCHMARK PARTICIPANTS
    *   Proc::ProcessTable (perl_code)

        Code template:

         Proc::ProcessTable->new->table

    *   Proc::ProcessTable+cache_ttys (perl_code)

        Code template:

         Proc::ProcessTable->new(cache_ttys=>1)->table

    *   ps auwx (perl_code)

        Code template:

         `ps auwx`

    *   Proc::ProcessTableLight (perl_code)

        Function call template:

         Proc::ProcessTableLight::process_table()

    *   Linux::Info::Processes (perl_code)

        Code template:

         my $lip = Linux::Info::Processes->new; $lip->init; $lip->get

    *   Linux::Info::Processes+cache-init (perl_code)

        Code template:

         state $lip = do { my $lip = Linux::Info::Processes->new; $lip->init; $lip }; $lip->get

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 ListingProcesses"):

     #table1#
     +-----------------------------------+-----------+-----------+------------+-----------+---------+
     | participant                       | rate (/s) | time (ms) | vs_slowest |  errors   | samples |
     +-----------------------------------+-----------+-----------+------------+-----------+---------+
     | Linux::Info::Processes            |        10 |      70   |        1   |   0.00093 |      22 |
     | Linux::Info::Processes+cache-init |        14 |      69   |        1.1 |   0.00025 |      20 |
     | Proc::ProcessTableLight           |        65 |      15   |        4.8 | 8.1e-05   |      21 |
     | ps auwx                           |        80 |      13   |        5.9 | 5.8e-05   |      20 |
     | Proc::ProcessTable                |        85 |      12   |        6.3 | 2.1e-05   |      20 |
     | Proc::ProcessTable+cache_ttys     |       110 |       9.4 |        7.9 | 2.8e-05   |      20 |
     +-----------------------------------+-----------+-----------+------------+-----------+---------+

    Benchmark module startup overhead ("bencher -m ListingProcesses
    --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 |
     +-------------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+-----------+---------+
     | Proc::ProcessTable      | 3.2                          | 6.8                | 27             |      33   |                   27.1 |        1   |   0.00032 |      20 |
     | Linux::Info::Processes  | 0.92                         | 4.5                | 16             |      18   |                   12.1 |        1.9 | 5.8e-05   |      20 |
     | Proc::ProcessTableLight | 0.83                         | 4.2                | 16             |       7.7 |                    1.8 |        4.3 | 7.2e-05   |      20 |
     | perl -e1 (baseline)     | 3.2                          | 6.9                | 27             |       5.9 |                    0   |        5.7 | 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-Scenario-ListingProcesses>.

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

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

    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.

