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 . SOURCE Source repository is at . BUGS Please report any bugs or feature requests on the bugtracker website 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 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.