NAME
Bencher::Scenario::IPCSystemOptions - Measure the overhead of IPC::System::Options's system()over CORE::system()
VERSION
This document describes version 0.03 of Bencher::Scenario::IPCSystemOptions (from Perl distribution Bencher-Scenario-IPCSystemOptions), released on 2017-01-25.
SYNOPSIS
To run benchmark with default option:
% bencher -m IPCSystemOptions
To run module startup overhead benchmark:
% bencher --module-startup -m IPCSystemOptions
For more options (dump scenario, list/include/exclude/add participants, list/include/exclude/add datasets, etc), see bencher or run bencher --help.
DESCRIPTION
Conclusion: Testing on my system (IPC::System::Options 0.24, perl: 5.22.0, CPU: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz (4 cores)) shows the overhead to be ~40μs (0.04ms) so for benchmarking commands that have overhead in the range of 10-100ms we normally don't need to worry about the overhead of IPC::System::Option (0.04-0.4%) when we are using default precision (~1%).
BENCHMARKED MODULES
Version numbers shown below are the versions used when running the sample benchmark.
IPC::System::Options 0.29
BENCHMARK PARTICIPANTS
core-true (perl_code)
iso-true (perl_code)
core-perl (perl_code)
iso-perl (perl_code)
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 17.3, OS kernel: Linux version 3.19.0-32-generic.
Benchmark with default options (bencher -m IPCSystemOptions):
#table1#+-------------+-----------+-----------+------------+---------+---------+| participant | rate (/s) |time(ms) | vs_slowest | errors | samples |+-------------+-----------+-----------+------------+---------+---------+| iso-perl | 176 | 5.67 | 1 | 5.5e-06 | 219 || core-perl | 177 | 5.64 | 1.01 | 5.5e-06 | 178 || iso-true | 222 | 4.5 | 1.26 | 4.4e-06 | 1821 || core-true | 231 | 4.32 | 1.31 | 4.2e-06 | 1894 |+-------------+-----------+-----------+------------+---------+---------+
Benchmark module startup overhead (bencher -m IPCSystemOptions --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 |+----------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+| IPC::System::Options | 1.25 | 4.52 | 16.4 | 11.9 | 6.03 | 1 | 1.2e-05 | 720 || perl -e1 (baseline) | 0.824 | 4.05 | 16 | 5.87 | 0 | 2.03 | 5.8e-06 | 246 |+----------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+
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-IPCSystemOptions.
SOURCE
Source repository is at https://github.com/perlancar/perl-Bencher-Scenario-IPCSystemOptions.
BUGS
Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Bencher-Scenario-IPCSystemOptions
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.