NAME

Bencher::Scenario::MemoryInfo - Benchmark getting system memory information

VERSION

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

SYNOPSIS

To run benchmark with default option:

 % bencher -m MemoryInfo

To run module startup overhead benchmark:

 % bencher --module-startup -m MemoryInfo

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.

Sys::MemInfo 0.99

Linux::MemInfo 0.03

Linux::Info::MemStats 1.3

BENCHMARK PARTICIPANTS

• Sys::MemInfo::freemem (perl_code)

  Function call template:

   Sys::MemInfo::freemem()

• Linux::MemInfo::get_mem_info (perl_code)

  Function call template:

   Linux::MemInfo::get_mem_info()

• Linux::Info::MemStats (perl_code)

  Code template:

   my $lxs = Linux::Info::MemStats->new; $lxs->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 MemoryInfo):

 #table1#
 +------------------------------+-----------+-----------+------------+---------+---------+
 | participant                  | rate (/s) | time (μs) | vs_slowest |  errors | samples |
 +------------------------------+-----------+-----------+------------+---------+---------+
 | Linux::MemInfo::get_mem_info |     11000 |    90     |        1   | 1.1e-07 |      29 |
 | Linux::Info::MemStats        |     17000 |    58     |        1.5 | 1.2e-07 |      24 |
 | Sys::MemInfo::freemem        |   4426000 |     0.226 |      397.6 | 1.2e-11 |      22 |
 +------------------------------+-----------+-----------+------------+---------+---------+

Benchmark module startup overhead (bencher -m MemoryInfo --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 |
 +-----------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+
 | Linux::Info::MemStats | 0.82                         | 4.2                | 16             |      11   |                    5.8 |        1   | 4.4e-05 |      20 |
 | Sys::MemInfo          | 1                            | 4.6                | 16             |      11   |                    5.8 |        1   | 5.7e-05 |      20 |
 | Linux::MemInfo        | 1.3                          | 4.8                | 16             |       9.4 |                    4.2 |        1.1 | 5.4e-05 |      20 |
 | perl -e1 (baseline)   | 1.2                          | 4.7                | 18             |       5.2 |                    0   |        2.1 |   1e-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-MemoryInfo.

SOURCE

Source repository is at https://github.com/perlancar/perl-Bencher-Scenario-MemoryInfo.

BUGS

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

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.

cpanm Bencher::Scenario::MemoryInfo

perl -MCPAN -e shell
install Bencher::Scenario::MemoryInfo