NAME Bencher::Scenario::DigestMD5 - Benchmark Digest::MD5 against md5sum utility VERSION This document describes version 0.004 of Bencher::Scenario::DigestMD5 (from Perl distribution Bencher-Scenario-DigestMD5), released on 2017-07-10. SYNOPSIS To run benchmark with default option: % bencher -m DigestMD5 To run module startup overhead benchmark: % bencher --module-startup -m DigestMD5 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. Digest::MD5 2.55 BENCHMARK PARTICIPANTS * md5sum (perl_code) Code template: my $cmd = "md5sum ".String::ShellQuote::shell_quote(); my $res = `$cmd`; $res =~ s/\s.+//s; $res * Digest::MD5 (perl_code) Code template: my $ctx = Digest::MD5->new; open my $fh, "<", ; $ctx->addfile($fh); $ctx->hexdigest BENCHMARK DATASETS * 30M_file SAMPLE BENCHMARK RESULTS Run on: perl: *v5.26.0*, 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*. Benchmark with default options ("bencher -m DigestMD5"): #table1# +-------------+-----------+-----------+------------+---------+---------+ | participant | rate (/s) | time (ms) | vs_slowest | errors | samples | +-------------+-----------+-----------+------------+---------+---------+ | Digest::MD5 | 15 | 66.8 | 1 | 3.6e-05 | 6 | | md5sum | 15 | 66.7 | 1 | 2.6e-05 | 6 | +-------------+-----------+-----------+------------+---------+---------+ Benchmark module startup overhead ("bencher -m DigestMD5 --module-startup"): #table2# +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+ | participant | proc_private_dirty_size (kB) | proc_rss_size (MB) | proc_size (MB) | time (ms) | mod_overhead_time (ms) | vs_slowest | errors | samples | +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+ | Digest::MD5 | 1116 | 4.5 | 22 | 10 | 4.7 | 1 | 6e-05 | 7 | | perl -e1 (baseline) | 1056 | 4.5 | 20 | 5.3 | 0 | 1.9 | 5.3e-05 | 7 | +---------------------+------------------------------+--------------------+----------------+-----------+------------------------+------------+---------+---------+ To display as an interactive HTML table on a browser, you can add option "--format html+datatables". BENCHMARK NOTES Since they are both implemented in C, the speeds of both are roughly the same. 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, 2016 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.