NAME Bencher::Scenario::CallStack - Benchmark different methods to produce call stack VERSION This document describes version 0.001 of Bencher::Scenario::CallStack (from Perl distribution Bencher-Scenario-CallStack), released on 2019-04-14. SYNOPSIS To run benchmark with default option: % bencher -m CallStack To run module startup overhead benchmark: % bencher --module-startup -m CallStack 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. Devel::Caller::Util 0.042 Carp 1.42 BENCHMARK PARTICIPANTS * Devel::Caller::Util::callers (perl_code) Function call template: Devel::Caller::Util::callers() * Devel::Caller::Util::callers with-args (perl_code) Function call template: Devel::Caller::Util::callers(0, 1) * Carp::ret_backtrace (perl_code) Function call template: Carp::ret_backtrace() SAMPLE BENCHMARK RESULTS Run on: perl: *v5.26.1*, CPU: *Intel(R) Core(TM) M-5Y71 CPU @ 1.20GHz (2 cores)*, OS: *GNU/Linux LinuxMint version 18.3*, OS kernel: *Linux version 4.10.0-38-generic*. Benchmark with default options ("bencher -m CallStack"): #table1# +----------------------------------------+-----------+-----------+------------+---------+---------+ | participant | rate (/s) | time (μs) | vs_slowest | errors | samples | +----------------------------------------+-----------+-----------+------------+---------+---------+ | Carp::ret_backtrace | 2150 | 465 | 1 | 4.6e-07 | 22 | | Devel::Caller::Util::callers with-args | 18000 | 55 | 8.5 | 1e-07 | 22 | | Devel::Caller::Util::callers | 25700 | 39 | 11.9 | 1.3e-08 | 20 | +----------------------------------------+-----------+-----------+------------+---------+---------+ Benchmark module startup overhead ("bencher -m CallStack --module-startup"): #table2# +---------------------+-----------+------------------------+------------+---------+---------+ | participant | time (ms) | mod_overhead_time (ms) | vs_slowest | errors | samples | +---------------------+-----------+------------------------+------------+---------+---------+ | Carp | 9 | 4.1 | 1 | 1.2e-05 | 20 | | Devel::Caller::Util | 7.2 | 2.3 | 1.2 | 1.5e-05 | 20 | | perl -e1 (baseline) | 4.9 | 0 | 1.8 | 1.6e-05 | 22 | +---------------------+-----------+------------------------+------------+---------+---------+ 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) 2019 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.