NAME

Bencher::Scenario::Sprintf - Measure sprintf() performance

VERSION

This document describes version 0.01 of Bencher::Scenario::Sprintf (from Perl distribution Bencher-Scenario-Sprintf), released on 2016-01-10.

SYNOPSIS

To run benchmark with default option:

 % bencher -m Sprintf

For more options (dump scenario, list/include/exclude/add participants, list/include/exclude/add datasets, etc), see bencher or run bencher --help.

BENCHMARK PARTICIPANTS

  • 1k-concat2 (perl_code)

    Concatenating 2 strings together using ".".

    Code template:

     my $val; for (1..1000) { $val = <s1>.<s2> } $val
  • 1k-concat5 (perl_code)

    Concatenating 5 strings together using ".".

    Code template:

     my $val; for (1..1000) { $val = <s1>.<s2>.<s3>.<s4>.<s5> } $val
  • 1k-concat10 (perl_code)

    Concatenating 10 strings together using ".".

    Code template:

     my $val; for (1..1000) { $val = <s1>.<s2>.<s3>.<s4>.<s5>.<s6>.<s7>.<s8>.<s9>.<s10> } $val
  • 1k-join2 (perl_code)

    Concatenating 2 strings together using join().

    Code template:

     my $val; for (1..1000) { $val = join("",<s1>,<s2>) } $val
  • 1k-join5 (perl_code)

    Concatenating 5 strings together using join().

    Code template:

     my $val; for (1..1000) { $val = join("",<s1>,<s2>,<s3>,<s4>,<s5>) } $val
  • 1k-join10 (perl_code)

    Concatenating 10 strings together using join().

    Code template:

     my $val; for (1..1000) { $val = join("",<s1>,<s2>,<s3>,<s4>,<s5>,<s6>,<s7>,<s8>,<s9>,<s10>) } $val
  • 1k-sprintf2 (perl_code)

    Concatenating 2 strings together using sprintf().

    Code template:

     my $val; for (1..1000) { $val = sprintf("%s%s", <s1>,<s2>) } $val
  • 1k-sprintf5 (perl_code)

    Concatenating 5 strings together using sprintf().

    Code template:

     my $val; for (1..1000) { $val = sprintf("%s%s%s%s%s", <s1>,<s2>,<s3>,<s4>,<s5>) } $val
  • 1k-sprintf10 (perl_code)

    Concatenating 10 strings together using sprinff().

    Code template:

     my $val; for (1..1000) { $val = sprintf("%s%s%s%s%s%s%s%s%s%s", <s1>,<s2>,<s3>,<s4>,<s5>,<s6>,<s7>,<s8>,<s9>,<s10>) } $val

SAMPLE BENCHMARK RESULTS

Run on: perl: v5.22.0, CPU: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz (4 cores), OS: GNU/Linux Debian version 8.0, OS kernel: Linux version 3.16.0-4-amd64.

Benchmark with default option:

 +-----+--------------------------------------------------+-----------+-----------+---------+---------+
 | seq | name                                             | rate      | time      | errors  | samples |
 +-----+--------------------------------------------------+-----------+-----------+---------+---------+
 | 23  | {dataset=>"100char",participant=>"1k-join10"}    | 1.82e+04  | 54.9μs    | 2.3e-08 | 26      |
 | 11  | {dataset=>"100char",participant=>"1k-concat10"}  | 1.82e+04  | 54.8μs    | 1.2e-07 | 23      |
 | 35  | {dataset=>"100char",participant=>"1k-sprintf10"} | 19344.5   | 51.6942μs | 0       | 26      |
 | 31  | {dataset=>"100char",participant=>"1k-sprintf5"}  | 2.133e+04 | 46.89μs   | 1.3e-08 | 20      |
 | 19  | {dataset=>"100char",participant=>"1k-join5"}     | 2.244e+04 | 44.56μs   | 1.1e-08 | 27      |
 | 7   | {dataset=>"100char",participant=>"1k-concat5"}   | 2.25e+04  | 44.5μs    | 4e-08   | 20      |
 | 3   | {dataset=>"100char",participant=>"1k-concat2"}   | 2.52e+04  | 39.7μs    | 4.8e-08 | 25      |
 | 15  | {dataset=>"100char",participant=>"1k-join2"}     | 2.54e+04  | 39.4μs    | 1.3e-08 | 22      |
 | 10  | {dataset=>"10char",participant=>"1k-concat10"}   | 2.55e+04  | 39.2μs    | 1.2e-07 | 21      |
 | 27  | {dataset=>"100char",participant=>"1k-sprintf2"}  | 2.557e+04 | 39.11μs   | 1.1e-08 | 29      |
 | 30  | {dataset=>"10char",participant=>"1k-sprintf5"}   | 25854.9   | 38.6773μs | 0       | 20      |
 | 18  | {dataset=>"10char",participant=>"1k-join5"}      | 2.59e+04  | 38.7μs    | 5.1e-08 | 22      |
 | 9   | {dataset=>"5char",participant=>"1k-concat10"}    | 2.625e+04 | 38.09μs   | 1.1e-08 | 30      |
 | 2   | {dataset=>"10char",participant=>"1k-concat2"}    | 2.63e+04  | 38μs      | 1.3e-08 | 20      |
 | 25  | {dataset=>"5char",participant=>"1k-sprintf2"}    | 26677.1   | 37.4854μs | 0       | 22      |
 | 14  | {dataset=>"10char",participant=>"1k-join2"}      | 2.67e+04  | 37.4μs    | 5.3e-08 | 20      |
 | 12  | {dataset=>"1char",participant=>"1k-join2"}       | 26898.2   | 37.1773μs | 0       | 24      |
 | 17  | {dataset=>"5char",participant=>"1k-join5"}       | 26958.6   | 37.0939μs | 4.6e-11 | 25      |
 | 16  | {dataset=>"1char",participant=>"1k-join5"}       | 2.7e+04   | 37.1μs    | 5.3e-08 | 20      |
 | 21  | {dataset=>"5char",participant=>"1k-join10"}      | 26995.6   | 37.0431μs | 0       | 31      |
 | 22  | {dataset=>"10char",participant=>"1k-join10"}     | 27008.8   | 37.025μs  | 0       | 29      |
 | 29  | {dataset=>"5char",participant=>"1k-sprintf5"}    | 2.7e+04   | 37μs      | 4.6e-08 | 27      |
 | 13  | {dataset=>"5char",participant=>"1k-join2"}       | 2.7e+04   | 37μs      | 1.1e-07 | 20      |
 | 34  | {dataset=>"10char",participant=>"1k-sprintf10"}  | 2.716e+04 | 36.82μs   | 1.1e-08 | 31      |
 | 32  | {dataset=>"1char",participant=>"1k-sprintf10"}   | 2.72e+04  | 36.8μs    | 1.3e-08 | 20      |
 | 33  | {dataset=>"5char",participant=>"1k-sprintf10"}   | 2.73e+04  | 36.7μs    | 5.3e-08 | 20      |
 | 28  | {dataset=>"1char",participant=>"1k-sprintf5"}    | 2.73e+04  | 36.6μs    | 5e-08   | 23      |
 | 6   | {dataset=>"10char",participant=>"1k-concat5"}    | 2.75e+04  | 36.3μs    | 3.4e-08 | 27      |
 | 26  | {dataset=>"10char",participant=>"1k-sprintf2"}   | 2.774e+04 | 36.05μs   | 1.1e-08 | 29      |
 | 24  | {dataset=>"1char",participant=>"1k-sprintf2"}    | 2.77e+04  | 36μs      | 1.2e-08 | 23      |
 | 5   | {dataset=>"5char",participant=>"1k-concat5"}     | 2.78e+04  | 36μs      | 1.3e-08 | 20      |
 | 8   | {dataset=>"1char",participant=>"1k-concat10"}    | 2.78e+04  | 36μs      | 5.1e-08 | 22      |
 | 0   | {dataset=>"1char",participant=>"1k-concat2"}     | 2.78e+04  | 36μs      | 5e-08   | 23      |
 | 20  | {dataset=>"1char",participant=>"1k-join10"}      | 2.78e+04  | 36μs      | 4.3e-08 | 31      |
 | 1   | {dataset=>"5char",participant=>"1k-concat2"}     | 2.78e+04  | 36μs      | 5.3e-08 | 20      |
 | 4   | {dataset=>"1char",participant=>"1k-concat5"}     | 2.78e+04  | 36μs      | 4.2e-08 | 32      |
 +-----+--------------------------------------------------+-----------+-----------+---------+---------+

DESCRIPTION

This casual benchmarking shows no significant difference between the two, which suggests the bottleneck is in another place (e.g. string memory allocation).

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Bencher-Scenario-Sprintf.

SOURCE

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

BUGS

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

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) 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.