Dai Okabayashi

NAME

Benchmarks - The comparison benchmarker

SYNOPSIS

    use Benchmarks sub {
        my $x = 2;
        +{
            times => sub { $x * $x * $x * $x },
            raise => sub { $x ** 4 },
        };
    };

DESCRIPTION

Benchmarks is the Benchamark wrapper for comparing routines easily.

When this module was loaded, all you need to do is pass the CODE reference that returns the hash reference.

    use Benchmarks sub {
        +{
            'routine_name_1' => sub { '... some code ...' },
            'routine_name_2' => sub { '... some code ...' },
        };
    };

Then the comparison will be invoked and show the result like below.

    Benchmark: running raise, times for at least 1 CPU seconds...
         raise: -1 wallclock secs ( 1.07 usr +  0.00 sys =  1.07 CPU) @ 8895180.37/s (n=9517843)
         times:  2 wallclock secs ( 1.10 usr +  0.00 sys =  1.10 CPU) @ 4051316.36/s (n=4456448)
               Rate times raise
    times 4051316/s    --  -54%
    raise 8895180/s  120%    --

PURE BENCHMARK

Benchmarks can show a pure benchmark(NOT to compare) like below.

    use Benchmarks sub {
        my $x = 2;
        sub { $x * $x * $x * $x }; # only one code
    };

then the result like this.

    timethis for 1:  1 wallclock secs ( 1.07 usr +  0.00 sys =  1.07 CPU) @ 4164904.67/s (n=4456448)

MORE FUNCTIONS

Benchmarks exports *ALL* functions from Benchmark. You can use Benchmarks module as same as Benchmark module.

    use Benchmarks;

    warn timestr(
        countit(1, sub { bless +{}, 'Foo' } )
    );

More information about functions: https://metacpan.org/pod/Benchmark#Standard-Exports and https://metacpan.org/pod/Benchmark#Optional-Exports

BENCHMARKS ARGS

When you use Benchmarks, you can throw several args like below.

    use Benchmarks sub {
        # benchmark hash or code.
    }, COUNT, STYLE, TITLE;

example STYLE:

    use Benchmarks sub {
        my $x = 2;
        +{
            times => sub { $x * $x },
            raise => sub { $x ** 2 },
        };
    }, 100, "none";

example STYLE and TITLE:

    use Benchmarks sub {
        my $x = 2;
        sub { $x * $x };
    }, 100, 'all', '2 times';

You can pass(return) these args at runtime.

    use Benchmarks sub {
        my $x = 2;
        sub { $x * $x }, 100, 'all', '2 times';
    };

BENCHMARK TEMPLATE

This module includes the penchmarks command. It's generator of the Benchmarks template.

    $ penchmarks GENERATE_BENCHMARK_FILE_PATH

Then you can edit the GENERATE_BENCHMARK_FILE_PATH file and run it.

REPOSITORY

Benchmarks is hosted on github http://github.com/bayashi/Benchmarks

Welcome your patches and issues :D

AUTHOR

Dai Okabayashi <bayashi@cpan.org>

SEE ALSO

Benchmark

LICENSE

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.