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#!/usr/bin/env perl | |
use strict; | |
use warnings; | |
use v5.20; | |
use feature qw(signatures); | |
no warnings qw(experimental::signatures); | |
require Dumbbench; # use() causes breakage w/ perlcc. | |
my $bench = Dumbbench->new( | |
target_rel_precision => 0.005, # seek ~0.5% | |
initial_runs => 20, # the higher the more reliable | |
); | |
use constant MAX => 1_000_000; | |
$bench->add_instances( | |
Dumbbench::Instance::PerlSub->new( | |
name => 'sig', | |
code => sub { has_sig(1, 2) for 1..MAX; return }, | |
), | |
Dumbbench::Instance::PerlSub->new( | |
name => 'unroll', | |
code => sub { no_sig(1, 2) for 1..MAX; return }, | |
), | |
Dumbbench::Instance::PerlSub->new( | |
name => 'stack', | |
code => sub { no_unroll(1, 2) for 1..MAX; return }, | |
), | |
Dumbbench::Instance::PerlSub->new( | |
name => 'sig_add', | |
code => sub { has_sig_add(1, 2) for 1..MAX; return }, | |
), | |
Dumbbench::Instance::PerlSub->new( | |
name => 'unroll_add', | |
code => sub { no_sig_add(1, 2) for 1..MAX; return }, | |
), | |
Dumbbench::Instance::PerlSub->new( | |
name => 'stack_add', | |
code => sub { no_unroll_add(1, 2) for 1..MAX; return }, | |
), | |
); | |
$bench->run(); | |
$bench->report(); | |
sub has_sig_add ($foo, $bar) { | |
$foo + $bar; | |
} | |
sub no_sig_add { | |
my ($foo, $bar) = @_; | |
$foo + $bar; | |
} | |
sub no_unroll_add { | |
$_[0] + $_[1]; | |
} | |
sub has_sig ($foo, $bar) { | |
} | |
sub no_sig { | |
my ($foo, $bar) = @_; | |
} | |
sub no_unroll { | |
} | |
__END__ | |
## perl 5.28.0 | |
sig: Ran 24 iterations (4 outliers). | |
sig: Rounded run time per iteration: 2.7561e-01 +/- 1.1e-04 (0.0%) | |
unroll: Ran 23 iterations (3 outliers). | |
unroll: Rounded run time per iteration: 2.3930e-01 +/- 1.4e-04 (0.1%) | |
stack: Ran 23 iterations (2 outliers). | |
stack: Rounded run time per iteration: 1.17720e-01 +/- 7.3e-05 (0.1%) | |
sig_add: Ran 25 iterations (4 outliers). | |
sig_add: Rounded run time per iteration: 3.2155e-01 +/- 2.5e-04 (0.1%) | |
unroll_add: Ran 26 iterations (6 outliers). | |
unroll_add: Rounded run time per iteration: 2.8707e-01 +/- 1.2e-04 (0.0%) | |
stack_add: Ran 21 iterations (1 outliers). | |
stack_add: Rounded run time per iteration: 1.6839e-01 +/- 1.2e-04 (0.1%) |
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