ベンチマークをとる

こんばんは

Perl 6 Advent Calendar 2015の11日目です。(あとで書き直したい )

Perl6の処理のベンチマークを取るにはBenchモジュールを使います。

.timethis

1つの処理。

use v6;
use Bench;

my $繰り返し回数 = 1 #`(回) ;
my $bench = Bench.new;

$bench.timethis(
  $繰り返し回数,
  sub{ sleep 0.05; },
  title => 'hoge',
);

結果

      hoge: 0.0505 wallclock secs @ 19.8048/s (n=1)
        (warning: too few iterations for a reliable count)

.timethese

2つ(以上)の処理。

use v6;
use Bench;

my $繰り返し回数 = 1 #`(回) ;
my $bench = Bench.new;

$bench.timethese(
  $繰り返し回数,
  {
    first  => sub { sleep .05; },
    second => sub { sleep .005; },
  }
);

結果

Benchmark:
Timing 1 iterations of first, second...
     first: 0.0553 wallclock secs @ 18.0730/s (n=1)
        (warning: too few iterations for a reliable count)
    second: 0.0063 wallclock secs @ 157.8728/s (n=1)
        (warning: too few iterations for a reliable count)

.cmpthese

2つ(以上)の処理を比較して表を出力してくれます。

use v6;
use Bench;

my $繰り返し回数 = 1 #`(回) ;
my $bench = Bench.new;

$bench.cmpthese(
  $繰り返し回数,
  {
  :first( sub { sleep .05; } ),
  :second( sub { sleep .005; } ),
});

結果

Benchmark:
Timing 1 iterations of first, second...
     first: 0.0525 wallclock secs @ 19.0299/s (n=1)
        (warning: too few iterations for a reliable count)
    second: 0.0060 wallclock secs @ 167.6427/s (n=1)
        (warning: too few iterations for a reliable count)
O--------O--------O-------O--------O
|        | Rate   | first | second |
O========O========O=======O========O
| first  | 19.0/s | --    | -89%   |
| second | 168/s  | 781%  | --     |
------------------------------------

参考と参照

• tony-o/perl6-bench