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#!/usr/bin/env perl | |
use strict; | |
use warnings; | |
use Benchmark qw(cmpthese); | |
my $String = "ATGC" x 1000; | |
my @Genes = qw(A T G C); | |
my %Count; | |
cmpthese 50_000, { | |
"eval_tr" => sub { | |
for my $gene (@Genes) { | |
$Count{$gene} += eval "\$String =~ tr/$gene//"; | |
die $@ if $@; | |
} | |
}, | |
"match" => sub { | |
for my $gene (@Genes) { | |
$Count{$gene} += () = $String =~ /$gene/g; | |
} | |
}, | |
"unrolled_tr" => sub { | |
$Count{A} += $String =~ tr/A//; | |
$Count{T} += $String =~ tr/T//; | |
$Count{G} += $String =~ tr/G//; | |
$Count{C} += $String =~ tr/C//; | |
}, | |
"unrolled_match" => sub { | |
$Count{A} += () = $String =~ /A/g; | |
$Count{T} += () = $String =~ /T/g; | |
$Count{G} += () = $String =~ /G/g; | |
$Count{C} += () = $String =~ /C/g; | |
}, | |
}; | |
__END__ | |
Rate unrolled_match match eval_tr unrolled_tr | |
unrolled_match 422/s -- -4% -96% -98% | |
match 440/s 4% -- -96% -98% | |
eval_tr 10204/s 2316% 2220% -- -57% | |
unrolled_tr 23697/s 5511% 5287% 132% -- |
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