Here is what I mensure on my PPC:
use strict;
use warnings;
use Benchmark 'cmpthese';
cmpthese(
-2,
{
holli => sub {
$_ = "fox comes and fox goes into forest";
s/(fox.+)?(fox.+?forest)/${1}the $2/;
},
Roy => sub {
$_ = "fox comes and fox goes into forest";
s/(?=fox(?:(?!fox).)*forest)/the /;
},
ikegami => sub {
$_ = "fox comes and fox goes into forest";
s/(fox(?:(?!fox).)*forest)/the $1/;
},
borisz => sub {
$_ = reverse "fox comes and fox goes into forest";
s/(tserof.*?)xof/${1}xof eht/;
$_ = reverse;
}
}
);
__OUTPUT__
Rate holli ikegami Roy borisz
holli 62934/s -- -3% -25% -31%
ikegami 65121/s 3% -- -23% -29%
Roy 84099/s 34% 29% -- -8%
borisz 91530/s 45% 41% 9% --
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