Hello All,

I am a bit confused with the below benchmarks. I have read in multiple places, including a regex tutorial here, to avoid the /g modifier when it is not needed. This made sense to me in that it shouldn't have to continue searching once it has found a match, if the first match is what you're looking for.

The below metrics (in the code comments) don't seem to bare this out. Can anyone alleviate my confusion?

use Time::HiRes qw(sleep time);

my $time = time;
for (1..1_000_000)
{
   my $str = '123456789';
   my ($a,$b) = $str =~  m/(23)[^8]+(8)/g; # about 1.88 sec
   #my ($a,$b) = $str =~  m/(23)[^8]+(8)/; # about 2.15 sec
   #my ($a) = $str =~  m/(23)/g;           # about 1.23 sec
   #my ($a) = $str =~  m/(23)/;            # about 1.41 sec
}
say time - $time;

[download]

Edit: I'm running Strawberry 5.12.3

In reply to Why does global match run faster than none global? by Kc12349

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