I knocked up this random meaningless benchmark script: 
my $t;
for my $i (1..10_000_000) {
    if ($i % 3) {
        $t += $i;
    }
}

[download]
and ran it a few times on a threaded and non-threaded perl build (a recent bleedperl) and got average timings of 4.46s and 4.99s, so about 10% slower.

Dave.

In reply to Re^3: Perl threading stability? by dave_the_m
in thread Perl threading stability? by guice

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