raiph@hack:~$ time perl6 -e 'my $s; for 1..10000 {$s+=1/$_**2};say $s'
1.64483407184807

real    0m0.355s
user    0m0.316s
sys     0m0.036s

raiph@hack:~$ time perl -E 'my $s; for (1..10000) {$s+=1/$_**2};say $s'
1.64483407184807

real    0m0.007s
user    0m0.004s
sys     0m0.000s