$ ./makev.pl 10000 > test.10k.v
$ time perl_5.8.8 -w testv.pl test.10k.v
LAST MODULE (Perl 5.008008): je0dhj
perl_5.8.8 -w testv.pl test.10k.v  0.01s user 0.01s system 0% cpu 11.352 total
$ time perl_5.30 -w testv.pl test.10k.v
LAST MODULE (Perl 5.030000): je0dhj
perl_5.30 -w testv.pl test.10k.v  0.01s user 0.02s system 0% cpu 26.291 total