$ for l in `seq 1 9`; do echo -n $l:; bzip2 -$l < /usr/lib/perl5/vendor_perl/i386-linux/auto/Gtk2/Gtk2.so | wc -c; done
1:722606
2:710937
3:710646
4:716613
5:721837
6:725297
7:725107
8:729182
9:732951
$