$ perl llilthc.pl --threads=8 --maps=4 big{1,2,3}.txt | cksum
Tokyo Cabinet hash database - start
fixed string length=12, threads=8, maps=4
get properties   :     5.487 secs
pack properties  :     3.545 secs
sort packed data :     0.969 secs
write stdout     :     0.764 secs
total time       :    10.769 secs
    count lines  : 10545600
    count unique : 10367603
2956888413 93308427