$ perl lliltch.pl --threads=48 --maps=max in/biga* | cksum
Tokyo Cabinet hash database - start
fixed string length=12, threads=48, maps=128
get properties   :     9.533 secs    9.587 mil QPS
pack properties  :     3.276 secs   24.151 mil QPS
sort packed data :     6.826 secs
write stdout     :     1.631 secs
total time       :    21.284 secs
    count lines  : 91395200
    count unique : 79120065
2005669956 712080585

$ NUM_THREADS=48 NUM_MAPS=128 ./llil4tkh in/biga* | cksum
llil4tkh (fixed string length=12) start
sharding managed by the tkrzw::ShardDBM library
use OpenMP
use boost sort
get properties         2.872 secs   31.823 mil QPS
shardDBM to vector     1.546 secs   51.177 mil QPS
vector stable sort     1.399 secs
write stdout           1.561 secs
total time             7.380 secs
2005669956 712080585