$ perl llilsql.pl --threads=48 --maps=max in/biga* | cksum
Tie::Hash::DBD SQLite database - start
fixed string length=12, threads=48, maps=128
get properties   :    29.645 secs
pack properties  :     1.883 secs
sort packed data :     6.691 secs
write stdout     :     1.744 secs
total time       :    39.982 secs
    count lines  : 91395200
    count unique : 79120065
2005669956 712080585

$ perl llildbf.pl --threads=48 --maps=max in/biga* | cksum
DB_File B-tree database - start
fixed string length=12, threads=48, maps=128
get properties   :    24.957 secs
pack properties  :     1.969 secs
sort packed data :     6.717 secs
write stdout     :     1.783 secs
total time       :    35.443 secs
    count lines  : 91395200
    count unique : 79120065
2005669956 712080585

$ perl llilmma.pl --threads=48 --maps=max in/biga* | cksum
IPC::MMA shared memory hash - start
fixed string length=12, threads=48, maps=1024
get properties   :    28.063 secs
pack properties  :     1.575 secs
sort packed data :     6.662 secs
write stdout     :     1.778 secs
total time       :    38.101 secs
    count lines  : 91395200
    count unique : 79120065
2005669956 712080585

$ 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
pack properties  :     3.276 secs
sort packed data :     6.826 secs
write stdout     :     1.631 secs
total time       :    21.284 secs
    count lines  : 91395200
    count unique : 79120065
2005669956 712080585

$ perl llilkch.pl --threads=48 --maps=max in/biga* | cksum
Kyoto Cabinet hash database - start
fixed string length=12, threads=48, maps=128
get properties   :    10.114 secs
pack properties  :     2.488 secs
sort packed data :     6.863 secs
write stdout     :     1.540 secs
total time       :    21.024 secs
    count lines  : 91395200
    count unique : 79120065
2005669956 712080585