> llil2m big1.txt big2.txt big3.txt >llil2m.tmp
llil2m start
get_properties     CPU  time : 4.187 secs
vector copy        CPU  time : 0.612 secs
vector sort        CPU  time : 2.89 secs
write  stdout      CPU  time : 1.383 secs
total              CPU  time : 9.074 secs
total             wall clock : 9 secs