$ time ./wc.pl lesms10_big.txt
 14152200 113528600 652751200 lesms10_big.txt

real 0m0.536s  (3.98x)
user 0m3.570s
sys  0m0.591s

$ time ./wc.pl < lesms10_big.txt
 14152200 113528600 652751200

real 0m0.740s  (2.89x)
user 0m3.784s
sys  0m1.166s