$ perl -E'for (10..20) { print "file $_: "; system "time perl logparser perlio $_" }'
file 10: 0.06user 0.00system 0:00.07elapsed 98%CPU (0avgtext+0avgdata 11480maxresident)k
0inputs+0outputs (0major+1298minor)pagefaults 0swaps
file 11: 0.09user 0.00system 0:00.10elapsed 100%CPU (0avgtext+0avgdata 12444maxresident)k
0inputs+0outputs (0major+1422minor)pagefaults 0swaps
file 12: 0.17user 0.00system 0:00.17elapsed 99%CPU (0avgtext+0avgdata 14264maxresident)k
0inputs+0outputs (0major+1662minor)pagefaults 0swaps
file 13: 0.28user 0.01system 0:00.29elapsed 99%CPU (0avgtext+0avgdata 17800maxresident)k
0inputs+0outputs (0major+1636minor)pagefaults 0swaps
file 14: 0.56user 0.00system 0:00.57elapsed 100%CPU (0avgtext+0avgdata 25432maxresident)k
0inputs+0outputs (0major+1582minor)pagefaults 0swaps
file 15: 1.03user 0.01system 0:01.05elapsed 99%CPU (0avgtext+0avgdata 39760maxresident)k
0inputs+0outputs (0major+3007minor)pagefaults 0swaps
file 16: 2.10user 0.02system 0:02.13elapsed 99%CPU (0avgtext+0avgdata 68880maxresident)k
0inputs+0outputs (0major+6871minor)pagefaults 0swaps
file 17: 4.25user 0.05system 0:04.31elapsed 99%CPU (0avgtext+0avgdata 127220maxresident)k
0inputs+0outputs (0major+14606minor)pagefaults 0swaps
file 18: 8.26user 0.09system 0:08.37elapsed 99%CPU (0avgtext+0avgdata 243520maxresident)k
0inputs+0outputs (0major+29051minor)pagefaults 0swaps
file 19: 16.27user 0.15system 0:16.43elapsed 99%CPU (0avgtext+0avgdata 476608maxresident)k
0inputs+0outputs (0major+59994minor)pagefaults 0swaps
file 20: 32.82user 0.22system 0:33.08elapsed 99%CPU (0avgtext+0avgdata 942436maxresident)k
0inputs+0outputs (0major+121878minor)pagefaults 0swaps