$ time perl serial.pl >/dev/null real 0m5.957s user 0m5.851s sys 0m0.099s $ time perl mce_map.pl >/dev/null real 0m2.468s user 0m9.015s sys 0m0.596s $ time perl mce_relay.pl >/dev/null real 0m1.988s user 0m7.067s sys 0m0.507s