What happens when you move the print statements out from the time snapshots:

($secs_since_epoch_one, $microseconds_one) = gettimeofday();
($secs_since_epoch_two, $microseconds_two) = gettimeofday();

print "......
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Is the results closer to what you are looking for? could try to call the gettimeofday() from within the print statement and skip over most of the memory access.