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overrun

   arriving faster than it can be consumed, esp. in serial line
   communications.  For example, at 9600 baud there is almost exactly
   one character per millisecond, so if a silo can hold only two
   characters and the machine takes longer than 2 msec to get to
   service the interrupt, at least one character will be lost.
   2. Also applied to non-serial-I/O communications.  "I forgot to
   pay my electric bill due to mail overrun."  "Sorry, I got four
   phone calls in 3 minutes last night and lost your message to
   overrun."  When thrashing at tasks, the next person to make a
   request might be told "Overrun!"  Compare firehose
   syndrome.  3. More loosely, may refer to a buffer overflow
   not necessarily related to processing time (as in overrun
   screw).