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overrun n.

1. [techspeak] Term for a frequent consequence of data

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).

The Jargon File, Version 4.2.2, 20 Aug 2000 · 第 1221 / 1941 题