Bus Snooping: A
mechanism for maintaining CACHE COHERENCY in MULTIPROCESSOR computers,
under which each cpu's cache-control logic watches the external memory
bus, looking for reads or writes made by other processors (that is, it
'snoops' on their transactions). Whenever such a transaction is
detected, the cache logic enquires whether a copy of the target address
exists in its own cache, and if so either writes that line back to
memory or declares it invalid.
Chapter : Introduction to Computer
- Computer Fundamental
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