Home > Terms > English, UK (UE) > Snooping
Snooping
The most popular protocol for maintaining cache coherency is called snooping. Cache controllers monitor or snoop on the bus to determine whether or not the cache contains a copy of a shared block.
For reads, multiple copies can reside in the cache of different processors, but because the processors need the most recent copy, all processors must get new values after a write. See also cache, competitive-caching, false sharing, write-invalidate, write-update.
For writes, a processor must have exclusive access to write to cache. Writes to unshared blocks do not cause bus traffic. The consequence of a write to shared data is either to invalidate all other copies or to update the shared copies with the value being written. See also cache, competitive-caching, false sharing, write-invalidate, write-update.
- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Computer
- Category: Workstations
- Company: Sun
- Product:
- Acronym-Abbreviation:
Other Languages:
Member comments
Terms in the News
Featured Terms
Contributor
Featured blossaries
Browers Terms By Category
- Muscular(158)
- Brain(145)
- Human body(144)
- Developmental anatomy(72)
- Nervous system(57)
- Arteries(53)
Anatomy(873) Terms
- Software engineering(1411)
- Productivity software(925)
- Unicode standard(481)
- Workstations(445)
- Computer hardware(191)
- Desktop PC(183)
Computer(4168) Terms
- Misc restaurant(209)
- Culinary(115)
- Fine dining(63)
- Diners(23)
- Coffehouses(19)
- Cafeterias(12)
Restaurants(470) Terms
- Radiology equipment(1356)
- OBGYN equipment(397)
- Cardiac supplies(297)
- Clinical trials(199)
- Ultrasonic & optical equipment(61)
- Physical therapy equipment(42)
Medical devices(2427) Terms
- Manufactured fibers(1805)
- Fabric(212)
- Sewing(201)
- Fibers & stitching(53)