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- False_sharing abstract "In computer science, false sharing is a performance-degrading usage pattern that can arise in systems with distributed, coherent caches at the size of the smallest resource block managed by the caching mechanism. When a system participant attempts to periodically access data that will never be altered by another party, but that data shares a cache block with data that is altered, the caching protocol may force the first participant to reload the whole unit despite a lack of logical necessity. The caching system is unaware of activity within this block and forces the first participant to bear the caching system overhead required by true shared access of a resource.By far the most common usage of this term is in modern multiprocessor CPU caches, where memory is cached in lines of some small power of two word size (e.g., 64 aligned, contiguous bytes). If two processors operate on independent data in the same memory address region storable in a single line, the cache coherency mechanisms in the system may force the whole line across the bus or interconnect with every data write, forcing memory stalls in addition to wasting system bandwidth. False sharing is an inherent artifact of automatically synchronized cache protocols and can also exist in environments such as distributed file system or databases, but current prevalence is limited to RAM caches.".
- False_sharing wikiPageExternalLink false-sharing-hits-again.html.
- False_sharing wikiPageExternalLink know-thy-java-object-memory-layout.html.
- False_sharing wikiPageExternalLink bolosky.txt.
- False_sharing wikiPageExternalLink 217500206.
- False_sharing wikiPageID "17991250".
- False_sharing wikiPageLength "2990".
- False_sharing wikiPageOutDegree "15".
- False_sharing wikiPageRevisionID "649822760".
- False_sharing wikiPageWikiLink Bandwidth_(computing).
- False_sharing wikiPageWikiLink Bus_(computing).
- False_sharing wikiPageWikiLink Byte.
- False_sharing wikiPageWikiLink CPU_cache.
- False_sharing wikiPageWikiLink Cache_coherence.
- False_sharing wikiPageWikiLink Cache_coherency.
- False_sharing wikiPageWikiLink Cache_line.
- False_sharing wikiPageWikiLink Category:Cache_coherency.
- False_sharing wikiPageWikiLink Category:Computer_memory.
- False_sharing wikiPageWikiLink Computer_science.
- False_sharing wikiPageWikiLink Data_structure_alignment.
- False_sharing wikiPageWikiLink Memory_address.
- False_sharing wikiPageWikiLink Multiprocessing.
- False_sharing wikiPageWikiLink Multiprocessor.
- False_sharing wikiPageWikiLink Power_of_two.
- False_sharing wikiPageWikiLink Random-access_memory.
- False_sharing wikiPageWikiLink Random_access_memory.
- False_sharing wikiPageWikiLink Word_(computer_architecture).
- False_sharing wikiPageWikiLink Word_(data_type).
- False_sharing wikiPageWikiLinkText "false sharing".
- False_sharing hasPhotoCollection False_sharing.
- False_sharing wikiPageUsesTemplate Template:Unreferenced.
- False_sharing subject Category:Cache_coherency.
- False_sharing subject Category:Computer_memory.
- False_sharing hypernym Pattern.
- False_sharing type Article.
- False_sharing type Disease.
- False_sharing type Array.
- False_sharing type Article.
- False_sharing type Datum.
- False_sharing comment "In computer science, false sharing is a performance-degrading usage pattern that can arise in systems with distributed, coherent caches at the size of the smallest resource block managed by the caching mechanism. When a system participant attempts to periodically access data that will never be altered by another party, but that data shares a cache block with data that is altered, the caching protocol may force the first participant to reload the whole unit despite a lack of logical necessity.".
- False_sharing label "False sharing".
- False_sharing sameAs Uso_compartido_falso.
- False_sharing sameAs m.047nlc9.
- False_sharing sameAs Q5432732.
- False_sharing sameAs Q5432732.
- False_sharing wasDerivedFrom False_sharing?oldid=649822760.
- False_sharing isPrimaryTopicOf False_sharing.