-review 共享数据块的跟踪:监听和目录 · Cache一致性协议实现:写作废和写更新 集中式共享存储 Cache一致性协议 Snooping协议:MS|,MESI,MOES Coherency misses ownership (note: the Exclusive state is not always considered an True Sharing Owned ownership state) validity False Sharing Modified Exclusive dirtiness exclusivity Shared Invalid 2021/2/1 计算机体系结构-review • 共享数据块的跟踪：监听和目录 • Cache一致性协议实现：写作废和写更新 • 集中式共享存储 Cache一致性协议 – Snooping协议：MSI，MESI，MOESI • Coherency Misses – True Sharing – False Sharing 2021/2/1 计算机体系结构 14