cache line การใช้

• State E enables modifying a cache line with no bus transaction.
• Owned cache lines must respond to a snoop request with data.
• The " valid " state means that the cache line is current.
• Shared cache lines may not respond to a snoop request with data.
• Marked cache lines can be released from protection with the RELEASE instruction.
• These evictions occur because another request was mapped to the same cache line.
• A cache line contains a value, and it can be read or written.
• Writing on a cache line changes the value.
• Both caches are direct-mapped and have a 4-byte cache line.
• After a first MM access, all cache line data are available in cache.
• Consecutive cache line are placed in consecutive banks.
• Additionally, this store, as with all stores, clears the cache line reservation.
• The Coherency Granule size typically corresponds to the cache line size in a computer system.
• cache line by the  Placement Policy.
• In a cache implementation, the cache lines are generally augmented with read and write bits.
• The cache is divided into  n sets and each set contains  m cache lines.
• A write may only be performed if the cache line is in the Modified or Exclusive state.
• In this way, sequential pages in virtual memory do not contend for the same cache line.
• It has the advantage that it is not necessary to know the cache line size to implement it.
• The difference only matters if fetching a cache line from memory in critical-word-first order.