backing store การใช้

• The latencies and throughputs for both the cache and the backing store.
• Now, requested memory is placed in some form of a backing store.
• These coherency states are maintained through communication between the caches and the backing store.
• When used, the data from the backing store is moved into main memory.
• A page that requires writing to backing store will be placed on the Modified Page List.
• Maneesh Soni later wrote the sysfs backing store patch to reduce memory usage on large systems.
• A cache can store data that is computed on demand rather than retrieved from a backing store.
• This was complemented by an additional 8192 words of backing store on magnetic drum ( 3000 rpm ).
• Additionally the porting effort required a number of new device drivers to support the newer backing store devices being used.
• This strategy requires that the backing store retain a copy of the page after it is paged in to memory.
• The pager system would handle mapping as it would always, copying data to and from the backing store as needed.
• Each entry has associated data, which is a copy of the same data in some " backing store ".
• When a system writes data to cache, it must at some point write that data to the backing store as well.
• When a dirty bit is used, at all times some pages will exist in both physical memory and the backing store.
• With covariant arrays this cannot be guaranteed to be safe, since the backing store might actually be an array of cats.
• Applications using Memcached typically layer requests and additions into RAM before falling back on a slower backing store, such as a database.
• The previously uncached data fetched from the backing store during miss handling is usually copied into the cache, ready for the next access.
• Backing store was magnetic drum and optionally one-inch-, half-inch-or quarter-inch-wide magnetic tape.
• Each entry also has a tag, which specifies the identity of the data in the backing store of which the entry is a copy.
• The Modified Page List additionally provides an opportunity to write pages out to backing store in groups of more than one page, increasing efficiency.