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  2. Cache hierarchy - Wikipedia

    en.wikipedia.org/wiki/Cache_hierarchy

    Cache hierarchy, or multi-level cache, is a memory architecture that uses a hierarchy of memory stores based on varying access speeds to cache data. Highly requested data is cached in high-speed access memory stores, allowing swifter access by central processing unit (CPU) cores.

  3. CPU cache - Wikipedia

    en.wikipedia.org/wiki/CPU_cache

    The L2 cache, and higher-level caches, may be shared between the cores. L4 cache is currently uncommon, and is generally dynamic random-access memory (DRAM) on a separate die or chip, rather than static random-access memory (SRAM). An exception to this is when eDRAM is used for all levels of cache, down to L1. Historically L1 was also on a ...

  4. Cache inclusion policy - Wikipedia

    en.wikipedia.org/wiki/Cache_Inclusion_Policy

    Multi-level caches can be designed in various ways depending on whether the content of one cache is present in other levels of caches. If all blocks in the higher level cache are also present in the lower level cache, then the lower level cache is said to be inclusive of the higher level cache.

  5. Cache performance measurement and metric - Wikipedia

    en.wikipedia.org/wiki/Cache_performance...

    Processor performance increase due to cache hierarchy depends on the number of accesses to the cache that satisfy block requests from the cache (cache hits) versus those that do not. Unsuccessful attempts to read or write data from the cache (cache misses) result in lower level or main memory access, which increases latency.

  6. Cache placement policies - Wikipedia

    en.wikipedia.org/wiki/Cache_placement_policies

    The tag bits are compared with the tags of all cache lines present in selected set. If the tag matches any of the cache lines, it is a cache hit and the appropriate line is returned. If the tag does not match any of the lines, then it is a cache miss and the data is requested from next level in the memory hierarchy.

  7. Memory hierarchy - Wikipedia

    en.wikipedia.org/wiki/Memory_hierarchy

    Terms for data being missing from a higher level and needing to be fetched from a lower level are, respectively: register spilling (due to register pressure: register to cache), cache miss (cache to main memory), and (hard) page fault (main memory to disk).

  8. Power law of cache misses - Wikipedia

    en.wikipedia.org/wiki/Power_law_of_cache_misses

    In a multilevel cache hierarchy, the miss pattern of the higher level cache becomes the re-reference pattern of the immediate lower level cache.Hartstein et al. [4] found that whereas the cache misses for lower levels do not follow a strict power law, as long as the lower level cache is considerably larger than the higher level cache, the miss rate function can be approximated to the power law.

  9. Cache (computing) - Wikipedia

    en.wikipedia.org/wiki/Cache_(computing)

    Unlike proxy servers, in ICN the cache is a network-level solution. Therefore, it has rapidly changing cache states and higher request arrival rates; moreover, smaller cache sizes impose different requirements on the content eviction policies. In particular, eviction policies for ICN should be fast and lightweight.