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专利名称：Systems and methods for managing storage
location descriptors
发明人：John Kemeny,Naizhong Qui,Xueying Shen申请号：US10185814申请日：20020627公开号：US06701393B1公开日：20040302
专利附图：
摘要：A device (e.g., a secondary cache device) manages descriptors which correspondto storage locations (e.g., cache blocks). The device includes memory and a control circuitcoupled to the memory. The control circuit is configured to arrange the descriptors,
which correspond to the storage locations, into multiple queues within the memorybased on storage location access frequencies. The control circuit is further configured todetermine whether an expiration timer for the particular descriptor has expired inresponse to a particular descriptor reaching a head of a particular queue. The controlcircuit is further configured to move the particular descriptor from the head of theparticular queue to a different part of the multiple queues, wherein the different part isidentified based on access frequency when the expiration timer for the particulardescriptor has not expired, and not based on access frequency when the expiration timerfor the particular descriptor has expired.
申请人：EMC CORPORATION
代理机构：Chapin & Huang, L.L.C.
代理人：David E. Huang, Esq.
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