SYSTEM AND METHODS FOR CACHING A SMALL SIZE I/O TO IMPROVE CACHING DEVICE ENDURANCE

摘要

An apparatus comprising a memory and a controller. The memory may be configured to (i) implement a cache and (ii) store meta-data. The cache comprises one or more cache windows. Each of the one or more cache windows comprises a plurality of cache-lines configured to store information. Each of the cache-lines comprises a plurality of sub-cache lines. Each of the plurality of cache-lines and each of the plurality of sub-cache lines is associated with meta-data indicating one or more of a dirty state and an invalid state. The controller is connected to the memory and configured to (i) recognize sub-cache line boundaries and (ii) process the I/O requests in multiples of a size of said sub-cache lines to minimize cache-fills.

主权项

1. An apparatus comprising:
a memory configured to (i) implement a cache and (ii) store meta-data, said cache comprising one or more cache windows, each of said one or more cache windows comprising (i) a plurality of cache-lines configured to store information and (ii) each of said cache-lines comprises a plurality of sub-cache lines, wherein each of said plurality of cache-lines and each of said plurality of sub-cache lines is associated with meta-data indicating one or more of a dirty state and an invalid state; and a controller connected to said memory and configured to (i) recognize sub-cache line boundaries and (ii) perform processing of I/O requests in multiples of a size of said sub-cache lines to minimize cache-fills.