Partitioned cache of multiple logical levels with adaptive reconfiguration based on multiple criteria

摘要

A system, computer program product and method for reallocating memory space for storing a partitioned cache. A server may be configured to receive requests to access a particular logical drive. One or more logical drives may be coupled to an adapter. A plurality of adapters may be coupled to the server. Each logical drive may be associated with one or more stacks where each stack may comprise one or more cache entries for storing information. The one or more stacks associated with a logical drive may be logically grouped into a logically grouped stack associated with that logical drive. Each of the logically grouped stacks of the one or more logical drives coupled to an adapter may be logically grouped into a logically grouped stack associated with that adapter. By logically grouping stacks, memory supporting a partitioned cache may adaptively be reallocated in response to multiple criteria thereby improving the performance of the cache.