The invention discloses a DRAM cache management method and system based on temporal locality, and belongs to the technical field of computer cache. The system comprises a temporal locality monitoring module, a dynamic decision-making module and a dispatching management module; the temporal locality monitoring module is used for monitoring the temporal locality requested by a user, the probabilities of write back and filling are calculated according to the monitoring result, and the probabilities are submitted to the dispatching management module; the dynamic decision-making module dynamically determines whether or not the temporal locality management strategy is deployed by adopting a group duel method and taking a kernel as the unit, the problem that due to write back and filling filtration, the DRAM cache hit ratio is lowered is avoided, and the system performance is more stable; the dispatching management module manages requests which are written back and subjected to filling to DRAM cache according to the results of the monitoring module and the dynamic decision-making module. In the working process, a user layer is completely transparent, and meanwhile due to the fact that monitoring is not on a critical path requested to be accessed, almost no influence is caused to the system performance.

DRAM cache management method and system based on temporal locality

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DRAM cache management method and system based on temporal locality