Cache management method and device for nonvolatile memory device

Abstract

The embodiment of the invention discloses a cache management method and device for a nonvolatile memory device, and relates to the technical field of data processing. According to the cache management method and device for the nonvolatile memory device, frequent replacement of dirty pages is avoided, the service life of the memory device is prolonged, implementation cost is reduced, and the execution efficiency is improved. The cache management method comprises the steps that the relationship between the sum of the capacity of a clean page sub pool and a dirty sub pool and the cache capacity is judged; when the sum of the capacity of the clean page sub pool and the dirty sub pool is larger than or equal to the cache capacity, whether the identification information of a page to be visited is in the clean page history list or in the dirty page history list is judged; when the identification information of the page to be visited is judged to be in the clean page history list, one first adjusting value is added for the clean page sub pool capacity threshold value; when the identification information of the page to be visited is in the dirty page history list, one second adjusting value is subtracted from the clean sub tool threshold value. The cache management method and device for the nonvolatile memory device are mainly applied to the cache management process of nonvolatile memory devices.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of data processing, and in particular, to a cache management method and device for a non-volatile storage device. Background technique [0002] With the rapid development of semiconductor technology, the increase in access bandwidth of storage devices (such as hard disks, etc.) that use magnetic media to record information has been far behind the increase in processor processing speed. At the same time, various non-volatile storage technologies based on semiconductor technology, such as flash memory and other storage devices, are developing at a high speed, with continuous increase in capacity, continuous reduction in cost, and continuous improvement in cost performance. Under such a development trend, non-volatile storage devices based on semiconductors are gradually replacing traditional storage devices based on magnetic media and become the main storage devices. The current non-vola...

AI Technical Summary

Problems solved by technology

[0004] The cache design schemes for traditional storage devices are optimized around the core goal of improving the cache hit rate. When directly applied to the storage architecture using non-volatile storage devices, it will cause frequent replacement of dirty pages and lead to average reading and writing. Increased time delay, reduced equipment working life, etc.

However, applying a complex cost model to a storage architecture using non-volatile storage devices has high implementation costs and low execution efficiency.

Images