Cache management method and device for non-volatile storage device

Abstract

The embodiment of the invention discloses a cache management method and device of a non-volatile storage device, relates to the technical field of data processing, avoids frequent replacement of dirty pages, improves the working life of the storage device, reduces implementation costs, and improves execution efficiency. The embodiment of the present invention includes: judging the size relationship between the sum of the capacity of the clean page subpool and the dirty page subpool and the cache capacity; when the sum of the capacity of the clean page subpool and the dirty page subpool is greater than Or when it is equal to the cache capacity, judge whether the identification information of the page to be accessed is in the clean page history list or in the dirty page history list; when it is determined that the identification information of the page to be accessed is in the clean page history list, will The capacity threshold of the clean subpool is increased by a first adjustment value; when the identification information of the page to be accessed is in the dirty page history list, the capacity threshold of the clean subpool is decreased by a second adjustment value. The embodiment of the present invention is mainly applied in the cache management process of the non-volatile storage device.

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.

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