Cache managing method, cache managing device and cache managing equipment

Abstract

The embodiment of the invention discloses a cache managing method, a cache managing device and caching managing equipment. The method disclosed by the embodiment of the invention comprises the following steps of recording the access information of accessed data blocks in a target logical unit in a time window, wherein the logical linear space of the target logical unit is divided into the data blocks in the same size; acquiring the access characteristics of the accessed data blocks in the time window according to the access information of the accessed data blocks in the target logical unit in the time window; acquiring the global access characteristics of the target logical unit in a time period according to the access characteristics of the at least partial accessed data blocks in the target logical unit in the time period, wherein the time period comprises at least one time window; caching and managing the data blocks in the target logical unit according to the access characteristics of the accessed data blocks and the global access characteristics of the target logical unit. According to the cache managing method, the cache managing device and the cache managing equipment, the eliminating efficiency of caches can be improved, and the hit rate of the caches is further increased.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular to a buffer management method, a buffer management device and a buffer management device. Background technique [0002] Cache memory (hereinafter referred to as cache) is a high-speed and small-capacity memory between the processor and the main memory to solve the problem of speed mismatch between high-speed and low-speed devices. It is widely used in storage systems, databases, web servers, processing Servers, file systems, disk systems, and more. [0003] In a secondary storage architecture, cache has higher performance than auxiliary storage but is more expensive at the same time. Cost-effective requirements limit the size of cache capacity. Therefore, it is necessary to effectively manage the limited cache space and improve the utilization of cache resources. Various cache elimination algorithms have emerged for this reason. [0004] However, in the prior art...

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Problems solved by technology

[0004] However, in the prior art, a single cache elimination algorithm is fixedly used, and the single cache elimination algorithm cannot well adapt to the change and diversity of service access patterns, resulting in a low cache hit rate

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