Method and device for dispensing cache room and cache controller

Abstract

The present invention discloses a cache space distribution method, device and a cache controller. The present method includes the following operations: the cache space size needed by the present writing operation is confirmed and the cache space is allocated; the data is written into the allocated cache space. The cache controller includes cache application unit and cache management driving unit. The present invention improves cache space efficiency.

Description

technical field [0001] The invention relates to data storage technology, in particular to a method and device for allocating cache (Cache) space and a cache controller. Background technique [0002] With the rapid development of information technology, network storage control systems that can provide data storage services have emerged. FIG. 1 is a schematic structural diagram of a network storage control system. Referring to FIG. 1 , the network storage control system mainly includes a disk array for storing data and a host processor for performing read and write operations. In addition, since the operating frequency of the host processor is much higher than that of the disk array, in order to improve the efficiency of data reading and writing, the network storage control system also includes a cache controller whose operating frequency is between the host processor and the disk array. and Cache. [0003] FIG. 2 is a schematic diagram of space division of a Cache in the p...

AI Technical Summary

Problems solved by technology

And since 3 Cache particles can provide 6KB storage space, therefore, the space of 1 Cache particle will be surplus, forming 1KB Cache fragments

In this way, as shown in Figure 4, when there are a large number of data write operations in the network storage control system, there will often be a large number of Cache granule spaces remaining, forming a large number of Cache fragments, thereby greatly reducing the utilization of Cache space

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