Input-output request scheduling method, memory controller and memory array

Abstract

The embodiment of the invention discloses an input-output request scheduling method, a memory controller and a memory array. The method provided by the invention comprises the following steps of: receiving an input-output request sent by a host, wherein the input-output request carries target address information; calling the processing functions in a target device subclass according to the target address information, wherein the target device subclass is obtained by being succeeded from a preset basic class; calling the processing functions in a cache subclass according to the output result of the processing functions in the target device subclass, wherein the cache subclass is obtained by being succeeded from the preset basic class; calling the processing functions in an independent redundant disk array algorithm subclass according to the output result of the processing functions in the cache subclass, wherein the independent redundant disk array algorithm subclass is obtained by being succeeded from the preset basic subclass; and calling the processing functions in a disk subclass according to the output result of the processing functions in the independent redundant disk array algorithm subclass, wherein the disk subclass is obtained by being succeeded from the preset basic class. The input-output request scheduling method can enhance the properties of a memory system.

Description

technical field [0001] The invention relates to the technical field of storage, in particular to an input output (IO, Input Output) request scheduling method, a storage controller and a storage array. Background technique [0002] The core of the storage array is to ensure that data can be written or read efficiently to meet the needs of different applications. In an existing storage array, different modules are usually divided according to functions, and then boundaries and interfaces of each module are defined, and communication between modules is performed through the interface. [0003] see figure 1 , figure 1 It is a schematic diagram of a storage array structure in the prior art. [0004] Wherein, the functional modules in the storage array usually include target device (Target), cache (Cache) module, replication (Replication) module, snapshot (Snapshot) module, independent redundant disk array (RAID, Redundant Array Of Independent Disk) and disk and other modules,...

AI Technical Summary

Problems solved by technology

[0006] In the process of researching the existing technology, the inventor found that, due to the existence of independent threads among the modules, multiple context switches are required during the execution of the IO request, resulting in a longer response time for the IO request and affecting the performance of the storage array.

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