Method and device for configurating cache and electronic equipment and data read-write equipment

Abstract

The invention embodiment discloses a method and a device for configurating cache and electronic equipment and data read-write equipment. The method comprises: acquiring the hard disk number in an independent RAID arithmetic system and the data bulk of read-and-write once; assigning the caching memory area in the independent RAID arithmetic system according to the cache magnitude in the independentRAID arithmetic system and the acquired hard disk number and the preset data bulk of read-and-write once. The invention dynamically assigns the memory area in the cache based on the hard disk numberand the preset data bulk of read-and-write once in the condition that the cache in the independent RAID is constant to make the arranged memory area in the cache provide adequate data depth corresponding to the hard disk number and the necessary read-and-write data bulk, thus improving the efficiency of the independent RAID to read and write data.

Description

technical field [0001] The invention relates to the field of information technology, in particular to a method and device for configuring a cache, an electronic device and a device for reading and writing data through the cache. Background technique [0002] RAID (Redundant Array of Independent Disks) is a virtual single large-capacity hard disk formed by combining multiple hard disks through the controller. Different algorithms improve the redundancy and fault tolerance of data in the hard disk. [0003] In the prior art, in order to save the consumption of CPU (central processing unit) resources, the access of data is completed by DMA (Direct Memory Address, direct memory access), which not only greatly improves the data transmission bandwidth of the DMA engine, but also improves the RAID engine The data bandwidth, thereby improving the efficiency of the system to read and write data. [0004] However, the inventor found a defect in the prior art during the process of im...

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Problems solved by technology

[0004] However, in the process of realizing the present invention, the inventors found that the defects in the prior art are: since the structure of the RAID engine is fixed, its computing bandwidth is also relatively fixed.

Once the bottleneck of data transmission is reached, the RAID engine will often work discontinuously, thereby affecting the working efficiency of the system.

Although the existing technology has also proposed some solutions to this, such as improving the efficiency of the system to read and write data by serially reading and writing data through the RAID engine and the DMA engine, this method cannot make the RAID engine and the DMA engine work at the same time , a serious waste of system bandwidth; so how to make the RAID engine and the DMA engine work at the same time, thereby improving the efficiency of the RAID computing system to read and write data has become a technical problem that those skilled in the art wish to solve

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