Read method and device for sequential data page granularity discrete distribution

Abstract

The present application relates to a read method, device, computer equipment and storage medium of sequential data page granularity discrete distribution, wherein the method includes: writing sequential data according to channel priority principle and discrete distribution rule of page granularity; according to address conversion As a result, the sequential data read request is distributed to each channel; it is judged whether the request sequence in the channel is regular; the irregular request sequence in the channel is converted into a regular request sequence by a sequencer. The invention realizes that the sequential read performance of the solid state hard disk is effectively improved by using the Multi_Plane operation characteristic of the Nand Flash.

Description

technical field [0001] The invention relates to the technical field of solid-state hard disks, in particular to a reading method, device, computer equipment and storage medium for sequential data page granularity discrete distribution. Background technique [0002] At present, with the development of solid-state hard disk technology, in the solid-state hard disk composed of multiple dies, the principle of discrete distribution of sequential data in each die according to the page granularity can effectively utilize the concurrency characteristics between die and the data transmission function of the channel bus. [0003] In the traditional technology, the write cache in the firmware follows the above principle of discrete distribution of page granularity to cache the data to be written. When it is converted to the algorithm layer, due to factors such as bad blocks, irregular data hashes will be generated, which will lead to sequential reads. The request of each Plane in a cer...

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Problems solved by technology

[0003] In the traditional technology, the write cache in the firmware follows the above principle of discrete distribution of page granularity to cache the data to be written. When it is converted to the algorithm layer, due to factors such as bad blocks, irregular data hashes will be generated, which will lead to sequential reads. The request of each Plane in a certain period of time on the Die is uneven, which will lead to a decline in the sequential read performance of the SSD.

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