Method for improving multi-partition sequential read-write performance and system thereof

Abstract

The invention belongs to the technical field of storage and provides a method for improving multi-partition sequential read-write performance and a system thereof. The method comprises a step (A) of analyzing a master boot record of a solid state disk according to a file system partition protocol and establishing a partition information list of the solid state disk according to the master boot record; and a step (B) of performing separation and recombination on commands sent by a host end of the solid state disk according to the partition information list. Therefore, the method and the system reduce garbage block generation probability and improve the multi-partition sequential read-write performance of the solid state disk.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a method and system for improving sequential read and write performance of multiple partitions. Background technique [0002] When an SSD (Solid State Disk, solid state drive) is divided into multiple partitions, these partitions are read and written sequentially at the same time, and it is found that the performance drops sharply after long-term operation. From the analysis of data flow, although each partition is read and written sequentially, when these read and write requests converge in the SSD, they are already considered as random read and write, and the degree of randomness depends on the size of each read and write command. [0003] Such as figure 1 As shown, at present, when the firmware of the solid-state hard disk processes multi-partition read and write requests, it simply processes them in sequence according to the order of commands issued by the host. In this wa...

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Problems solved by technology

From the perspective of the host, the performance dropped sharply, and the sequential read and write did not meet the expected performance.

[0005] Therefore, from the perspective of NAND, with the passage of time, the data of each partition tends to be more and more discretely distributed, which leads to frequent data movement, increased write amplification, and affects the service life.

[0006] In summary, the existing multi-partition sequential read and write technology obviously has inconvenience and defects in actual use, so it is necessary to improve it

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