Data read-write method and system of solid state disk

Abstract

The invention discloses a data read-write method and system for a solid state disk, and the method comprises the steps: continuously collecting and determining a capacity water line of the solid statedisk, and comparing the capacity water line with a safety threshold value; in response to the fact that the capacity water level line is continuously below the safety threshold, continuously collecting the read-write proportion and the read-write pressure input and output by the host within the learning time length and storing the read-write proportion and the read-write pressure locally; immediately ending the learning time and maximizing the speed of garbage collection writing in response to determining that the read-write pressure input and output by the host is zero in the learning time;and in response to the end of the learning time, controlling the speed of garbage collection writing based on the locally stored read-write ratio and read-write pressure. Read-write resource occupation can be controlled, and the processing speed and stability are improved.

Description

technical field [0001] The present invention relates to the field of data storage, more specifically, to a method and system for reading and writing data of a solid-state hard disk. Background technique [0002] In the era of big data, the amount of data storage has surged along with the development of new technologies such as 5G, artificial intelligence, big data, and blockchain, and there are higher requirements for data storage IOPS (reading and writing per second) and QOS (quality of service) , SSD will show its talents in this data revolution. In practical applications, SSDs need to be adapted to different workloads. Under different workloads, it is necessary to ensure not only IOPS and QOS, but also performance stability. NAND flash memory) bandwidth preemption is different, which in turn affects back-end garbage collection. [0003] There is currently no effective solution to the problem that SSD data mixed read and write resources occupy high resources and affect b...

AI Technical Summary

Problems solved by technology

In practical applications, SSDs need to be adapted to different workloads. Under different workloads, it is necessary to ensure not only IOPS and QOS, but also performance stability. NAND flash memory) bandwidth preemption is different, which in turn affects back-end garbage collection

[0003] There is currently no effective solution to the problem that SSD data mixed read and write resources occupy high resources and affect back-end garbage collection in the prior art.

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