Data storage device and read-write performance optimization method and system thereof

Abstract

The invention discloses a read-write performance optimization method of a data storage device. The method comprise the steps that on the condition that the current total blank block number is smaller than a first preset threshold value and a first average erasing frequency is larger than a second average erasing frequency, screening processing is conducted on all current blank physical blocks, and the screened blank physical block is determined as a current static garbage collection block; screening processing is conducted on all current full user physical blocks in which user input data is fully stored by taking the erasing frequency as a screening basis, and the screened full user physical block is determined as a current physical block to be subjected to static collection; valid data in the current physical block to be subjected to static collection is written in the current static garbage collection block, and then emptying processing is conducted on the current physical block to be subjected to static collection. The method is beneficial for decreasing the write-in amplification rate of the data storage device, and the read-write performance of the data storage device is improved. In addition, the invention further discloses the data storage device and a read-write performance optimization system thereof.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a data storage device and a method and system for optimizing read and write performance thereof. Background technique [0002] Currently, with the development of the data storage industry, data storage devices have more and more capacities and types, providing data storage services for many application fields. [0003] In the current data storage devices such as solid-state disks, the data stored in physical blocks includes both data with high access frequency and data with low access frequency. This phenomenon exists in a large number of physical blocks in solid-state disks. The write amplification ratio of the solid-state disk is improved, thereby reducing the read-write performance of the solid-state disk. [0004] From the above, it can be seen that how to reduce the write amplification ratio of the data storage device is an urgent problem to be solved at present. Content...

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Problems solved by technology

[0003] In current data storage devices such as solid-state disks, the data stored in physical blocks includes both data with high access frequency and data with low access frequency. This phenomenon exists in a large number of physical blocks in solid-state disks, which greatly The write amplification ratio of the solid state disk is improved, thereby reducing the read and write performance of the solid state disk

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