SSD performance acceleration method

Abstract

The invention discloses an SSD performance acceleration method. During writing, a mode identification module is introduced; and by converting all-zero user data writing into mapping table writing, write amplification is greatly reduced. In a readout process, an all-zero read buffer region is formatted in a memory in advance. When a host reads previous all-zero written data, the data is determinedas no-map data by querying a mapping table, so that the data is returned to the host directly from the formatted read buffer region. The data does not need to be loaded from NAND, so that a response delay of a command can be greatly improved.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a method for accelerating SSD performance. Background technique [0002] SSD (Solid State Drive) has been widely used in various occasions. With the improvement of PC performance requirements, the performance optimization of storage devices that affect performance bottlenecks has become a major technical breakthrough point in the industry. Among the current mainstream OED / ODM manufacturers, some test tools can simulate the typical application scenarios of customers and perform performance tests on disks. In these test sequences, some of their characteristics have strong requirements on command response delay and service time. How to perform targeted optimization is a key measure to improve product performance. [0003] figure 1 It is a typical SSD read response processing flow; the host submits read commands to the front-end module of the SSD; the SSD front-end module divides ...

AI Technical Summary

Problems solved by technology

From the perspective of the entire process above, from receiving the host command to actually initiating data transmission, there are many links that need to go through in the middle, and the response delay of the command and the service time are very long.

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