A ssd performance acceleration method

Abstract

The invention discloses an SSD performance acceleration method. When writing, a "pattern recognition" module is introduced, and the writing of all 0 user data is converted into writing of a mapping table, thereby greatly reducing the writing amplification. In the process of reading, a read buffer with all 0s is pre-formatted in the memory. When the host reads the data previously written with all 0s, it can be known that it is no-map by querying the mapping table, so the data is returned to the host directly from the formatted read buffer. Since there is no need to load data from NAND, the response delay of this 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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