Method, device, and computer equipment for improving write performance of solid-state storage devices

Abstract

The invention relates to method and device for improving the write performance of a solid state storage device and a computer device. The method comprises the steps of receiving a write request; judging whether read / write units in a current group of erase units are allocated or not; if yes, allocating a new group of erases units; updating a Meta template of a NAND (Not AND) controller; if no, directly going to the next step; allocating the read / write units in the current erase units; generating command descriptors; and submitting the command descriptors to the NAND controller to complete the write request. According to the method disclosed by the invention, when the new erasing units are allocated and user data are written, the Meta template of the NAND controller is updated and Meta information is not generated; the generated command descriptors are submitted to the NAND controller according to the command descriptors; the Meta information is generated by utilizing ASIC (Application Specific Integrated Circuit) logic; and therefore, the processing time of a write command is reduced and the write performance of the solid state storage device is improved.

Description

technical field [0001] The present invention relates to a solid-state hard disk, and more specifically refers to a method, a device and a computer device for improving the writing performance of a solid-state storage device. Background technique [0002] For the SSD system, the logical address and the physical address are not statically bound. Therefore, when the SSD writes user data into the NAND, it needs to store additional information so that the mapping relationship can be rebuilt during the system initialization phase. This additionally stored information is called Meta information, and Meta information is usually generated by software in the SSD and stored in DRAM, which has a lower access speed. [0003] For the above-mentioned SSD system, the entire write request processing flow is as follows: the system receives a write request, and judges whether the read / write units in a group of erase units have been allocated, and if so, allocates a new group of erase units, an...

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Problems solved by technology

[0003] For the above-mentioned SSD system, the entire write request processing flow is as follows: the system receives a write request, and judges whether the read / write units in a group of erase units have been allocated, and if so, allocates a new group of erase units, and Allocate read-write units in the current erase unit, if not, directly allocate read-write units in the current erase unit, after allocating read-write units, generate Meta information and write request descriptors, and submit the descriptors to the NAND controller , waiting for the NAND controller to complete the write request, because the software generates Meta information is time-consuming, so in high-performance solid-state storage devices, this will become a write performance bottleneck

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