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A method for improving sequential read performance of a solid state drive

A solid-state hard drive and sequential reading technology, which is applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve the problem of large mapping table size and achieve the effect of improving performance

Inactive Publication Date: 2019-01-25
SUZHOU VICTOR INFORMATION TEC CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This mapping management method makes the size of the mapping table very large, requiring a large off-chip

Method used

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  • A method for improving sequential read performance of a solid state drive
  • A method for improving sequential read performance of a solid state drive
  • A method for improving sequential read performance of a solid state drive

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0016] The specific implementation is carried out in the order of the technical points mentioned above.

[0017] In the sequential read scenario, the logical address LPA of the read request is continuous, and the magnitude of the read request is relatively large. The source address of the read data on the NandFlash is related to the writing allocation rules of these data figure 1 It is a schematic diagram of the write address allocation rule of continuous LPA, whi...

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Abstract

A method for improving sequential read performance of a solid state drive, is characterized in that the newly generated sequential read command judges whether the new sequential read command accords with the existing splicing unit before adding the splicing unit, if so, directly adds the splicing unit, if not, refreshes and executes the existing splicing unit, generates a new splicing unit, and adds the sequential read command to the new splicing unit. The method for improving the sequential read performance of the solid state disk is characterized in that a timeout triggering module is used;when a splicing unit exceeds a preset time and no new read command is added to the splicing unit, the existing splicing unit is refreshed and executed. Read operation of multiple commands in parallelis implemented, which effectively improves the read performance of SSD.

Description

technical field [0001] The invention relates to a solid-state hard disk control technology, in particular to a method for improving the sequential read performance of a solid-state hard disk. Background technique [0002] The SSD (Solid State Drives, solid state drive) controller is a device that connects the user's host and storage particles (such as NAND flash memory). One end of the SSD controller is connected to the host, and the other end is connected to the storage particles. The host interface protocol module of the interface protocol, and the storage particle interface protocol module conforming to the storage particle interface protocol is arranged at the end connected to the storage particle. Because the data transmission between the two interface protocol modules has a high speed [0003] Traditional page mapping performs logical address-to-physical address mapping management for each logical page (usually 4KB in size). After the host writes the command, it will...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0614G06F3/0638G06F3/0688G06F3/061G06F3/0659G06F3/0679
Inventor 不公告发明人
Owner SUZHOU VICTOR INFORMATION TEC CO LTD