Solid state disk garbage collection method and device, solid state disk and storage medium

A technology of solid-state hard disk and recycling method, which is applied in the direction of memory system, memory architecture access/allocation, memory address/allocation/relocation, etc., which can solve problems such as the impact of solid-state hard disk life and the reduction of working efficiency of solid-state hard disk, so as to reduce the total data The effect of reducing the amount, reducing the number of times, and improving work efficiency

Active Publication Date: 2019-11-26
SHENZHEN TIGO SEMICON
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Problems solved by technology

[0004] However, the writing method of the firmware (Firmware) algorithm has a great impact on the read and write efficiency of the entire SSD and the life of the SSD. If the operation of the firmware algorithm If the efficiency is low, the working efficiency of the entire solid-state drive will be reduced, and the life of the solid-state drive will also be affected

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  • Solid state disk garbage collection method and device, solid state disk and storage medium
  • Solid state disk garbage collection method and device, solid state disk and storage medium
  • Solid state disk garbage collection method and device, solid state disk and storage medium

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[0050] In order to make the purpose, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be described clearly and completely in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments These are a part of the embodiments of this application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0051] Such as figure 1 As shown, in one embodiment, a solid state hard disk garbage collection method is provided. Reference figure 1 , The solid state hard disk garbage collection method specifically includes the following steps:

[0052] Step S101: Determine the logical address of the valid data to be transported for each garbage collection, and accumulate the number ...

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Abstract

The invention relates to a solid state disk garbage collection method and device, a solid state disk and a storage medium. The solid state disk garbage collection method comprises the following steps:determining a logic address and accumulated carrying times of effective data to be carried in each time of garbage collection; if the carrying frequency is greater than a preset carrying frequency threshold, adding one to the disorder degree level, and resetting the carrying frequency; if any disorder degree level is greater than a preset disorder degree level threshold value, reducing each disorder degree level preset to be written into a disorder degree level record table in an equal proportion; dividing the logic address area into a plurality of groups; and for each group, when the data volume of the valid data reaches a preset data volume, writing the valid data in the group into the data block corresponding to the group. According to the embodiment of the invention, the garbage collection frequency can be effectively reduced, and the total data volume of garbage collection is reduced, and the operation efficiency of the NAND flash memory can be improved, and the working efficiency of the solid state disk can be further improved, and the service life of the solid state disk is prolonged.

Description

Technical field [0001] This application relates to the technical field of solid-state hard disks, and in particular to a solid-state hard disk garbage collection method, device, solid-state hard disk, and storage medium. Background technique [0002] Solid State Drive SSD (Solid State Drive) is a hard drive made of solid electronic memory chip array. SSD consists of a control unit and a storage unit NAND FLASH chip. [0003] The storage unit NAND FLASH chip is equipped with firmware, that is, "software solidified in the hardware", which is used to guide the solid state drive to work. The algorithms in the SSD firmware (FW) include: Mapping Table (Mapping Table), Garbage Collection (Garbage Collection), Wear Leveling (Wear Leveling, WL), etc. [0004] However, the writing method of the firmware algorithm has a great impact on the read and write efficiency of the entire solid state drive and the life of the solid state drive. If the operating efficiency of the firmware algorithm is l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02
CPCG06F12/0253G06F2212/7205
Inventor 李创锋陈柏轩
Owner SHENZHEN TIGO SEMICON
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