Write-in speed control method and device and medium

Abstract

The invention discloses a write-in speed control method and device and a medium, and is suitable for the technical field of solid state disks. Obtaining the writing speed of the current blank blocks and the block number of the current blank blocks; determining the depletion time of the current blank block according to the relationship between the current write-in speed and the block number of the current blank block; adjusting the current write-in speed according to the depletion time to obtain an updated write-in speed; and writing into the current blank block according to the updated writing speed. According to the method, the write-in speed is adjusted according to the length of the depletion time so as to maintain a proper number of blank blocks, and the risk that the write-in speed is adjusted according to the average recovery speed, so that the recovery speed of the subsequent recovery block is relatively low, the write-in speed is always maintained at the current relatively high speed, and the block is depleted is avoided. The writing speed is adjusted by monitoring the depletion time of the blank block, the application flexibility of the blank block is improved, and it is guaranteed that the block is not depleted.

Description

technical field [0001] The present invention relates to the technical field of solid-state hard disks, and in particular, to a method, device and medium for controlling writing speed. Background technique [0002] The characteristic of flash memory particles is that write commands are continuously written into blank blocks (Blocks), wherein blank blocks are blocks that have been erased or have not been written with any data. Before the full block is erased, valid data needs to be moved from the original full block to the blank block, and then the full block is erased to realize garbage collection. [0003] During garbage collection, it is necessary to detect the number of blank blocks and the speed of garbage collection to limit the write speed of the block. Under normal circumstances, whenever a certain number of blocks are recovered, the average recovery speed is obtained from the recovery time, which is then used as the writing speed. If a block recovery is completed in ...

AI Technical Summary

Problems solved by technology

Usually, whenever a certain number of blocks are reclaimed, the average recovery speed is obtained through the recovery time, and then used as the writing speed. If a block recovery is completed in a short time, the recovery speed is higher, and the writing speed will also increase , but when the recovery speed of the next block is low, its writing speed will maintain the previous high speed, resulting in too fast block consumption, which will cause the risk of block exhaustion

[0004] Therefore, it is an urgent need for those skilled in the art to seek a method of writing speed control and how to avoid excessive consumption of blocks.

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