Block combining method and block combining devices used for improving SSD (Solid State Drive) writing efficiency

Abstract

The invention provides a block combining method and block combining devices used for improving SSD (Solid State Drive) writing efficiency. A bad-block distribution situation of each bank in an SSD isobtained; a vblock data situation of each bank is obtained according to the bad-block distribution situation; and borrowing from a bank of more vblock data into a bank of lesser vblock data is carriedout according to the vblock data situation of each bank, and the bank of the lesser vblock data borrows blocks from the bank of the more vblock data. Technical problems that "in the prior art, each bank takes out a vblock to form mblk, and when multiple banks in certain mblk are vblocks borrowed from other banks, performance of multi-channel parallel writing cannot be fully exerted in writing data, and writing speed is impacted are solved, and technical effects that good blocks on each bank can be fully utilized, op can be improved, impacts of the combined blocks on writing performance can also be minimized, and the writing speed can be guaranteed are realized.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a block method and device for improving write efficiency of SSD. Background technique [0002] Nand flush is the core hardware of SSD, and its quality determines the design of firmware. Compared with 2D tlc-type Nand flush, 3D Nand flush particles are less stable and tend to produce more factory bad blocks. When the number of bad blocks in each bank differs greatly, it will affect the write performance and op size. In order to ensure high write performance of the SSD, each bank has writable blocks during the required write, which requires a bank with a small number of vblocks to borrow blocks from a bank with a large number of vblocks. [0003] However, in the process of realizing the technical solution of the invention in the embodiment of the present application, the inventor of the present application found that the above-mentioned technology has at least the follo...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a block method and device for improving SSD writing efficiency, which solves the problem that in the prior art, each bank takes out a vblock to form an mblk, when multiple banks in a certain mblk are from other banks When borrowing vblock, when writing data, the performance of multi-channel parallel writing cannot be fully utilized, which affects the technical problem of writing speed. It can make full use of good blocks on each bank, improve op, and minimize the combination of blocks The impact on writing performance, the technical effect of ensuring writing speed

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