Writing speed control method, system and device and readable storage medium

Abstract

The invention discloses a write-in speed control method. The writing speed of the host writing operation is prevented from occupying the writing speed of the garbage collection operation. Whether thewrite-in speed of the host should be reduced or not is judged based on the real-time residual storage space of the solid state disk. Enough residual write-in speed is ensured to be distributed to thegarbage collection operation in a manner of actively limiting write-in operation of the host. Therefore, the garbage collection operation maintains the residual storage space of the solid state disk at the normal write-in speed so as to prevent cliff type reduction of the write-in speed of the host caused by insufficient residual storage space, thereby better ensuring the consistency of the read-write performance of the solid state disk. The invention further discloses a writing speed control system and device and a computer readable storage medium which have the above beneficial effects.

Description

technical field [0001] The present application relates to the technical field of solid-state hard disk performance consistency, in particular to a writing speed control method, system, device and computer-readable storage medium. Background technique [0002] With the development and wide application of technologies such as the Internet, cloud computing, Internet of Things, and big data, massive amounts of data are generated all the time in human life, and these massive amounts of data need to be processed and stored. The performance of the storage system puts forward higher requirements. Solid-state drives are widely used because of their fast read and write speeds and low energy consumption. [0003] The current scenarios where solid-state drives are used are becoming more and more complex, and the requirements for solid-state drives are getting higher and higher. There are strict standards in terms of performance and stability. The most important aspect is the consistenc...

AI Technical Summary

Problems solved by technology

[0004] In the current SSD design, an important factor that affects the performance consistency of the SSD is that the firmware cannot balance the write operations from the host and the write operations that perform garbage collection. When the write speed of the host write operation is faster When , since the total writing speed of the solid-state hard disk is fixed, it will preempt part of the writing speed used to perform garbage collection operations, making the execution speed of garbage collection operations slower, and the reduction in the efficiency of garbage collection will lead to the availability of solid-state hard disks. The rapid decline in storage space will eventually cause the host's write operations to be forced to slow down due to insufficient available storage space, causing the host's write speed to drop precipitously in a very short period of time or even drop to zero in extreme cases

The occurrence of this phenomenon not only affects the SSD itself, but also has a great impact on the upper layer applications and operating systems.

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