WO2023202288A1

WO2023202288A1 - Solid-state drive reading method, system and apparatus, and storage medium

Info

Publication number: WO2023202288A1
Application number: PCT/CN2023/082057
Authority: WO
Inventors: 邵文豪; 钟戟
Original assignee: 苏州浪潮智能科技有限公司
Priority date: 2022-04-22
Filing date: 2023-03-17
Publication date: 2023-10-26
Also published as: CN114546294B; CN114546294A

Abstract

The present application relates to solid-state drive task operation and discloses a solid-state drive reading method, system and apparatus, and a storage medium. The method comprises: initializing a rear-end module of a solid-state drive to determine a plurality of scheduling subjects, the total number of the scheduling subjects being greater than the total number of logical unit numbers in the solid-state drive; assigning a context to each of the scheduling subjects; and receiving a request message, so that each scheduling subject executes a corresponding concurrent scheduling task according to the corresponding request message, and transmits read data corresponding to the scheduling task to an information receiving end by means of a bus. The present application is used for executing a read task of a solid-state drive; scheduling subjects more than logical unit numbers in quantity are arranged in the present application, and then the scheduling subjects execute a concurrent scheduling task; due to the fact that the number of the scheduling subjects is larger, the speed of executing the concurrent scheduling task is higher than that of the original logical unit numbers, moreover, an idle bus can be effectively utilized to transmit read data, and the resource waste is reduced.

Description

Solid state hard drive reading method, system, device and storage medium

Cross-references to related applications

This application requires the priority of the Chinese patent application submitted to the China Patent Office on April 22, 2022, with the application number 202210424658. This reference is incorporated into this application.

Technical field

This application relates to the field of solid-state hard disk task operation, and in particular to a solid-state hard disk reading method, a corresponding solid-state hard disk reading system, a corresponding solid-state hard disk reading device, and a corresponding computer non-volatile readable storage medium .

Background technique

In the era of big data, the importance of data storage is becoming more and more obvious. While the computing speed of components such as the CPU (Central Processing Unit, Central Processing Unit) is getting higher and higher, the storage and reading rate of data has always been the bottleneck of the system's operating speed.

Different from traditional hard drives, the flash memory particles NAND (NOT AND, meaning NOT AND (and non), related to the architecture of FLAHS) in the storage unit of the solid state drive are grouped into channels as units, and each channel has a controller. The operations of each channel on NAND can be performed in parallel, and each channel does not affect each other. At the same time, the same channel controls the operations of multiple logical unit numbers (Logical Unit Number, LUN) concurrently, and each LUN performs its own operation tasks. , but all LUNs share a bus, and all LUNs will output data serially through the bus.

However, with the development of technology, the capacity of block data blocks in each LUN is getting larger and larger, and at the same time, the number of blocks in each LUN is also increasing. When the total capacity of the solid-state drive remains unchanged, the number and capacity of blocks The increase will lead to fewer and fewer parallel LUNs in each channel, and fewer and fewer execution subjects of read tasks in each channel, resulting in a reduction in read efficiency. At the same time, the data bus will be idle and resources will appear. The problem of waste.

Contents of the invention

In view of this, the purpose of this application is to provide a solid-state hard disk reading method, a corresponding solid-state hard disk reading system, a corresponding solid-state hard disk reading device, and a corresponding computer non-volatile readable storage medium. to improve reading efficiency. The specific plan is as follows:

A solid-state disk reading method includes:

Initialize the back-end module of the solid-state drive to determine multiple scheduling subjects. The total number of scheduling subjects is greater than that of the solid-state drive. The total number of logical unit numbers in the hard disk;

Assign context to each scheduling subject separately;

Receive the request message so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to the information receiving end through the bus.

In some embodiments of the present application, each scheduling subject corresponds to several planes in the solid state drive.

In some embodiments of the present application, each scheduling subject corresponds to a plane.

In some embodiments of the present application, the process of receiving a request message so that each scheduling subject executes a corresponding concurrent scheduling task according to the corresponding request message and transmits the read data corresponding to the scheduling task to the information receiving end through the bus includes:

Receive the request message located to the corresponding scheduling subject, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to the information receiving end through the bus.

In some embodiments of the present application, a request message located to the corresponding scheduling subject is received, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task through the bus to The process at the information receiving end includes:

Receive the request message sent by FTL and located to the corresponding scheduling subject, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to the information receiving end through the bus.

In some embodiments of the present application, the total number of scheduling subjects is the same as the total number of contexts.

In some embodiments of the present application, the process of each scheduling subject executing a corresponding concurrent scheduling task according to the corresponding request message and transmitting the read data corresponding to the scheduling task to the information receiving end through the bus includes:

Each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and queues the read data corresponding to the scheduling task to the bus transmission queue, so that the read data is transmitted to the information receiving end through the bus.

Correspondingly, this application also discloses a solid-state hard drive reading system, including:

An initialization module is used to initialize the back-end module of the solid-state drive to determine multiple scheduling subjects. The total number of scheduling subjects is greater than the total number of logical unit numbers in the solid-state drive;

The allocation module is used to allocate context to each scheduling subject;

The action module is used to receive request messages, so that each scheduling subject executes corresponding concurrent scheduling tasks according to the corresponding request messages, and transmits the read data corresponding to the scheduling tasks to the information receiving end through the bus.

Correspondingly, this application also discloses a solid-state hard disk reading device, including:

Memory, used to store computer programs;

The processor is used to implement the steps of any of the above solid-state disk reading methods when executing a computer program.

Correspondingly, this application also discloses a readable storage medium. A computer program is stored on the readable storage medium. When the computer program is executed by a processor, the steps of any of the above solid-state disk reading methods are implemented.

This application discloses a solid-state drive reading method, which includes: initializing the back-end module of the solid-state drive to determine multiple scheduling subjects. The total number of scheduling subjects is greater than the total number of logical unit numbers in the solid-state drive; for each Each scheduling subject is assigned context respectively; the request message is received, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to the information receiving end through the bus. The embodiment of this application sets up more scheduling subjects than the logical unit number, and then makes the scheduling subjects perform concurrent scheduling tasks. Since there are more scheduling subjects, the concurrent scheduling tasks can be executed faster than the original logical unit number. At the same time, It can effectively utilize the idle bus to transmit and read data, significantly increasing the bus usage frequency and reducing resource waste.

Description of the drawings

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings in the following description are only For the embodiments of the present application, those of ordinary skill in the art can also obtain other drawings based on the provided drawings without exerting creative efforts.

Figure 1 is a step flow chart of a solid state disk reading method in an embodiment of the present application;

Figure 2 is a timing distribution diagram of a solid-state disk reading method in an embodiment of the present application;

Figure 3 is a timing distribution diagram of a solid-state hard disk read test in the related art;

Figure 4 is a structural distribution diagram of a solid-state disk reading system in an embodiment of the present application;

Figure 5 is a schematic structural diagram of a solid-state hard disk reading device in an embodiment of the present application;

Figure 6 is a schematic structural diagram of a computer non-volatile readable storage medium in an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than 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 efforts fall within the scope of protection of this application.

With the development of technology, the capacity of block data blocks in each LUN is getting larger and larger, and at the same time, the number of blocks in each LUN is also increasing. When the total capacity of the solid-state drive remains unchanged, the number of blocks and the capacity The increase will result in the number of parallel LUNs in each channel becoming smaller and smaller, and the execution subjects of the read tasks in each channel becoming smaller and smaller, resulting in a reduction in reading efficiency. At the same time, problems of data bus idleness and resource waste also arise.

This application sets up more scheduling subjects than the logical unit number, and then makes the scheduling subjects perform concurrent scheduling tasks. Since there are more scheduling subjects, the concurrent scheduling tasks can be executed faster than the original logical unit number, and at the same time, it can be effectively Using the idle bus to transmit read data significantly increases the bus usage frequency and reduces resource waste.

The embodiment of the present application discloses a solid-state hard drive reading method, as shown in Figure 1, which includes:

S1: Initialize the back-end module of the solid-state drive to determine multiple scheduling subjects. The total number of scheduling subjects is greater than the total number of logical unit numbers in the solid-state drive;

S2: Assign context to each scheduling subject;

S3: Receive the request message, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to the information receiving end through the bus.

It can be understood that the scheduling subject is used to perform scheduling tasks according to the corresponding request information, and transmit the corresponding read data to the information receiving end through the bus. The information receiving end is connected to the solid state drive through the bus, sends the request information and receives the corresponding Read data. During the execution of multiple scheduling tasks, each scheduling subject does not interfere with each other and can independently execute its own scheduling tasks. That is, the execution of scheduling tasks is concurrent, and the read data of multiple scheduling tasks is transmitted to the information receiving end through the bus. When, it is in the form of serial transmission.

The reading method in the embodiment of the present application allocates the scheduling subjects downward from the original logical unit number LUN through step S1, so that the number of scheduling subjects sending read data to the bus exceeds the total number of logical unit numbers LUN. It is known that each A LUN includes multiple planes. A plane is the smallest unit in NAND Flash that can be operated according to commands such as read, write, and erase. Usually, each scheduling subject can be selected to correspond to several planes in the solid-state drive. Furthermore, each can be selected. The scheduling subject corresponds to a plane. In this case, the solid-state disk reading method has the highest efficiency and bus utilization.

Taking Figure 2 as an example, assume that there are two LUNs in the solid state drive: LUN-0 and LUN-1. LUN-0 and LUN-1 each have four planes, namely plane-0 to plane-3. Each scheduling subject corresponds to On a plane, all scheduling subjects execute concurrent scheduling tasks and transmit read data to the signal receiving end through the bus, as shown in Figure 2. The time taken to execute concurrent scheduling tasks is tR (time of reading, reading time), and the scheduling task The specific content is that the NAND in the solid state drive reads the data from the physical unit to the cache cache; then the scheduling body transmits the read data in the cache to the information receiving end through the bus. This period of time is BDT (Bulk Data Transfer) , batch data transmission), in the implementation of the read method in Figure 2, when the scheduling subject LUN-0-plane-0 is at tR, the read data transmission of 7 scheduling subjects can be completed on the bus at the same time, and the bus utilization rate is about 83.3 %, the idle ratio is 16.7%.

Similarly, in the background technology, when LUN is used as the execution subject to send read data to the bus, the number of LUNs is small and the number of data sent to the bus is small. Taking Figure 3 as an example, assume that there are two LUNs in the solid state drive: LUN-0 and LUN-1, the idle ratio of the bus It is about 87.9%, and a large number of bus resources are idle. In comparison, the utilization rate of bus resources in this embodiment is significantly improved.

In some embodiments of the present application, step S2 allocates a context to each scheduling subject to provide an operating environment for the execution of the scheduling subject. The number of allocable contexts in the system is sometimes limited and cannot be increased. If the number of allocable contexts is The total number exceeds the total number of planes in the solid state drive. In order to ensure that each scheduling subject can obtain the context, the total number of scheduling subjects will be limited by the number of contexts. In an optimal embodiment, the scheduling subject The total number of is the same as the total number of contexts.

Specifically, in step S3, each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and the process of transmitting the read data corresponding to the scheduling task to the information receiving end through the bus includes:

It can be understood that the execution of scheduling tasks by different scheduling entities is in a concurrent mode that does not affect each other, and the transmission of read data on the bus is in a serial mode, so it needs to be queued in the bus transmission queue and sent one by one.

In some embodiments of this application, step S3 is a process of receiving a request message so that each scheduling subject executes a corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to the information receiving end through the bus, Specifically include:

It can be understood that only when the request information is located to the corresponding scheduling subject, the scheduling subject can execute the corresponding request information.

In some embodiments of the present application, in step S3, a request message located to the corresponding scheduling subject is received, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and reads the read data corresponding to the scheduling task through The process of bus transmission to the information receiving end may include:

Receive request messages sent by FTL (Flash Translation Layer) and located to the corresponding scheduling subject, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and reads the data corresponding to the scheduling task Transmitted to the information receiving end through the bus.

It can be understood that in the embodiment of the present application, the total number of scheduling subjects exceeds the total number of logical unit numbers LUN, and the concurrency of operations represented by 4K random reads is greatly improved, and the performance is increased by multiples. Judging from the test results, the 4K random reading performance has been improved from the original 560K to 1600K, and the performance has increased by 2.8 times. As long as other indicators remain unchanged, the reading efficiency is much higher than the existing technology.

The embodiment of the present application discloses a solid-state drive reading method, which includes: initializing the back-end module of the solid-state drive, To determine multiple scheduling subjects, the total number of scheduling subjects is greater than the total number of logical unit numbers in the solid state drive; assign context to each scheduling subject; receive request messages so that each scheduling subject executes according to the corresponding request message The corresponding concurrent scheduling task is performed, and the read data corresponding to the scheduling task is transmitted to the information receiving end through the bus. The embodiment of this application sets up more scheduling subjects than the logical unit number, and then makes the scheduling subjects perform concurrent scheduling tasks. Since there are more scheduling subjects, the concurrent scheduling tasks can be executed faster than the original logical unit number. At the same time, It can effectively utilize the idle bus to transmit and read data, significantly increasing the bus usage frequency and reducing resource waste.

In some embodiments of the present application, the embodiment of the present application also discloses a solid-state hard drive reading system, as shown in Figure 4. include:

Initialization module 1 is used to initialize the back-end module of the solid-state drive to determine multiple scheduling subjects. The total number of scheduling subjects is greater than the total number of logical unit numbers in the solid-state drive;

Allocation module 2, used to allocate context to each scheduling subject;

Action module 3 is used to receive request messages, so that each scheduling subject executes corresponding concurrent scheduling tasks according to the corresponding request messages, and transmits the read data corresponding to the scheduling tasks to the information receiving end through the bus.

The embodiment of this application sets up more scheduling subjects than the logical unit number, and then makes the scheduling subjects perform concurrent scheduling tasks. Since there are more scheduling subjects, the concurrent scheduling tasks can be executed faster than the original logical unit number. At the same time, It can effectively utilize the idle bus to transmit and read data, significantly increasing the bus usage frequency and reducing resource waste.

In some embodiments of the present application, the action module 3 is specifically configured to: receive a request message located to the corresponding scheduling subject, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and assigns the scheduling task to the corresponding The read data is transmitted to the information receiving end through the bus.

In some embodiments of the present application, the action module 3 is specifically configured to: receive a request message sent by FTL and located to the corresponding scheduling subject, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and The read data corresponding to the scheduled task is transmitted to the information receiving end through the bus.

In some embodiments of the present application, the action module 3 is specifically used to: each scheduling subject executes a corresponding concurrent scheduling task according to the corresponding request message, and queues the read data corresponding to the scheduling task to the bus transmission queue, so that the read data Transmitted to the information receiving end through the bus.

In some embodiments of the present application, the embodiments of the present application also disclose a solid-state hard drive reading device, including:

Memory 502 as shown in Figure 5 is used to store computer programs;

The processor 501 is configured to implement the steps of the solid-state disk reading method in any of the above embodiments when executing a computer program.

Correspondingly, the embodiment of the present application also discloses a computer non-volatile readable storage medium. As shown in Figure 6, the computer non-volatile readable storage medium 6 stores a computer program 61, and the computer program 61 is processed. When the computer is executed, the steps of the solid state disk reading method in any of the above embodiments are implemented.

For specific details about the solid-state disk reading method in this embodiment, reference can be made to the relevant descriptions in the above embodiments and will not be described again here.

Among them, the solid-state hard disk reading device and the readable storage medium in this embodiment have the same technical effects as the solid-state hard disk reading method in the above embodiment, and will not be described again here.

Finally, it should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or any such actual relationship or sequence between operations. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element qualified by the statement "comprises a..." does not exclude the presence of additional identical elements in the process, method, article, or device that includes the element.

The above has introduced in detail a solid-state hard drive reading method, a corresponding solid-state hard drive reading system, a corresponding solid-state hard drive reading device, and a corresponding computer non-volatile readable storage medium provided by this application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and the core idea of the present application; at the same time, for those of ordinary skill in the art, based on this application There will be changes in the specific implementation and scope of application of the ideas. In summary, the content of this description should not be understood as a limitation of this application.

Claims

A solid-state disk reading method, which is characterized by including:

Initialize the back-end module of the solid-state drive to determine multiple scheduling subjects, where the total number of scheduling subjects is greater than the total number of logical unit numbers in the solid-state drive;

Allocate context to each scheduling subject respectively;

Request messages are received, so that each scheduling subject executes a corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to the information receiving end through the bus.
The solid state disk reading method according to claim 1, characterized in that:

Each scheduling subject corresponds to several planes in the solid state drive.
The solid state disk reading method according to claim 1, characterized in that:

Each scheduling subject corresponds to a plane.
The solid state disk reading method according to claim 1, characterized in that the receiving request message enables each of the scheduling subjects to execute a corresponding concurrent scheduling task according to the corresponding request message, and corresponds the scheduling task to The process of transmitting read data to the information receiving end through the bus includes:

Receive the request message located to the corresponding scheduling subject, so that each scheduling subject executes the corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to the information through the bus Receiving end.
The solid-state disk reading method according to claim 4, characterized in that: receiving a request message located to the corresponding scheduling subject, so that each of the scheduling subjects performs corresponding concurrent scheduling according to the corresponding request message. task, and the process of transmitting the read data corresponding to the scheduled task to the information receiving end through the bus, including:

Receive the request message sent by the flash translation layer FTL and located to the corresponding scheduling subject, so that each of the scheduling subjects executes the corresponding concurrent scheduling task according to the corresponding request message, and transfers the corresponding scheduling task to The read data is transmitted to the information receiving end through the bus.
The solid state disk reading method according to claim 5, characterized in that if the total number of allocated contexts exceeds the total number of the logical unit numbers, the total number of the scheduling subjects is limited by the total number of contexts. limit.
The solid-state disk reading method according to claim 6, wherein the total number of scheduling subjects is the same as the total number of contexts.
The solid state disk reading method according to claim 6 or 7, characterized in that the context is used to provide an operating environment for the execution of the scheduling subject.
The solid-state drive reading method according to claim 1, characterized in that, the back-end module of the solid-state drive is initialized to determine multiple scheduling subjects, including:

The scheduling subjects are allocated downward from the logical unit number so that the number of scheduling subjects sending read data to the bus exceeds the total number of the logical unit numbers.
The solid-state disk reading method according to any one of claims 1 to 7, characterized in that, during the execution of multiple scheduling tasks, each scheduling subject is independent and does not interfere with each other.
The solid-state disk reading method according to any one of claims 1 to 7, characterized in that when the read data of multiple scheduling tasks is transmitted to the information receiving end through the bus, it is in the form of serial transmission.
The solid-state disk reading method according to any one of claims 1 to 7, characterized in that the time taken to execute concurrently scheduled tasks is read time.
The solid state disk reading method according to claim 12, characterized in that the transmission of read data of at least one scheduling subject on the bus is completed simultaneously within the reading time.
The solid-state disk reading method according to any one of claims 1 to 7, characterized in that each of the scheduling subjects executes a corresponding concurrent scheduling task according to the corresponding request message, and corresponds the scheduling task to The read data is transmitted to the information receiving end through the bus, including:

Each of the scheduling subjects performs a scheduling task, reads data from the physical unit, and transmits the read data to the information receiving end through the bus.
The solid-state disk reading method according to claim 14, characterized in that reading data from a physical unit and transmitting the read data to the information receiving end through a bus includes:

The data is read from the physical unit to the cache cache through the flash memory particles NAND in the solid state drive, and the scheduling body transmits the read data in the cache to the information receiving end through the bus.
The solid-state disk reading method according to claim 15, characterized in that the time it takes for the scheduling subject to transmit the read data in the cache to the information receiving end through the bus is batch data transmission.
The solid-state disk reading method according to any one of claims 1 to 7, characterized in that each of the scheduling subjects executes a corresponding concurrent scheduling task according to the corresponding request message, and sends the corresponding concurrent scheduling task to the The process of transmitting read data to the information receiving end through the bus includes:

Each scheduling subject executes a corresponding concurrent scheduling task according to the corresponding request message, and queues the read data corresponding to the scheduling task into the bus transmission queue, so that the read data is transmitted to the information receiving end through the bus.
A solid-state hard disk reading system, which is characterized by including:

An initialization module, used to initialize the back-end module of the solid-state drive to determine multiple scheduling subjects, where the total number of scheduling subjects is greater than the total number of logical unit numbers in the solid-state drive;

An allocation module, configured to allocate context to each scheduling subject;

An action module is configured to receive a request message, so that each scheduling subject executes a corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to the information receiving end through the bus.
A solid-state hard drive reading device, characterized by including:

Memory, used to store computer programs;

A processor, configured to implement the steps of the solid-state disk reading method according to any one of claims 1 to 17 when executing the computer program.
A computer non-volatile readable storage medium, characterized in that a computer program is stored on the computer non-volatile readable storage medium, and when the computer program is executed by a processor, any one of claims 1 to 17 is implemented. A step of the solid state disk reading method.