CN114546294B - Solid state disk reading method, system and related components - Google Patents
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Abstract
The application discloses a solid state disk reading method, a solid state disk reading system and related components, and relates to the field of solid state disk task operation, wherein the method comprises the following steps: initializing a rear-end module of the solid state disk to determine a plurality of scheduling main bodies, wherein the total number of the scheduling main bodies is greater than the total number of the logic unit numbers in the solid state disk; respectively allocating context to each scheduling subject; and receiving request messages to enable each scheduling main body to execute corresponding concurrent scheduling tasks according to the corresponding request messages, and transmitting read data corresponding to the scheduling tasks to an information receiving end through a bus. The method is used for executing the read tasks of the solid state disk, the scheduling main bodies which are more than the logic unit numbers are arranged, then the scheduling main bodies are enabled to execute the concurrent scheduling tasks, the speed of executing the concurrent scheduling tasks is higher than that of executing the concurrent scheduling tasks by the original logic unit numbers due to the fact that the number of the scheduling main bodies is more, meanwhile, idle bus transmission read data can be effectively utilized, and resource waste is reduced.
Description
Technical Field
The invention relates to the field of task operation of solid state disks, in particular to a solid state disk reading method, a solid state disk reading system and related components.
Background
In the big data era, the importance of data storage is more and more obvious. While the computing speed of components such as a Central Processing Unit (CPU) is getting higher and higher, the data storage and reading speed is always a bottleneck problem of the system running speed.
Different from a traditional hard disk, flash memory particles NAND in a storage Unit of a solid state disk are grouped by taking channel channels as units, each channel is provided with a controller, the NAND operation of each channel can be performed in parallel, the channels are not influenced mutually, meanwhile, the operation of a plurality of Logic Unit Numbers (LUNs) is controlled to be concurrent in the same channel, each LUN executes respective operation task respectively, but all LUNs share one bus, and all LUNs output data in a serial mode through the bus.
However, with the development of technology, the capacity of the block data blocks in each LUN is larger and larger, and the number of blocks in each LUN is also larger and larger, so that when the total capacity of the solid state disk is not changed, the number and capacity of the blocks increase, the number of LUNs that can be parallel in each channel decreases, the number of execution bodies of the read tasks in each channel decreases, the read efficiency decreases, and meanwhile, the problems of data bus idling and resource waste also occur.
Therefore, how to provide a solution to the above technical problems is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a method, a system and related components for reading a solid state disk, so as to improve the reading efficiency. The specific scheme is as follows:
a solid state disk reading method comprises the following steps:
initializing a rear-end module of a solid state disk to determine a plurality of scheduling main bodies, wherein the total number of the scheduling main bodies is greater than the total number of logic unit numbers in the solid state disk;
respectively allocating a context to each scheduling subject;
and receiving request messages to enable each scheduling main body to execute corresponding concurrent scheduling tasks according to the corresponding request messages, and transmitting read data corresponding to the scheduling tasks to an information receiving end through a bus.
Preferably, each scheduling main body corresponds to a plurality of planes in the solid state disk.
Preferably, each scheduling subject corresponds to a plane.
Preferably, the process of receiving the request message so that each scheduling master 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 through a bus includes:
and receiving the request message positioned to the corresponding scheduling main body, so that each scheduling main body executes the corresponding concurrent scheduling task according to the corresponding request message, and transmitting the read data corresponding to the scheduling task to an information receiving end through a bus.
Preferably, the process of receiving the request message located to the corresponding scheduling entity, so that each scheduling entity 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 includes:
and receiving a request message sent by the FTL and positioned to the corresponding scheduling main body, so that each scheduling main body executes a corresponding concurrent scheduling task according to the corresponding request message, and transmitting read data corresponding to the scheduling task to an information receiving end through a bus.
Preferably, the total number of the scheduling subjects is the same as the total number of the contexts.
Preferably, the process that each scheduling main body 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 through a bus includes:
and each scheduling main body executes a corresponding concurrent scheduling task according to the corresponding request message, and queues read data corresponding to the scheduling task to a bus transmission queue so that the read data is transmitted to an information receiving end through a bus.
Correspondingly, the present application also discloses a solid state disk reading system, including:
the initialization module is used for initializing a rear end module of the solid state disk to determine a plurality of scheduling main bodies, wherein the total number of the scheduling main bodies is greater than the total number of the logic unit numbers in the solid state disk;
an allocation module, configured to allocate a context to each scheduling subject;
and the action module is used for receiving the request message so that each scheduling main body executes the corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to an information receiving end through a bus.
Correspondingly, this application still discloses a solid state hard drives reading device, includes:
a memory for storing a computer program;
a processor, configured to implement the steps of the solid state disk reading method according to any one of the above items when executing the computer program.
Correspondingly, the application also discloses a readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the solid state disk reading method as described in any one of the above.
The application discloses a solid state disk reading method, which comprises the following steps: initializing a rear-end module of a solid state disk to determine a plurality of scheduling main bodies, wherein the total number of the scheduling main bodies is greater than the total number of logic unit numbers in the solid state disk; respectively allocating a context to each scheduling subject; and receiving request messages to enable each scheduling main body to execute corresponding concurrent scheduling tasks according to the corresponding request messages, and transmitting read data corresponding to the scheduling tasks to an information receiving end through a bus. The scheduling main body which is more than the logic unit number is arranged, then the scheduling main body executes the concurrent scheduling task, and the number of the scheduling main bodies is more, so that the speed of executing the concurrent scheduling task is higher than that of executing the concurrent scheduling task by the original logic unit number, meanwhile, idle bus transmission read data can be effectively utilized, the use frequency of the bus is obviously improved, and the resource waste is reduced.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart illustrating steps of a method for reading a solid state disk according to an embodiment of the present invention;
fig. 2 is a timing distribution diagram of a solid state disk reading method according to an embodiment of the present invention;
FIG. 3 is a timing diagram of a read test of a solid state drive according to the prior art;
fig. 4 is a structural distribution diagram of a solid state disk reading system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Along with the technical development, the capacity of the block data blocks in each LUN is larger and larger, and meanwhile, the number of blocks in each LUN is also larger and larger, when the total capacity of the solid state disk is not changed, the number of LUNs which can be parallel in each channel is reduced and the number of execution bodies of the read tasks of each channel is reduced and smaller due to the increase of the number and the capacity of the blocks, so that the reading efficiency is reduced, and meanwhile, the problems of data bus idling and resource waste also occur.
The scheduling main body which is more than the logic unit number is arranged, then the scheduling main body executes the concurrent scheduling task, and the number of the scheduling main bodies is more, so that the speed of executing the concurrent scheduling task is higher than that of executing the concurrent scheduling task by the original logic unit number, meanwhile, idle bus transmission read data can be effectively utilized, the use frequency of the bus is obviously improved, and the resource waste is reduced.
The embodiment of the invention discloses a solid state disk reading method, which is shown in figure 1 and comprises the following steps:
s1: initializing a rear-end module of the solid state disk to determine a plurality of scheduling main bodies, wherein the total number of the scheduling main bodies is greater than the total number of logic unit numbers in the solid state disk;
s2: respectively allocating context to each scheduling subject;
s3: and receiving the request message to enable each scheduling main body to execute the 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.
It can be understood that the scheduling main body is configured to execute a scheduling task according to the corresponding request information, and transmit the corresponding read data to the information receiving end through the bus, where the information receiving end is connected to the solid state disk through the bus, and sends the request information and receives the corresponding read data. In the process of executing the plurality of scheduling tasks, the scheduling main bodies do not interfere with each other, and can independently execute the respective scheduling tasks, namely the execution of the scheduling tasks is concurrent, and the read data of the plurality of scheduling tasks is in a serial transmission form when being transmitted to the information receiving end through the bus.
In the reading method of this embodiment, the scheduling entity is distributed downward from the original logical unit number LUN through step S1, so that the number of the scheduling entities sending read data to the bus exceeds the total number of the logical unit number LUNs, and it is known that each LUN includes multiple planes, which are the smallest units in the NAND Flash that can operate according to commands such as read, write, and erase, and usually, multiple planes in the solid state disk corresponding to each scheduling entity can be selected, and further, each scheduling entity can be selected to correspond to one plane.
Taking fig. 2 as an example, assume that there are two LUNs in the solid state disk: the method comprises the following steps that four planes are respectively arranged on LUN-0 and LUN-1, the LUN-0 and the LUN-1 are respectively arranged on the planes from plane-0 to plane-3, each scheduling main body corresponds to one plane, the condition that all scheduling main bodies execute concurrent scheduling tasks and transmit read data to a signal receiving end through a bus is shown in FIG. 2, wherein the time consumed for executing the concurrent scheduling tasks is tR (time of reading), and the specific content of the scheduling tasks is that data are read from a physical unit to a cache by NAND in a solid state disk; and then the scheduling main body transmits the read Data read into the cache to an information receiving end through a bus, wherein the time consumption is BDT (Bulk Data Transfer), and in the implementation of the reading method in fig. 2, when the scheduling main body LUN-0-plane-0 is at tR, the transmission of the read Data of 7 scheduling main bodies on the bus can be completed simultaneously, the utilization rate of the bus is about 85.3%, and the idle occupation ratio is 16.7%.
Similarly, in the background art, when the LUN is used as an execution subject to send read data to the bus, the number of LUNs is small, and the number of times of sending data to the bus is small, taking fig. 3 as an example, it is assumed that there are two LUNs in the solid state disk: the idle occupation ratio of the bus is about 87.9% for the LUN-0 and LUN-1, and a large amount of bus resources are idle, compared with the utilization ratio of the bus resources in this embodiment, the utilization ratio of the bus resources is obviously improved.
Further, step S2 allocates contexts to each scheduling entity, so as to provide an operating environment for the execution of the scheduling entity, the number of allocable contexts in the system is sometimes limited and cannot be increased, and if the total number of allocable contexts exceeds the total number of planes in the solid state disk, in order to ensure that each scheduling entity can obtain a context, the total number of scheduling entities is limited by the number of contexts.
Specifically, the process that each scheduling entity in step S3 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:
and each scheduling main body executes a corresponding concurrent scheduling task according to the corresponding request message and queues read data corresponding to the scheduling task to a bus transmission queue so that the read data is transmitted to the information receiving end through a bus.
It can be understood that different scheduling entities perform scheduling tasks in a concurrent mode without affecting each other, and read data is transmitted in a serial mode on the bus, so that the read data needs to be queued to the bus transmission queue to be transmitted one by one.
Further, the step S3 is a process of receiving the request message, so that each scheduling entity executes a corresponding concurrent scheduling task according to the corresponding request message, and transmitting read data corresponding to the scheduling task to the information receiving end through the bus, which specifically includes:
and receiving the request message positioned to the corresponding scheduling main body, so that each scheduling main body executes the 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.
It can be understood that, when the request information is located to the corresponding scheduling subject, the scheduling subject can execute the corresponding request information.
Further, the step S3 of receiving 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 transmitting the read data corresponding to the scheduling task to the information receiving end through the bus may specifically include:
receiving request messages sent and positioned to corresponding scheduling main bodies by an FTL (Flash Translation Layer), so that each scheduling main body executes corresponding concurrent scheduling tasks according to the corresponding request messages, and transmitting read data corresponding to the scheduling tasks to an information receiving end through a bus.
It can be understood that, in this embodiment, the total number of the scheduling subject exceeds the total number of the logical unit numbers LUN, the concurrency of operations represented by random 4K reading is greatly improved, and the performance is increased by multiple levels. From the test condition, the 4K random reading and testing performance is improved from 560K to 1600K, the performance is improved by 2.8 times, the reading efficiency is far higher than that of the prior art on the premise of not changing other indexes,
the embodiment of the application discloses a solid state disk reading method, which comprises the following steps: initializing a rear-end module of the solid state disk to determine a plurality of scheduling main bodies, wherein the total number of the scheduling main bodies is greater than the total number of the logic unit numbers in the solid state disk; respectively allocating a context to each scheduling subject; and receiving request messages to enable each scheduling main body to execute corresponding concurrent scheduling tasks according to the corresponding request messages, and transmitting read data corresponding to the scheduling tasks to an information receiving end through a bus. The scheduling main body which is more than the logic unit number is arranged, then the scheduling main body is enabled to execute the concurrent scheduling task, the number of the scheduling main bodies is more, so that the speed of executing the concurrent scheduling task is higher than that of the original logic unit number, meanwhile, idle buses can be effectively utilized to transmit read data, the use frequency of the buses is obviously improved, and the resource waste is reduced.
Correspondingly, the embodiment of the application also discloses a solid state disk reading system, which is shown in fig. 4. The method comprises the following steps:
the system comprises an initialization module 1, a scheduling module and a control module, wherein the initialization module is used for initializing a rear end module of a solid state disk to determine a plurality of scheduling main bodies, and the total number of the scheduling main bodies is greater than the total number of logic unit numbers in the solid state disk;
an allocating module 2, configured to allocate a context to each scheduling subject;
and the action module 3 is used for receiving the request message so that each scheduling main body executes the corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to an information receiving end through a bus.
The scheduling main body which is more than the logic unit number is arranged, then the scheduling main body is enabled to execute the concurrent scheduling task, the speed of executing the concurrent scheduling task is higher than that of executing the concurrent scheduling task by the original logic unit number due to the fact that the number of the scheduling main bodies is larger, meanwhile, idle buses can be effectively utilized to transmit read data, the use frequency of the buses is obviously improved, and resource waste is reduced.
In some specific embodiments, each scheduling entity corresponds to a plurality of planes in the solid state disk.
In some specific embodiments, each scheduling subject corresponds to one plane.
In some specific embodiments, the action module 3 is specifically configured to: and receiving the request message positioned to the corresponding scheduling main body, so that each scheduling main body executes the corresponding concurrent scheduling task according to the corresponding request message, and transmitting the read data corresponding to the scheduling task to an information receiving end through a bus.
In some specific embodiments, the action module 3 is specifically configured to: and receiving a request message sent by the FTL and positioned to the corresponding scheduling main body, so that each scheduling main body executes a corresponding concurrent scheduling task according to the corresponding request message, and transmitting read data corresponding to the scheduling task to an information receiving end through a bus.
In some specific embodiments, the total number of the scheduling subjects is the same as the total number of the contexts.
In some specific embodiments, the action module 3 is specifically configured to: and each scheduling main body executes a corresponding concurrent scheduling task according to the corresponding request message, and queues read data corresponding to the scheduling task to a bus transmission queue so that the read data is transmitted to an information receiving end through a bus.
Correspondingly, the embodiment of the present application further discloses a solid state disk reading device, including:
a memory for storing a computer program;
a processor, configured to implement the steps of the solid state disk reading method according to any of the above embodiments when the computer program is executed.
Correspondingly, the embodiment of the present application further discloses a readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the solid state disk reading method according to any one of the above embodiments are implemented.
For specific details of the solid state disk reading method in this embodiment, reference may be made to the related description in the foregoing embodiments, and details are not described here again.
The solid state disk reading device and the readable storage medium in this embodiment have the same technical effects as the solid state disk reading method in the foregoing embodiment, and are not described herein again.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The solid state disk reading method, the solid state disk reading system and the related components provided by the invention are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. A solid state disk reading method is characterized by comprising the following steps:
initializing a rear-end module of a solid state disk to determine a plurality of scheduling main bodies, wherein the total number of the scheduling main bodies is greater than the total number of logic unit numbers in the solid state disk;
respectively allocating context to each scheduling subject;
receiving request messages to enable each scheduling main body to execute corresponding concurrent scheduling tasks according to the corresponding request messages, and transmitting read data corresponding to the scheduling tasks to an information receiving end through a bus;
each scheduling main body corresponds to at least one plane in the solid state disk;
the process that each scheduling main body 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 comprises the following steps:
and each scheduling main body executes a corresponding concurrent scheduling task according to the corresponding request message, and queues read data corresponding to the scheduling task to a bus transmission queue so that the read data is transmitted to an information receiving end through a bus.
2. The method for reading the solid state disk according to claim 1, wherein the process of receiving the request message so that each scheduling entity 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 through a bus comprises:
and receiving the request message positioned to the corresponding scheduling main body, so that each scheduling main body executes the corresponding concurrent scheduling task according to the corresponding request message, and transmitting the read data corresponding to the scheduling task to an information receiving end through a bus.
3. The method for reading the solid state disk according to claim 2, wherein the step of receiving the request message addressed 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 an information receiving end through a bus comprises:
and receiving a request message sent by the FTL and positioned to the corresponding scheduling main body, so that each scheduling main body executes a corresponding concurrent scheduling task according to the corresponding request message, and transmitting read data corresponding to the scheduling task to an information receiving end through a bus.
4. The solid state disk reading method according to claim 3, wherein the total number of the scheduling entities is the same as the total number of the contexts.
5. A solid state disk reading system, comprising:
the initialization module is used for initializing a rear end module of the solid state disk to determine a plurality of scheduling main bodies, wherein the total number of the scheduling main bodies is greater than the total number of the logic unit numbers in the solid state disk;
an allocation module, configured to allocate a context to each scheduling subject;
the action module is used for receiving the request message so that each scheduling main body executes a corresponding concurrent scheduling task according to the corresponding request message, and transmits the read data corresponding to the scheduling task to an information receiving end through a bus;
each scheduling main body corresponds to at least one plane in the solid state disk;
the process that each scheduling main body 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 comprises the following steps:
and each scheduling main body executes a corresponding concurrent scheduling task according to the corresponding request message, and queues read data corresponding to the scheduling task to a bus transmission queue so that the read data is transmitted to an information receiving end through a bus.
6. A solid state disk reading device, comprising:
a memory for storing a computer program;
processor for implementing the steps of the solid state disk reading method according to any one of claims 1 to 4 when executing the computer program.
7. A readable storage medium, characterized in that the readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the solid state disk reading method according to any one of claims 1 to 4.
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| PCT/CN2023/082057 WO2023202288A1 (en) | 2022-04-22 | 2023-03-17 | Solid-state drive reading method, system and apparatus, and storage medium |
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| WO2023202288A1 (en) | 2023-10-26 |
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