CN108984117A - A kind of data read-write method, medium and equipment - Google Patents
A kind of data read-write method, medium and equipment Download PDFInfo
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- CN108984117A CN108984117A CN201810621477.XA CN201810621477A CN108984117A CN 108984117 A CN108984117 A CN 108984117A CN 201810621477 A CN201810621477 A CN 201810621477A CN 108984117 A CN108984117 A CN 108984117A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
- G06F3/0611—Improving I/O performance in relation to response time
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0644—Management of space entities, e.g. partitions, extents, pools
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/065—Replication mechanisms
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
Abstract
The present invention provides a kind of data read-write method, medium and equipment.The method, comprising: obtain the write request of new data；Pre-set tertiary storage system is based on using I/O scheduler according to the write request, secondary storage devices are written into the new data；The secondary storage devices are nonvolatile storage；Obtain the read request of the new data；According to the read request, the new data is directly read from the secondary storage devices using operating system.Nonvolatile storage is written by the data that will need to rewrite, compared to write-in external memory, the speed of data write-in can be accelerated；And when reading data, the data are directly read from nonvolatile storage, can accelerate the speed of reading data, and then improve the speed of reading and writing data, optimize reading and writing data performance.
Description
Technical field
The present invention relates to field of computer technology, and in particular to a kind of data read-write method, medium and equipment.
Background technique
In the prior art, data write operation usually follows direct write strategy, writes direct and permanently stores to guarantee holding for data
Long property.The billing information needs that user submits in typical case scene such as shopping at network are saved in transaction data base rapidly, this
Write operation caused by class is traded may be less than 1KB, and typical database page size is 8KB.For another example, database is to metadata
Update modification also only relate to the write operation of low volume data, and need to be immediately stored in lasting equipment.The place of data write request
Reason crosses over many levels, from top to bottom includes: block device manager, I/O scheduler, file system and data base management system.?
The problems such as when write operation, each level can lead to the problem of again and write, and multiple direct write can cause equipment performance to decline, and metadata increases.
When reading data, it is also desirable to from permanently store it is middle first copy data to memory, then read from memory, reading speed is slower.
Therefore, in the prior art, reading and writing data speed is slower, and performance is poor.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of data read-write method, medium and equipment, can be improved number
According to the speed of read-write, optimize reading and writing data performance.
In a first aspect, the present invention provides a kind of data read-write methods, comprising:
Obtain the write request of new data；
It is based on pre-set tertiary storage system, the new data is write using I/O scheduler according to the write request
Enter secondary storage devices；The secondary storage devices are nonvolatile storage；
Obtain the read request of the new data；
According to the read request, the new data is directly read from the secondary storage devices using operating system.
Optionally, the tertiary storage system, comprising: primary storage device, secondary storage devices and tertiary storage device；
The primary storage device is external memory；The tertiary storage device is memory.
Optionally, it is described obtain new data write request the step of after, further includes:
The performance for the new data for needing to be written in the write request is assessed, assessment result is obtained；
Judge whether the assessment result reaches preset threshold；
If reaching, execute described according to the write request, using I/O scheduler, is based on pre-set tertiary storage system
The step of uniting, secondary storage devices be written into the new data.
Optionally, further includes: if judging, the assessment result does not reach preset threshold；
Then it is based on pre-set tertiary storage system, is write new data into using I/O scheduler according to the write request
The primary storage device；
It is described according to the read request, the new number is directly read from the secondary storage devices using operating system
According to, comprising:
According to the read request, the new data is copied to described three from the primary storage device using operating system
Grade storage equipment；
The new data is read from the tertiary storage device.
Optionally, the performance for the new data for needing to be written in the assessment write request, obtains assessment result, comprising:
The use value for the new data for needing to be written in the write request is assessed, and the new data is written described two
External memory amount of debris and readwrite performance after grade storage equipment, obtain assessment result.
Optionally, the use value for the new data for needing to be written in the write request is assessed, comprising:
According to the read-write frequency for the new data for needing to be written in the write request, the use value of the new data is assessed.
Second aspect, the present invention provide a kind of computer readable storage medium, are stored thereon with computer program, the program
One of first aspect data read-write method is realized when being executed by processor.
The third aspect, the present invention provide a kind of reading and writing data equipment, comprising: memory, processor and are stored in memory
Computer program that is upper and can running on a processor, the processor realize one of first aspect when executing described program
Data read-write method.
The present invention provides a kind of data read-write method, and nonvolatile storage is written by the data that will need to rewrite, compares
In write-in external memory, the speed of data write-in can be accelerated；And when reading data, the number is directly read from nonvolatile storage
According to can accelerate the speed of reading data, and then improve the speed of reading and writing data, optimize reading and writing data performance.
The present invention provides a kind of computer readable storage medium and a kind of reading and writing data equipment, with a kind of above-mentioned reading and writing data
Method is for identical inventive concept, beneficial effect having the same.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is a kind of flow chart of data read-write method provided by the invention.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be intended only as example, and cannot be used as a limitation and limit protection of the invention
Range.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
The present invention provides a kind of data read-write method, medium and equipment.With reference to the accompanying drawing to the embodiment of the present invention
It is illustrated.
First embodiment:
Referring to FIG. 1, Fig. 1 is a kind of flow chart for data read-write method that the specific embodiment of the invention provides, this implementation
A kind of data read-write method that example provides, comprising:
Step S101: the write request of new data is obtained.
Step S102: pre-set tertiary storage system is based on, by institute using I/O scheduler according to the write request
State new data write-in secondary storage devices；The secondary storage devices are nonvolatile storage.
Step S103: the read request of the new data is obtained.
Step S104: according to the read request, read directly from the secondary storage devices using operating system described in
New data.
The present invention provides a kind of tertiary storage system, the tertiary storage systems, comprising: primary storage device, second level are deposited
Store up equipment and tertiary storage device；Primary storage device is external memory；Secondary storage devices are nonvolatile storage；Tertiary storage is set
Standby is memory.Wherein, nonvolatile storage can guarantee the data persistence of storage, after power-off or shutdown, non-volatile memory
Data in device can't disappear.Moreover, operating system can also directly access nonvolatile storage, from nonvolatile storage
Called data, makes the effect of the existing memory of nonvolatile storage, and plays the role of external memory.Wherein, primary storage device can be
Disk.
In the present invention, nonvolatile storage can be inserted in memory slot.
In the present invention, write request refers to the write request for rewriting data.
The present invention is suitable for distributed computing process and single machine calculating process.
In the prior art, it when rewriting data, needs first to find corresponding data in disk, then rewritten；It is reading
Access according to when, it is also desirable to first find corresponding data in disk, then the data copied in memory, then is read from memory
The data.And the present invention passes through the data that will need to rewrite and nonvolatile storage is written, and compared to write-in external memory, can accelerate number
According to the speed of write-in；And when reading data, the data are directly read from nonvolatile storage, can accelerate the speed of reading data
Degree, and then the speed of reading and writing data is improved, optimize reading and writing data performance.
In reading and writing data technology, the corresponding data in each address, are being set according to write request to secondary storage in external memory
When standby middle write-in data, need into secondary storage devices, to make corresponding address of cache address in secondary storage devices and
Address in external memory is identical, deposits the write-in revised new data of corresponding data in equipment in second level.In this way, for users, meeting
Intuitively think that new data has been written into external memory, and in fact, new data has been written into secondary storage devices, by this
Page mode is hidden, reading and writing data performance, and good reliability can not only be improved, can guarantee reliable file operation.
In a specific embodiment provided by the invention, it is described obtain new data write request the step of after, also
Include: the performance for the new data for needing to be written in the assessment write request, obtains assessment result；Whether judge the assessment result
Reach preset threshold；If reaching, execute described according to the write request, using I/O scheduler, is based on pre-set three-level
Storage system, by the new data be written secondary storage devices the step of.
After the write request for obtaining new data, need to judge the position of new data write-in, if write-in external memory, data are read
Take performance poor；If memory is written, next time is more convenient using meeting, but just will be deleted after being powered off, and cannot be persistently stored；If writing
Enter nonvolatile storage, then next time can be more convenient using the data, and can guarantee the persistence of data, but will cause external memory
Disk fragments increase, and are unfavorable for the reading of a large amount of continuous datas.Therefore, it according to write request, when data are written, need to assess and write
The performance of the new data entered judges the writing position of new data according to assessment result.
When the performance for the new data for needing to be written in assessing write request, cost evaluation function can be used, assesses new number
According to performance.
When assessing the performance of new data, it can be estimated that the use value of new data, and institute is written into the new data
External memory amount of debris and readwrite performance after stating secondary storage devices, it is brought after assessing new data write-in secondary storage devices
Loss and interests after balance loss and interests, determine the writing position of new data.
The performance for assessing new data after balance loss and interests, is based on cost evaluation function, can obtain assessment result,
If the assessment result reaches preset threshold, pre-set tertiary storage system is based on using I/O scheduler according to write request
System, writes new data into secondary storage devices.
If the assessment result does not reach preset threshold, according to write request, using I/O scheduler, based on pre-set
Tertiary storage system, writes new data into primary storage device.
When reading new data, if new data is stored in secondary storage devices, directly read from secondary storage devices
New data；If new data is stored in primary storage device, from primary storage device duplication new data to memory, then from memory
Read new data.
In the present invention, if obtaining read operation when obtaining write operation simultaneously, and read operation is to read the reading of the new data
Operation the new data can then be written in memory, while memory is written, it is also necessary to the performance for assessing new data, it will be new
Primary storage device or secondary storage devices are written in data, guarantee data persistence.When reading new data, if being stored in memory
There is the new data, then can directly read new data from memory.
By the assessment to new data performance, reading and writing data performance can be improved as far as possible, optimize reading and writing data process.
In a specific embodiment provided by the invention, the use for the new data for needing to be written in the write request is assessed
Value, comprising: according to the read-write frequency for the new data for needing to be written in the write request, that assesses the new data uses valence
Value.
When assessing use value, can be assessed according to the read-write frequency of new data.If new data is written over or reads
Number it is higher, then secondary storage devices are write new data into, to improve reading and writing data performance.
But correspondingly, will also result in disk fragments, loss is brought to data read process.
In the present invention, when judging whether new data can be written secondary storage devices, LUR (Least can also be used
Recently Used) algorithm, judge whether new data can be written secondary storage devices.
In the present invention, when assessing the performance of new data, it may be considered that the use value of new data, external memory amount of debris,
One of whole readwrite performance etc. is a variety of, this is all within the scope of the present invention.
In the present invention, according to write request, when writing new data into tertiary storage system, new data can also be divided into
Multiple portions, each part can be respectively stored into different storage equipment.
After obtaining write request, the performance of new data in write request is assessed, wherein new data may include multiple data,
The assessment result of each data is different, and the processing method of different assessment results is different, according to assessment result, by the number of different piece
According to being respectively stored into tertiary storage system.
Whether new data is needed to be written in memory, then whether the use value for needing to assess the data is very big, if short
New data is often accessed, is often written in time, then can write the data into memory, also, since memory cannot
Therefore the new data of memory is written in persistence, it is also necessary to be written to nonvolatile storage or external memory, guarantee data persistence.
In the present invention, the storage size relationship of primary storage device, secondary storage devices and tertiary storage device
Are as follows: primary storage device is greater than secondary storage devices, and secondary storage devices are greater than tertiary storage device.
When secondary storage devices do not have memory space, then need to judge the history number in new data and secondary storage devices
According to which it is more valuable be stored in secondary storage devices, if the performance evaluation result of new data is than the Performance Evaluation of historical data
As a result poor, then it writes new data into primary storage device；If the performance evaluation result of new data is commented than the performance of historical data
Estimate that result is good, then needs to select some data in secondary storage devices to fall on primary storage device, then write new data into two
Grade storage equipment.
When selecting some data in secondary storage devices to fall on primary storage device, need to assess secondary storage devices
In each data performance, selected according to performance evaluation result, the poor data of selection assessment performance fall on primary storage device.
In the present invention, it when being written with more new data in secondary storage devices, for external memory, just will form very much
Fragmentation of data, it is just relatively time-consuming when reading a large amount of continuous datas, therefore, it is necessary to the set time to secondary storage devices and
Data in primary storage device are integrated, as far as possible the continuity of the outer deposit data of more guarantees, and then improve reading and writing data
Energy.
It, can be defeated by the data in secondary storage devices when being integrated to secondary storage devices and primary storage device
Enter into primary storage device；Data in primary storage device can also be reset.This is all in protection model of the invention
In enclosing.
In the present invention, it when the number of tiles of external memory is greater than default fragment-threshold, needs to eliminate fragment, resets external memory.
By reducing fragment, reading and writing data performance can be improved.
More than, it is a kind of data read-write method provided by the invention.
Second embodiment:
In above-mentioned first embodiment, a kind of data read-write method is provided, in conjunction with above-mentioned first embodiment, the present invention
Second embodiment provides a kind of computer readable storage medium, is stored thereon with computer program, which is executed by processor
A kind of data read-write method that the above-mentioned first embodiment of Shi Shixian provides.
3rd embodiment:
In conjunction with a kind of data read-write method that first embodiment provides, the present invention also provides a kind of reading and writing data equipment, packets
Include: memory, processor and storage on a memory and the computer program that can run on a processor, the processor execution
A kind of data read-write method that above-mentioned first embodiment provides is realized when described program.
In specification of the invention, numerous specific details are set forth.It is to be appreciated, however, that the embodiment of the present invention can be with
It practices without these specific details.In some instances, well known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this specification.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (8)
1. a kind of data read-write method characterized by comprising
Obtain the write request of new data；
Pre-set tertiary storage system is based on using I/O scheduler according to the write request, the new data is written two
Grade storage equipment；The secondary storage devices are nonvolatile storage；
Obtain the read request of the new data；
According to the read request, the new data is directly read from the secondary storage devices using operating system.
2. the method according to claim 1, wherein the tertiary storage system, comprising: primary storage device,
Secondary storage devices and tertiary storage device；
The primary storage device is external memory；The tertiary storage device is memory.
3. according to the method described in claim 2, it is characterized in that, it is described obtain new data write request the step of after,
Further include:
The performance for the new data for needing to be written in the write request is assessed, assessment result is obtained；
Judge whether the assessment result reaches preset threshold；
If reaching, execute described according to the write request, using I/O scheduler, be based on pre-set tertiary storage system,
The step of secondary storage devices are written into the new data.
4. according to the method described in claim 3, it is characterized by further comprising: the assessment result does not reach pre- if judging
If threshold value；
Pre-set tertiary storage system is then based on using I/O scheduler according to the write request, is write new data into described
Primary storage device；
It is described that the new data is directly read using operating system from the secondary storage devices according to the read request, packet
It includes:
According to the read request, the new data is copied into the three-level from the primary storage device using operating system and is deposited
Store up equipment；
The new data is read from the tertiary storage device.
5. according to the method described in claim 3, it is characterized in that, the new data for needing to be written in the assessment write request
Performance, obtain assessment result, comprising:
The use value for the new data for needing to be written in the write request is assessed, and the second level is written into the new data and is deposited
External memory amount of debris and readwrite performance after storing up equipment, obtain assessment result.
6. according to the method described in claim 5, it is characterized in that, assessing making for the new data for needing to be written in the write request
With value, comprising:
According to the read-write frequency for the new data for needing to be written in the write request, the use value of the new data is assessed.
7. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is held by processor
Method described in one of claim 1-6 is realized when row.
8. a kind of reading and writing data equipment, comprising: memory, processor and storage can be run on a memory and on a processor
Computer program, which is characterized in that the processor realizes method described in one of claim 1-6 when executing described program.
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| CN108984117B (en) | 2021-11-19 |
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Address after: 518000 2203/2204, Building 1, Huide Building, Beizhan Community, Minzhi Street, Longhua District, Shenzhen, Guangdong Patentee after: SHENZHEN AUDAQUE DATA TECHNOLOGY Ltd. Address before: 518000 units J and K, 12 / F, block B, building 7, Baoneng Science Park, Qinghu Industrial Zone, Qingxiang Road, Longhua New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN AUDAQUE DATA TECHNOLOGY Ltd. |