CN110427582A - The read method and device of file cache - Google Patents
The read method and device of file cache Download PDFInfo
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- CN110427582A CN110427582A CN201810399282.5A CN201810399282A CN110427582A CN 110427582 A CN110427582 A CN 110427582A CN 201810399282 A CN201810399282 A CN 201810399282A CN 110427582 A CN110427582 A CN 110427582A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/17—Details of further file system functions
- G06F16/172—Caching, prefetching or hoarding of files
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/957—Browsing optimisation, e.g. caching or content distillation
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Abstract
This application provides a kind of read method of file cache and devices.This method comprises: prediction user will carry out at least one operation, wherein it is described at least one operate any one application scenarios for starting electronic equipment；Determine at least one described corresponding hot spot blocks of files of operation；Before at least one described operation occurs, at least one described corresponding hot spot blocks of files of operation is read in caching.The application can accelerate the starting speed of the application scenarios of electronic equipment.
Description
Technical field
This application involves computer application technologies, and more particularly, to a kind of read method of file cache
And device.
Background technique
With the fast development of electronic equipment, the application journey of electronic equipment (for example, smart phone, smartwatch etc.) carrying
Sequence is more and more, so that the business scenario that the operating system of electronic equipment needs to carry is also more and more, and then electronics is caused to set
It is standby more with it is slower, more with the problem of blocking become increasingly conspicuous.And leading to the problem of the main reason for this is the limited object of electronic equipment
Reason memory can not carry infinite number of application program.
To solve the above-mentioned problems, traditional scheme generally use it is least recently used (Least Recently Used,
LRU) way to manage manages file cache, specifically, caches the file page of recent visit as far as possible, and preferentially release is minimum recently
The file page used, so that electronic equipment when starting application program, can transfer the phase of the application program from caching
File is closed, to accelerate the start-up course of application program.But LRU way to manage is departing from the true application scenarios of user, in reality
The effect is unsatisfactory in the application process of border.For example, when there is more hash in user's most recently used file cache,
Will cause useful file cache be eliminated out memory the case where, to cause the hit rate of file cache low, memory concussion, shadow
Ring user experience.
Summary of the invention
The application provides the read method and device of a kind of file cache, to accelerate the starting of the application scenarios of electronic equipment
Speed.
In a first aspect, provide a kind of read method of file cache, this method comprises: prediction user will carry out to
A few operation；Determining this, at least one operates corresponding hot spot blocks of files；Before at this, at least one operation occurs, extremely by this
Few one operates corresponding hot spot blocks of files and reads in caching.
At least one above-mentioned operation is the operation for starting the application scenarios of electronic equipment.
Specifically, the different operation of user can correspond to different application scenarios, and user can be realized by these operations
The unlatching of respective application scene.Therefore, at least one operation that above-mentioned prediction user will carry out is effectively equivalent to prediction can
The application scenarios that can occur, next can also predict user after having predicted corresponding application scenarios may carry out
Operation, or the operation that may directly can also be carried out to user predicts.
For example, it is above-mentioned at least one operation include drop-down notification bar, sliding notification bar to occur wechat message and click it is micro-
Letter, user can start wechat by these operations.
It should be understood that above-mentioned application scenarios specifically can be application program, it is also possible to a concrete scene of application program.
For example, above-mentioned application scenarios can be wechat, the click circle of friends being also possible in wechat.
Optionally, at least one corresponding hot spot blocks of files of operation of above-mentioned determination, comprising: determine at least one above-mentioned operation
The address information of corresponding hot spot blocks of files.
Optionally, address above mentioned information concrete form is [file, offset, page].
When the address information of hot spot blocks of files is [file, offset, page], text locating for representation of file hot spot blocks of files
Part, offset are the address of hot spot blocks of files relative to the plot of file or the offset of initial address, and page table shows hot spot text
The file page that part block is included.
Optionally, above-mentioned at least one corresponding hot spot blocks of files of operation by this is read in caching, comprising: according at least
At least one is operated corresponding hot spot blocks of files and read in caching by the address information of the corresponding hot spot blocks of files of one operation.
Specifically, the address information of corresponding hot spot blocks of files can be operated according at least one will at least one from disk
The corresponding hot spot blocks of files of a operation is read in caching.
It in the application, is predicted by the operation that will be carried out to user, and by the corresponding hot spot file of corresponding operating
Block is read in caching in advance, can accelerate the starting speed of the corresponding application scenarios of user's operation.
Optionally, at least one above-mentioned operation is all or part of operation with starting application scenarios.
In this application, it is preparatory that the corresponding hot spot blocks of files of the related part operation of some application scenarios can will both have been started
It reads in caching, the corresponding hot spot blocks of files of related with some application scenarios all operationss can also all be read in advance
In caching.
In some implementations, at least one operation that prediction user will carry out, comprising: obtain triggering message；Root
According to preset first corresponding relationship, the corresponding operation of message will be triggered and be determined as at least one above-mentioned operation.
Wherein, above-mentioned first corresponding relationship is used to indicate the operation of the different corresponding users of triggering message, specifically, on
State the first corresponding relationship can indicate triggering message and the operation of user between mapping relations, first corresponding relationship it is specific
The form that can be table, this table show different triggering message and the different corresponding users of triggering message
Operation.
Optionally, above-mentioned triggering message is for prompting user starts application scene.
Specifically, above-mentioned triggering message can be the message that some application program of electronic equipment receives, for example, the triggering
Message is news push message, and the news push message is for prompting user to open news client.For another example, which is
Wechat message, the wechat message is for prompting user's point to open wechat.
According to the corresponding relationship of triggering message and different operation, the operation that user will carry out can determine, so that
It is subsequent the corresponding hot spot blocks of files of operation that user carry out can be read in caching in advance, accelerate opening for application scenarios
Dynamic speed.
In some implementations, at least one operation that prediction user will carry out, comprising: practise depending on the user's operation
At least one operation that used prediction user will carry out.
Further, at least one operation that habit prediction user will carry out depending on the user's operation, comprising: obtain and use
The operating habit information at family；At least one operation that habits information prediction user will carry out depending on the user's operation.
The operating habit information of user can serve to indicate that user opens the habit of application scenarios, for example, user exists daily
Fixed time opens some application scenarios by certain mode of operation.It so, can basis when the fixed time will be reached
The operating habit of the user predicts user will open the application scenarios using which kind of mode of operation.
In some implementations, at least one above-mentioned corresponding hot spot blocks of files of operation includes multiple hot spot blocks of files,
At least one is operated corresponding hot spot blocks of files to read in caching, comprising: be performed simultaneously reading behaviour to multiple hot spot blocks of files
Make, wherein read operation includes multiple sub-stages, and each hot spot blocks of files in multiple hot spot blocks of files is respectively at read operation
Different sub-stages.
Since read operation includes multiple sub-stages, it can be same to different hot spot blocks of files in different sub-stages
Shi Zhihang read operation (is equivalent to and carries out parallel reading to different hot spot blocks of files), so as to improve hot spot blocks of files
Reading speed further decreases the starting time of application scenarios.
Optionally, above-mentioned multiple sub-stages include opening, positioning, reading to initiate and read response.
Each sub-stage in above-mentioned multiple sub-stages can correspond to a hot spot blocks of files.For example, the first hot spot file
Block, second hot area blocks of files, third hot spot blocks of files and the 4th hot spot blocks of files be respectively at the opening of read operation, positioning,
It reads to initiate and read response phase.
In some implementations, the above method further include: according to the system load of electronic equipment and at least one operation
The size determination of corresponding hot spot blocks of files prefetches strategy；At least one is operated into corresponding hot spot blocks of files and reads caching
In, comprising: at least one corresponding hot spot blocks of files of operation is read in caching according to strategy is prefetched.
The above-mentioned strategy that prefetches can specifically include quantity, the size of hot spot blocks of files etc. that each sub-stage needs to read
Deng.
It can be specified by the system load of electronic equipment and the size of hot spot blocks of files and reasonably prefetch strategy, it can
Improve the reading efficiency of hot spot blocks of files.
It is also conceivable to the size for the probability that each operation occurs when formulating and prefetching strategy, for example, some operation is rear
The raw probability of supervention is larger, it is possible to prefetch more hot spot blocks of files, if some operation subsequent generation probability compared with
It is small, it is possible to prefetch less hot spot blocks of files.
In some implementations, the system load of electronic equipment includes that the CPU occupation rate of electronic equipment, free memory are big
The waiting at least one of process caused by small and I/O.
In some implementations, the above method further include: obtain the historical data of electronic equipment, which includes
User's electronic equipment in different operations reads the hot spot blocks of files in caching；The operation of user is determined according to historical data
With the second corresponding relationship for reading the hot spot blocks of files in caching；Generating should be related to that corresponding second corresponding relationship is believed with second
Breath；Determine that at least one operates corresponding hot spot blocks of files, comprising: at least one operation is determined according to the second correspondence relationship information
Corresponding hot spot blocks of files.
Above-mentioned second corresponding relationship can indicate the operation and hot spot blocks of files corresponding relationship or mapping relations of user, should
The form that specifically can be table of first corresponding relationship, this table show different operations and different operations are right respectively
The hot spot blocks of files answered.
The operation of user and the corresponding relationship of hot spot blocks of files, Jin Erke can be relatively accurately determined by historical data
To determine that at least one operates corresponding hot spot blocks of files more conveniently according to the corresponding relationship.
Second aspect provides a kind of reading device of file cache, which includes for executing above-mentioned first aspect
And the module of the read method of the file cache in any one possible implementation in first aspect.
The third aspect provides a kind of reading device of file cache, which includes: memory, for storing program；
Processor and transceiver, wherein processor is used to execute the program of memory storage, and when program is performed, processor is used for
Execute the method in first aspect or its various implementation.
The reading device of file cache in the above-mentioned third aspect specifically can be electronic equipment, for example, smart phone,
PAD, smartwatch etc..
Fourth aspect, provides a kind of computer-readable medium, and the computer-readable medium storage is executed for equipment
Program code, said program code include the instruction for executing the method in first aspect or its various implementation.
5th aspect, provides a kind of computer program code, said program code include for execute first aspect or its
The instruction of method in various implementations.
Computer program code in above-mentioned 5th aspect can be the program code positioned at electronic equipment internal, the program
Code is performed the starting speed that can accelerate the application scenarios of electronic equipment.
Detailed description of the invention
Fig. 1 is the schematic flow chart of the read method of the file cache of the embodiment of the present application；
Fig. 2 is the schematic diagram of the hot spot blocks of files under determining wechat starting scene；
Fig. 3 is normal starting wechat and the contrast schematic diagram for prefetching starting wechat；
Fig. 4 is the schematic block diagram of the reading device of the file cache of the embodiment of the present application；
Fig. 5 is the schematic block diagram of the reading device of the file cache of the embodiment of the present application；
Fig. 6 is the schematic block diagram of the reading system of the file cache of the embodiment of the present application.
Specific embodiment
Below in conjunction with attached drawing, the technical solution in the application is described.
The read method of the file cache of the embodiment of the present application can be executed by electronic equipment, wherein electronic equipment tool
Body can be smart phone (especially Android mobile phone), personal digital assistant (Personal Digital Assistant,
PDA), tablet computer, vehicle-mounted computer etc. include the intelligent terminal of abundant display content.
Since LRU way to manage is departing from the real scene of user, cause the hit rate of file cache low, user experience
It is bad.Therefore, in order to more preferably carry out the reading of file cache, can first learn using the file opened during thermal starting, it will
These files store, and take out these pre-stored files when being again started up corresponding application next time, to accelerate
The start-up course of application.
But the mode of above-mentioned reading caching is that file is just carried out when the cold start-up of corresponding application program has occurred and that
The caching of granularity prefetches, and the execution opportunity of file cache compares rearward, in the case where certain complicated, the starting of the application
May be generated with foreground process and read competition, causes the starting time still longer, in addition, the granularity of cache prefetching is too
Greatly, a large amount of useless file pages be may result in be loaded, performance is caused to deteriorate.
Therefore, when carrying out the reading of file cache, next operation that user can be carried out can be first predicted, then
Hot spot blocks of files corresponding to next operation that user can be carried out is read in caching in advance, to carry out phase in user
It can accelerate the starting speed of application scenarios when the operation answered, improve user experience.
It is described in detail below with reference to read method of the Fig. 1 to Fig. 3 to the file cache of the embodiment of the present application.
Fig. 1 is the schematic flow chart of the reading of the file cache of the embodiment of the present application.
Method shown in FIG. 1 can be executed by electronic equipment, and method shown in FIG. 1 specifically includes step 101 to step
103, step 101 to step 103 is described in detail respectively below.
101, at least one operation that prediction user will carry out.
It is above-mentioned at least one operation can be user may to electronic equipment carry out operation, for example, it is above-mentioned at least one
Operation can be sliding electronic equipment screen, clicks the screen of electronic equipment and click certain figures at electronic device interface
Mark etc..
It should be understood that each operation both can only include individual part in the embodiment of the present application, also may include multiple dynamic
Make.The number for the movement that the application includes to single operation does not limit.For example, an operation is only acted comprising sliding screen,
Another operation include click notification bar and sliding notification bar to occur wechat message the two act.
For example, after receiving wechat message, user can execute following operation by taking smart phone as an example: sliding screen
Curtain to occur notification bar, slide into notification bar occur wechat message and click wechat message.Therefore, wechat is received again when next time
Sliding screen can be predicted next to execute when message and wechat message and point occur to notification bar occur, slide into notification bar
Hit the operation such as wechat message.
Similarly, after receiving Twitter message, user can execute following operation: sliding screen to notification bar, sliding are logical
Know column to occur Twitter message and click Twitter message.So, once electronic equipment receives Twitter message can predict to use
Family will probably execute sliding screen and grasp to notification bar, sliding notification bar to there is microwave message and click Twitter message etc.
Make.
At least one above-mentioned operation can be all operationss or part operation that user is used to open some application scenarios.
Specifically, at least one above-mentioned operation can be all operationss for opening wechat or part operation.For example, it is above-mentioned at least one
Operation can be sliding screen to occur notification bar, slide into notification bar occur wechat message and click wechat message, it is above-mentioned extremely
A few operation is also possible to slide screen to notification bar occur and slide into notification bar and wechat message occur.
Above-mentioned application scenarios can be application program, be also possible to a concrete scene of application program.For example, above-mentioned answer
It can be wechat with scene, the click circle of friends being also possible in wechat.
It should be understood that there are many modes of at least one operation of prediction user.
Optionally, predict that at least one operation of user specifically includes: habit is depending on the user's operation to predict user's
At least one operation.
Specifically, the operating habit information of user can be first obtained, is then come further according to the operating habit information of user pre-
Survey at least one operation that user will carry out.
The operating habit information of user can serve to indicate that user opens the habit of application scenarios, aforesaid operations habits information
The time that user opens application scenarios can be specifically included, used movement of application scenarios etc. is opened.
Specifically, user opens some application scenarios by certain mode of operation in fixed time daily.So, when will
When reaching the fixed time, user can be predicted according to the operating habit of the user to be opened using which kind of mode of operation
The application scenarios.For example, five thirty of user every afternoon can open chauffeur software on time, and user be by click screen and
The mode of chauffeur software (specifically can be the icon for clicking chauffeur software) is clicked to start chauffeur software, then, whenever general
When reaching 5 PM half, the next operation of user can be predicted as click screen and clicks chauffeur software, it is thus real
The prediction for the operation that next can be can be carried out to user is showed.
Optionally, at least one operation of user is predicted, comprising: obtain triggering message；According to the preset first corresponding pass
The corresponding operation of the triggering message is determined as at least one operation, wherein the first corresponding relationship is used to indicate different by system
Trigger the corresponding relationship of message and the operation of the user.
Wherein, above-mentioned first corresponding relationship is used to indicate the operation of the different corresponding users of triggering message.Specifically, on
State the first corresponding relationship can indicate triggering message and the operation of user between mapping relations, first corresponding relationship it is specific
The form that can be table, this table show different triggering message and the different corresponding users of triggering message
Operation.
For example, table 1 shows the corresponding relationship between the operation of different triggering message and user, represented by the table 1
Information can be known as the first corresponding relationship, can obtain the different operations for triggering the corresponding user of message by table 1.
Table 1
| Trigger message | The operation of user |
| Wechat message | Sliding screen to occur notification bar, slide into notification bar occur wechat message, click wechat message |
| Twitter message | It lights screen, solution lock screen, click Twitter message |
| … | … |
As shown in table 1, the directly corresponding relationship according to shown in table 1 can obtain difference after obtaining triggering message
Trigger the corresponding user's operation of message.
Above-mentioned triggering message can be the message of the application program push of electronic equipment, for example, above-mentioned triggering message can be with
It is the message of news client push, the message etc. of shopping application program push.In addition, above-mentioned triggering message is also possible to electronics
The message that the application program of equipment receives, for example, above-mentioned triggering message can be the wechat message received or microblogging disappears
Breath etc..
102, determine that at least one operates corresponding hot spot blocks of files.
The corresponding hot spot blocks of files of each operation can be needs when this operation occurs and be deployed into memory from disk
Blocks of files.
For an operation, the corresponding hot spot block of the operation can be to be needed to be deployed into from disk when the operation carries out
Master file block in caching.Specifically, for an operation, when repeatedly carrying out the operation, all it is deployed into memory
In blocks of files be the corresponding hot spot blocks of files of the operation.
For example, the first operation has carried out 10 times altogether, wherein carrying out that one will be transferred from disk when the first operation every time
Fixed blocks of files into caching, then, this 10 times carry out for the first time operation from be deployed into disk caching in blocks of files friendship
Collection is exactly the corresponding hot spot blocks of files of the first operation.
When determining at least one above-mentioned corresponding hot spot blocks of files of operation, can first obtain when each operation carries out from magnetic
Disk is deployed into the historical data of the blocks of files in caching, then determines hot spot corresponding to each operation further according to the historical data
Blocks of files (each to operate and the corresponding relationship of corresponding hot spot blocks of files) is next assured that at least one above-mentioned operation
Corresponding hot spot blocks of files.
Specifically, method shown in FIG. 1 further include: obtain the historical data of electronic equipment, which includes user
In different operations, electronic equipment reads the hot spot blocks of files in caching；The operation and reading of user are determined according to historical data
Get the second corresponding relationship of the hot spot blocks of files in caching；Corresponding second correspondence relationship information should be related to second by generating；
Determine that at least one operates corresponding hot spot blocks of files, comprising: at least one operation pair is determined according to the second correspondence relationship information
The hot spot blocks of files answered.
Above-mentioned second corresponding relationship can indicate the operation and hot spot blocks of files corresponding relationship or mapping relations of user, should
The form that specifically can be table of first corresponding relationship, this table show different operations and different operations are right respectively
The hot spot blocks of files answered.
The operation of user and the corresponding relationship of hot spot blocks of files, Jin Erke can be relatively accurately determined by historical data
To determine that at least one operates corresponding hot spot blocks of files more conveniently according to the corresponding relationship.
For example, table 2 shows the corresponding relationship between different operation and hot spot blocks of files, it should be appreciated that shown in table 2
The address information that specifically can be hot spot blocks of files of the expressions such as hot spot blocks of files 1, hot spot blocks of files 2.Information represented by table 2
It can be known as the second corresponding relationship, the corresponding hot spot blocks of files of different operation can be obtained by table 2.
Table 2
| The operation of user | Hot spot blocks of files |
| Sliding screen is to there is notification bar | Hot spot blocks of files 1, hot spot blocks of files 2 ... |
| It slides into notification bar and wechat message occurs | Hot spot blocks of files 3, hot spot blocks of files 4 ... |
| Click wechat message | Hot spot blocks of files 5, hot spot blocks of files 6, hot spot blocks of files 7 ... |
| … | … |
As shown in table 2, the corresponding relationship according to shown in table 2 can directly obtain the corresponding hot spot blocks of files of different operation.
103, before at least one operation occurs at this, at least one is operated into corresponding hot spot blocks of files and reads caching
In.
It in the application, is predicted by the operation that will be carried out to user, and by the corresponding hot spot file of corresponding operating
Block is read in caching in advance, can accelerate the starting speed of the corresponding application scenarios of user's operation.
By hot spot blocks of files from when being read in memory in disk, can be in order to accelerate the reading speed of hot spot blocks of files
Hot spot blocks of files is read using parallel form, specifically, the reading of blocks of files can be divided into several subprocess, In
Each subprocess can be carried out the read work of different hot spot blocks of files, that is, make the reading of different hot spot blocks of files can
The reading speed of hot spot blocks of files can be accelerated in different sub-stage progress.It is above-mentioned to be divided into the reading of blocks of files
Multiple sub-stages are properly termed as being classified so as to carry out the mechanism of different hot spot blocks of files prefetched in different sub-stages
Multiple prefetches mechanism.
Specifically, above-mentioned to incite somebody to action when at least one above-mentioned corresponding hot spot blocks of files of operation includes multiple hot spot blocks of files
At least one operates corresponding hot spot blocks of files and reads in caching, comprising: is performed simultaneously reading behaviour to multiple hot spot blocks of files
Make, wherein the read operation includes multiple sub-stages, and each hot spot blocks of files in multiple hot spot blocks of files is respectively at reading behaviour
The different sub-stages of work.
Since read operation includes multiple sub-stages, it can be same to different hot spot blocks of files in different sub-stages
Shi Zhihang read operation (is equivalent to and carries out parallel reading to different hot spot blocks of files), so as to improve hot spot blocks of files
Reading speed further decreases the starting time of application scenarios.
Optionally, above-mentioned multiple sub-stages specifically include: opening, positioning, read to initiate and read response.
For example, at least one above-mentioned operation corresponds to altogether 100 hot spot blocks of files, it is possible in opening, positioning, reading
It initiates and reads to respond the read operation that this four-stage carries out 4 hot spot blocks of files respectively, hot spot blocks of files can be greatly speeded up
Reading speed.
In the application, the read operation of hot spot blocks of files is divided into multiple stages, and (opening, positioning read to initiate, read to respond
Deng).The sometime point prefetched is executed for some user's scene, multiple files (correspondence) is had and is in file reading state,
But it is respectively at the different reading stages, they are reasonable and adequately occupy the assembly line of file reading, in traditional scheme
The mode for just carrying out next hot spot blocks of files after the reading for being fully finished a hot spot blocks of files is compared, and heat can be accelerated
The read operation of dot file block enables hot spot blocks of files quickly to read in caching from disk, after accelerating
The speed of continuous application scenarios starting.
In addition, in order to preferably read out the hot spot blocks of files of at least one above-mentioned operation from disk, it can also basis
The system load of electronic equipment and at least one size for operating corresponding hot spot blocks of files prefetch strategy to determine, next,
The read operation that strategy carries out hot spot blocks of files again is prefetched according still further to this.
Specifically, method shown in FIG. 1 further include: corresponding according to the system load of electronic equipment and at least one operation
The size determination of hot spot blocks of files prefetches strategy；At least one is operated corresponding hot spot blocks of files to read in caching, specifically
It include: to read in caching according to prefetching strategy at least one is operated corresponding hot spot blocks of files.
The above-mentioned strategy that prefetches can specifically include quantity, the size of hot spot blocks of files etc. that each sub-stage needs to read
Deng.
Optionally, the system load of electronic equipment includes the CPU occupation rate, free memory size and I/O of electronic equipment
The caused waiting at least one of process.
In the application, the size energy of corresponding hot spot blocks of files is operated at least one according to the system load of electronic equipment
Enough determinations reasonably prefetch strategy, can determine in the case where considering electronic apparatus system resource and reasonably prefetch strategy, energy
Enough improve the reading efficiency of hot spot blocks of files.
The read method of the file cache of the embodiment of the present application is carried out specifically so that wechat starts scene as an example below
It is bright.
Embodiment one: the reading of starting wechat scene hot spot blocks of files.
By taking user's scene of Android smartphone as an example, when user plays game while listening song, come suddenly
Item important wechat message, user click the message at once and open wechat, at this moment have higher probability will appear and need 3-4 seconds
The phenomenon that interface could be opened, very influence user experience.
In order to accelerate the starting speed of wechat, can be transferred using the read method of the file cache of the embodiment of the present application
The associated documents of wechat starting.Specifically, starting wechat mainly includes following main process:
Firstly, being learnt using the identification module with study to the corresponding hot spot blocks of files of each operation.
Specifically, the user behavior under wechat starting scene is divided into chronological order and comes wechat message, drop-down notice
Column, sliding notification bar are to there is wechat message, the click sub-stages such as wechat.Enter the blocks of files of each sub-stage in user every time
Reading when, can recognize that the scene by recording the File read operation of stage progress, and by multi-pass operation
Pre-read the file information, and store into database.Enable and difference is identified according to the information of storage in next stage
Operate corresponding hot spot blocks of files.
Secondly, reading the hot spot blocks of files in each stage of wechat starting according to the information of study in wechat cold start-up.
Specifically, when can identify wechat starting according to the pre-read the file information of the scene stored in previous step
The corresponding hot spot blocks of files of each sub-stage (each sub-stage corresponds to different operations), following wechat is cold-started scene
When, scene pre-read the file information can be read from pre-read file information data library before.
Since the backstage load that wechat starts user under scene is very heavy, so IO poor performance, high probability will appear micro-
Time-consuming by the IO of letter cold start-up, therefore pre-reads quota in the forward portion adjustment of wechat cold start-up sub-stage to increase the dynamics of pre-reading
To ensure effect.Coming wechat message, drop-down notification bar, sliding into the quota for the stages such as wechat occur to rise, clicked with mitigating
A large amount of I O reads are broken out when wechat.According to each stage quota adjusted, by hot spot block size, load probability, operation time-consuming etc.
Index arranges the file operation sequence in each stage, that is, prefetches strategy.
Finally, carrying out prefetching for hot spot blocks of files according to multiple mechanism is classified.
When executing file and prefetching, can ensure stable pre-fetch amount in each stage, and each stage prefetched all
It can smoothly perform.For example, part pre-read file initiates open, fstat, mmap when receiving wechat message, identify completely
Critical file is directly initiated read and is operated later, reach in advance, precisely, the completion file read-write of high speed, greatly improvement user
The performance of this scene.
The hot spot blocks of files of each sub-stage is determined in embodiment one and formulates the hot spot blocks of files of each sub-stage
Prefetch strategy process it is as shown in Figure 2.
The first row in Fig. 2 shows multiple operations, and perhaps the multiple operation of sub-stage or sub-stage specifically include: coming
Wechat message, sliding screen to occur notification bar, sliding notification bar to occur wechat message and click wechat message.Each behaviour
Make or the corresponding pre-read file data collection of sub-stage is as shown in the second row in Fig. 2, by being pre-read to shown in the second row of Fig. 2
File data collection is taken to be learnt, the corresponding pre-read file of each sub-stage shown in available Fig. 2 the third line.
Wherein, pre-read file data collection, which may include, repeatedly carries out each operation or each sub-stage is corresponding pre-reads
File is taken, common pre-read file can be gone out from pre-read file data focusing study by study, to obtain each behaviour
Work or the corresponding pre-read file of each sub-stage.
Learn to each operation perhaps each sub-stage it is corresponding prefetch after file can operate for each or
The corresponding pre-read file of each sub-stage pre-reads strategy to formulate.This, which prefetches strategy, may include the size of the blocks of files prefetched
With the address of blocks of files etc..The each sub-stage formulated in embodiment one prefetches strategy as shown in Fig. 2 fourth line, wherein
Carry out wechat message, sliding screen arrives that the total amount of notification bar and the click wechat message file to be prefetched occur be 20MB, and slide
Dynamic notification bar to the total amount for the file that wechat message to be prefetched occur be 30MB, in addition, Fig. 2 fourth line also shows each sub- rank
Pre-reading for section gives the address for the file for needing the file read and needs to read in strategy.
Specifically, the size of blocks of files for needing to read when Lai Weixin message is 20MB, need open file be f1 and
F2 etc., that need to carry out map operation is f1 and f3 etc.；Screen is slided to the size for the blocks of files that notification bar needs to read occur
For 20MB, needing open file is f3 and f4 etc., and that carry out reading initiation is f2 (10,100) and f3 (0,200) etc.；It is sliding
Dynamic notification bar is 30MB to the size for the blocks of files that wechat message needs to read occur, and needing open file is f5 and f7, is needed
That carry out reading initiation is f3 (30,700) and f4 (0,600) etc.；Clicking wechat message needs the size of blocks of files read to be
20MB, needing to carry out demapping/shutoff operation is f2 (10,100) and f3 (0,200) etc..Wherein, f2 (10,100) are executed
It reads to initiate to indicate to read 100 file pages since the address of file f 2 10.
In example 1, wechat can accurately be identified by the read method of the file cache of the embodiment of the present application
Required hot spot blocks of files when starting the hot spot file page to wechat can carry out in advance in advance in next starting wechat
It takes, prepares in advance, improve the hit rate of caching, to reduce the time of starting, promote user experience.
Fig. 3 shows the effect that the read method of the file cache of the embodiment of the present application is applied to the scene of wechat starting
Figure.Caching is read by the hot spot blocks of files in each operating process for starting wechat in advance as shown in figure 3, prefetching starting
In (hot spot blocks of files required for specifically starting prepares in advance, and carries out sequential access, in corresponding diagram 3 prefetch into
Journey), compared with the normal boot process of application, the starting of application can be completed using the less time.
It is described in detail above in association with read method of the Fig. 1 to Fig. 3 to the file cache of the embodiment of the present application, under
Face combines Fig. 4 and Fig. 5 that the reading device of the file cache of the embodiment of the present application is described.It should be understood that Fig. 4 and Fig. 5 are retouched
The reading device for the file cache stated is able to carry out each step of the read method of file cache shown in Fig. 1 to Fig. 3, is
It is succinct, repetitive description is suitably omitted when describing Fig. 4 and device shown in fig. 5 below.
Fig. 4 is the schematic block diagram of the reading device of the file cache of the embodiment of the present application.Device 200 shown in Fig. 4 has
Body includes:
Prediction module 201, at least one operation that will be carried out for predicting user, wherein at least one described operation
For starting the application scenarios of electronic equipment；
Determining module 202, for determining at least one described corresponding hot spot blocks of files of operation；
Read module 203, for before at least one described operation occurs, at least one to operate corresponding heat by described in
Dot file block is read in caching.
In the application, the reading device of file cache is predicted by the operation that will be carried out to user, and will be corresponding
It operates corresponding hot spot blocks of files to read in caching in advance, the starting speed of the corresponding application scenarios of user's operation can be accelerated
Degree.
Optionally, as one embodiment, the prediction module 201 is specifically used for: obtaining triggering message；According to preset
The corresponding operation of the triggering message is determined as at least one described operation, wherein described first is corresponding by the first corresponding relationship
Relationship is used to indicate the corresponding relationship of the operation of different triggering message and the user.
Optionally, as one embodiment, at least one described corresponding hot spot blocks of files of operation is multiple hot spot files
Block, the read module 203 are specifically used for: being performed simultaneously read operation to the multiple hot spot blocks of files, wherein the read operation
Including multiple sub-stages, each hot spot blocks of files in the multiple hot spot blocks of files is respectively at difference of the read operation
Stage.
Optionally, as one embodiment, the multiple sub-stage includes opening, positioning, reading to initiate and read response.
Optionally, as one embodiment, the determining module 202 is also used to the system load according to the electronic equipment
Determined at least one described size for operating corresponding hot spot blocks of files and prefetch strategy, it is described prefetch strategy be used to indicate it is described
The size or quantity for the hot spot blocks of files that at least one operation needs to prefetch；The read module 203 is specifically used for according to institute
State prefetch strategy by it is described at least one operate corresponding hot spot blocks of files and read in caching.
Optionally, as one embodiment, the system load of the electronic equipment includes that the CPU of the electronic equipment occupies
The waiting at least one of process caused by rate, free memory size and I/O.
Optionally, as one embodiment, described device 200 further include: study module 204, the study module 204 have
Body is used for: obtaining the historical data of the electronic equipment, the historical data includes user's electronics in different operations
Equipment reads the hot spot blocks of files in caching；The operation of user is determined according to the historical data and reads the heat in caching
Second corresponding relationship of dot file block；Corresponding second correspondence relationship information should be related to described second by generating；The determining mould
Block 202 is specifically used for: determining at least one described corresponding hot spot blocks of files of operation according to second correspondence relationship information.
Fig. 5 is the schematic block diagram of the reading device of the file cache of the embodiment of the present application.Device 300 shown in fig. 5 has
Body includes:
Memory 301, for storing program；
Processor 302, for executing the program stored in memory 301, when the program in memory 301 is performed,
Processor 302 is specifically used for: at least one operation that prediction user will carry out, wherein at least one described operation is for opening
The application scenarios of dynamic electronic equipment；Determine at least one described corresponding hot spot blocks of files of operation；In at least one described operation
Before generation, at least one described corresponding hot spot blocks of files of operation is read in caching.
In the application, the reading device of file cache is predicted by the operation that will be carried out to user, and will be corresponding
It operates corresponding hot spot blocks of files to read in caching in advance, the starting speed of the corresponding application scenarios of user's operation can be accelerated
Degree.
Wherein, the processor 302 in above-mentioned apparatus 300 is equivalent to prediction module 201, determining module 202 in device 200
And read module 203.
Above-mentioned apparatus 200 and device 300 specifically can be electronic equipment.When device 300 is electronic equipment, processor
302 specifically can be the central processing unit (Central Processing Unit, CPU) of electronic equipment.
It is described in detail below in conjunction with reading system of the attached drawing 6 to the file cache of the embodiment of the present application.Ying Li
Solution, the reading system of file cache shown in fig. 6 are able to carry out the read method of the file cache of the embodiment of the present application.In addition,
The reading system of the file cache of the embodiment of the present application specifically may operate in the internal intelligent operation such as smart machine, server
System platform software.
Fig. 6 shows the schematic block diagram of the reading system of the file cache of the embodiment of the present application.File shown in fig. 6 is slow
The reading system deposited is in smart machine according to level, in the operating system in server.When operation answering on an operating system
When with starting, need operating system from corresponding file is transferred in disk into caching, to realize the starting of application.Shown in Fig. 6
The reading system of file cache be divided by function as event acquisition subsystem, scene Recognition subsystem, prefetch policy development
Subsystem and prefetch executive subsystem.The subsystems in the reading system of file cache are described in detail below.
Event acquisition subsystem acquisition event can be the various operations of user, the variation of equipment state (such as bright screen and
Put out screen), the switching of equipment front and back application program etc..
Event acquisition subsystem internal includes scene event pitching pile module.It specifically, can be in the original figure of operating system
Shape, window in Event Subsystem (Graphics Windowing and Events Subsystem, GWES) system, are increased newly and are used
Family scene pitching pile module.User's scene pitching pile module is responsible for the user's scene issued from the event manager module of original GWES
Related pitching pile (be equivalent to and make marks to the certain events acquired in Event Subsystem), and the scene event transparent transmission that pitching pile is obtained
To scene recognition subsystem, the identification to concrete scene is completed by scene Recognition subsystem, have identified corresponding scene it
Next operation that user will carry out can be predicted afterwards.
Scene Recognition subsystem is further divided into following functional module, the specific function of each functional module according to function
It can be as follows:
Scene pre-identification module, for the customer incident according to scene event pitching pile module, binding time, foreground application,
The factors such as user's habit, the relevant each sub-stage of pre-identification scene.
Wherein, user's scene can be refined as multiple stages according to the time series of user's operation, and need comprising into
Stage before entering scene, to predict scene.The scene results of scene pre-identification module Forecasting recognition, can pass to scene first
Hot spot blocks of files acquisition module generates data set for it.Then, after scene hot spot blocks of files identifies successfully, so that it may by field
Scape pre-identification result issues policy development subsystem, generates strategy for it.
The relevant each sub-stage of above-mentioned scene pre-identification module pre-identification scene is equivalent to prediction user above
The operation that will carry out,
Scene hot spot blocks of files acquisition module, the scene sub-stage sent for receiving scene pre-identification module, and adopt
Collect, record the data of this stage hot spot blocks of files.
Furthermore it is possible to hot spot blocks of files be refine to the particle of file page, including the information such as [file, offset, page].It is passing through
Multi collect is crossed, after obtaining enough document scene hot spot data collection, data set is passed into the identification of scene hot spot blocks of files
Module identifies scene hot spot for it.
Scene hot spot blocks of files identification module, the document scene block for being provided according to scene hot spot blocks of files acquisition module
Hot spot data collection identifies scene hot spot blocks of files according to recognizer (pressing file block size, load ratio sequence etc.), and
Recognition result is sent to scene hot spot blocks of files memory module.Scene hot spot file block message is the heat of each sub-stage of scene
Dot file block message queue.
Scene hot spot blocks of files memory module is responsible for receiving the hot spot block message of scene hot spot blocks of files identification module, and
Persistent storage is to database.Database includes but is not limited to local disk, memory database and cloud database.
Policy development subsystem is prefetched, is responsible for after scene hot spot blocks of files has stored, receives the scene of scene pre-identification
Critical event, in conjunction with system resource loading condition, the correspondence for formulating this scene prefetches strategy.Scene event includes but is not limited to
[application+interface+behavior], prefetching strategy includes [scene sub-stage]+[hot spot blocks of files]+[prefetching sub-stage].
Policy development subsystem is prefetched to include system resource remained capacity module and prefetch policy development module.Wherein, it provides
Source remained capacity module is used to acquire the system resource load (CPU/MEM/IO etc.) of operating system, and assessment system load pressure
Grade.And system resource load pressure grade informing is prefetched into policy development module.
Policy development module is prefetched, for original scene hot spot file block message in reading database, and according to system
The hot spot blocks of files of resource load pressure rating, adjustment each sub-stage of scene loads quota, and the file cache for making this is pre-
Take strategy.
Executive subsystem is prefetched, prefetching for multistage, concurrent hot spot block is carried out after receiving determining strategy.It is so-called more
Grade prefetches and a secondary hot spots blocks of files is prefetched including multiple ranks: opening, positioning, reads to initiate, read response etc..It is so-called concurrent
It prefetches, is exactly the pre- extract operation that at a time may be performed simultaneously the different stage of multiple hot spot blocks of files.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
Scope of the present application.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) execute each embodiment the method for the application all or part of the steps.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), arbitrary access are deposited
The various media that can store program code such as reservoir (Random Access Memory, RAM), magnetic or disk.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application should be based on the protection scope of the described claims.
Claims (14)
1. a kind of read method of file cache characterized by comprising
At least one operation that prediction user will carry out, wherein at least one described operation is for starting answering for electronic equipment
Use scene；
Determine at least one described corresponding hot spot blocks of files of operation；
Before at least one described operation occurs, at least one described corresponding hot spot blocks of files of operation is read into caching
In.
2. the method as described in claim 1, which is characterized in that at least one operation of the prediction user, comprising:
Obtain triggering message；
According to preset first corresponding relationship, the corresponding operation of the triggering message is determined as at least one described operation,
In, first corresponding relationship is used to indicate the corresponding relationship of the operation of different triggering message and the user.
3. method according to claim 1 or 2, which is characterized in that it is described at least one operate corresponding hot spot blocks of files and be
Multiple hot spot blocks of files, it is described to read at least one described operation corresponding hot spot blocks of files in caching, comprising:
Read operation is performed simultaneously to the multiple hot spot blocks of files, wherein the read operation includes multiple sub-stages, the multiple
Each hot spot blocks of files in hot spot blocks of files is respectively at the different sub-stages of the read operation.
4. method as claimed in claim 3, which is characterized in that the multiple sub-stage includes opening, positioning, reading to initiate and read
Response.
5. such as method of any of claims 1-4, which is characterized in that the method also includes:
It is determined according to the system load of the electronic equipment and at least one described size for operating corresponding hot spot blocks of files pre-
Take strategy, the size or number for prefetching strategy and being used to indicate the hot spot blocks of files that at least one described operation needs to prefetch
Amount；
It is described to read at least one described operation corresponding hot spot blocks of files in caching, comprising: to prefetch strategy according to described
At least one described corresponding hot spot blocks of files of operation is read in caching.
6. method as claimed in claim 5, which is characterized in that the system load of the electronic equipment includes the electronic equipment
CPU occupation rate, the waiting at least one of process caused by free memory size and I/O.
7. such as method of any of claims 1-6, which is characterized in that the method also includes:
The historical data of the electronic equipment is obtained, the historical data includes user's electronic equipment in different operations
Read the hot spot blocks of files in caching；
The operation of user and the second corresponding relationship for reading the hot spot blocks of files in caching are determined according to the historical data；
Corresponding second correspondence relationship information should be related to described second by generating；
At least one operates corresponding hot spot blocks of files described in the determination, comprising:
At least one described corresponding hot spot blocks of files of operation is determined according to second correspondence relationship information.
8. a kind of reading device of file cache characterized by comprising
Prediction module, at least one operation that will be carried out for predicting user, wherein at least one described operation is for starting
The application scenarios of electronic equipment；
Determining module, for determining at least one described corresponding hot spot blocks of files of operation；
Read module, for before at least one described operation occurs, at least one to operate corresponding hot spot file by described in
Block is read in caching.
9. device as claimed in claim 8, which is characterized in that the prediction module is specifically used for:
Obtain triggering message；
According to preset first corresponding relationship, the corresponding operation of the triggering message is determined as at least one described operation,
In, first corresponding relationship is used to indicate the corresponding relationship of the operation of different triggering message and the user.
10. device as claimed in claim 8 or 9, which is characterized in that it is described at least one operate corresponding hot spot blocks of files and be
Multiple hot spot blocks of files, the read module are specifically used for:
Read operation is performed simultaneously to the multiple hot spot blocks of files, wherein the read operation includes multiple sub-stages, the multiple
Each hot spot blocks of files in hot spot blocks of files is respectively at the different sub-stages of the read operation.
11. device as claimed in claim 10, which is characterized in that the multiple sub-stage include open, positioning, read initiate and
Read response.
12. the device as described in any one of claim 8-11, which is characterized in that the determining module is also used to according to
The system load of electronic equipment and at least one described size determination for operating corresponding hot spot blocks of files prefetch strategy, described pre-
Strategy is taken to be used to indicate the size or quantity of the hot spot blocks of files that at least one described operation needs to prefetch；
The read module according to specifically for prefetching strategy for the corresponding hot spot blocks of files reading of at least one described operation
It gets in caching.
13. device as claimed in claim 12, which is characterized in that the system load of the electronic equipment includes that the electronics is set
The waiting at least one of process caused by standby CPU occupation rate, free memory size and I/O.
14. the device as described in any one of claim 8-13, which is characterized in that described device further include:
Study module, the study module are specifically used for:
The historical data of the electronic equipment is obtained, the historical data includes user's electronic equipment in different operations
Read the hot spot blocks of files in caching；
The operation of user and the second corresponding relationship for reading the hot spot blocks of files in caching are determined according to the historical data；
Corresponding second correspondence relationship information should be related to described second by generating；
The determining module is specifically used for:
At least one described corresponding hot spot blocks of files of operation is determined according to second correspondence relationship information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399282.5A CN110427582A (en) | 2018-04-28 | 2018-04-28 | The read method and device of file cache |
| PCT/CN2019/084476 WO2019206260A1 (en) | 2018-04-28 | 2019-04-26 | Method and apparatus for reading file cache |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399282.5A CN110427582A (en) | 2018-04-28 | 2018-04-28 | The read method and device of file cache |
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| CN110427582A true CN110427582A (en) | 2019-11-08 |
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| WO (1) | WO2019206260A1 (en) |
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| CN115079959A (en) * | 2022-07-26 | 2022-09-20 | 荣耀终端有限公司 | File management method and device and electronic equipment |
| CN115883910A (en) * | 2022-12-27 | 2023-03-31 | 天翼云科技有限公司 | Progressive elastic caching method and device for fragmented video acceleration |
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