CN106951488A - A kind of log recording method and device - Google Patents
A kind of log recording method and device Download PDFInfo
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- CN106951488A CN106951488A CN201710147943.0A CN201710147943A CN106951488A CN 106951488 A CN106951488 A CN 106951488A CN 201710147943 A CN201710147943 A CN 201710147943A CN 106951488 A CN106951488 A CN 106951488A
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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
- G06F16/10—File systems; File servers
- G06F16/18—File system types
- G06F16/1805—Append-only file systems, e.g. using logs or journals to store data
- G06F16/1815—Journaling file systems
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Abstract
The invention provides a kind of log recording method and device.It is related to log management field；Solve the problem of system processing power is low.This method includes：For journal file write-in task distribution buffer queue group, the buffer queue group includes at least two buffer queues；At least one buffer queue in the buffer queue group is selected as current cache queue；By the journal file in the daily record data write-in disk in the current cache queue, while the buffer queue in the buffer queue group in addition to the current cache queue obtains daily record data to be written.The technical scheme that the present invention is provided is applied to high concurrent daily record and reads and writes environment, realizes the daily record data caching write-in of efficient parallel.
Description
Technical field
The present invention relates to log management field, more particularly to a kind of log recording method and device.
Background technology
In daily exploitation, the record of daily record is essential.Entering row write daily record to same file can only single thread
Go write, it will usually ensured using simple lock (lock) current time only one of which thread to same journal file carry out
Write operation, so as to ensure the correctness of daily record output.But the shortcoming of this mode is it is also obvious that be exactly system in high concurrent
In the case of, efficiency can be very poor.Systematic function bottleneck is easily lead to, system processing power is reduced.
The decline of system processing power is avoided even with the processing mode of multithreading, but daily record note is write in multithreading
When record, because log recording needs to interact with magnetic disc i/o, the time that single thread takes lock is caused to lengthen, so as to lead
Obstruction and the wait of a large amount of threads are caused, the disposal ability of system is reduced.
The content of the invention
Present invention seek to address that problem as described above.
According to the first aspect of the invention, a kind of log recording method, including：
For journal file write-in task distribution buffer queue group, the buffer queue group includes at least two buffer queues；
At least one buffer queue in the buffer queue group is selected as current cache queue；
By the journal file in the daily record data write-in disk in the current cache queue, while the buffer queue group
In buffer queue in addition to the current cache queue obtain daily record data to be written.
It is preferred that, the journal file that the daily record data in the current cache queue is write in disk, while described slow
Depositing the acquisition of the buffer queue in set of queues in addition to current cache queue daily record data to be written includes：
I/O threads are created, write-in of the daily record data in the current cache queue into journal file are carried out, in write-in
Period adds synchrolock to the journal file, and the synchrolock is released after the completion of write-in；
Logic thread is created, the buffer queue in the buffer queue group in addition to the current cache queue is carried out to be written
The acquisition of the daily record data entered.
It is preferred that, this method also includes：
After the completion of daily record data in the current cache queue all writes, selected again from the buffer queue group
Select current cache queue.
It is preferred that, this method also includes：
Daily record data of the logic thread in the current cache queue all after the completion of write-in, is reselected current
Before buffer queue is completed, synchrolock is added in the acquisition to daily record data to be written.
It is preferred that, this method also includes：
Task is write for multiple journal files, is that each journal file write-in task distributes corresponding buffer queue respectively
Group.
According to another aspect of the present invention, a kind of log recording apparatus, including：
Queue generation module, for distributing buffer queue group for journal file write-in task, the buffer queue group is included
At least two buffer queues；
Control module, for selecting at least one buffer queue in the buffer queue group as current cache queue；
Management module is read and write, for the journal file for writing the daily record data in the current cache queue in disk,
The buffer queue in the buffer queue group in addition to the current cache queue obtains daily record data to be written simultaneously.
It is preferred that, the read-write management module includes：
First thread administrative unit, for creating I/O threads, carries out daily record data in the current cache queue to day
Write-in in will file, adds synchrolock to the journal file in address period, the synchrolock is released after the completion of write-in；
Second thread-management unit, for creating logic thread, carries out removing the current cache in the buffer queue group
Acquisition of the buffer queue to daily record data to be written outside queue.
It is preferred that, the control module, being additionally operable to the daily record data in the current cache queue, all write-in is completed
Afterwards, current cache queue is reselected from the buffer queue group.
It is preferred that, the queue generation module is additionally operable to write task for multiple journal files, is each journal file
Write-in task distributes corresponding buffer queue group respectively.
It is journal file write-in task distribution buffer queue group the invention provides a kind of log recording method and device,
The buffer queue group includes at least two buffer queues, selects at least one buffer queue conduct in the buffer queue group
Current cache queue, the journal file that the daily record data in the current cache queue is write in disk, while the caching
Buffer queue in set of queues in addition to the current cache queue obtains daily record data to be written, with Double buffer queue or more slow
The form for depositing queue is divided the work, data cached to be carried out with write-in data syn-chronization, realizes the daily record data caching of efficient parallel
Write-in, solves the problem of system processing power is low.
The following description for exemplary embodiment is read with reference to the drawings, other property features of the invention and advantage will
It is apparent from.
Brief description of the drawings
The accompanying drawing for being incorporated into specification and constituting a part for specification shows embodiments of the invention, and with
Description is used for the principle for explaining the present invention together.In the drawings, similar reference is used to represent similar key element.Under
Accompanying drawing in the description of face is some embodiments of the present invention, rather than whole embodiments.Come for those of ordinary skill in the art
Say, on the premise of not paying creative work, other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 schematically illustrates a kind of log recording method flow of the offer of embodiments of the invention one；
Fig. 2 schematically illustrates a kind of structure of log recording apparatus of the offer of embodiments of the invention two.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Need
Illustrate, in the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
Either, there is the problem of system treatment effeciency is low in the journal file writing mode of single thread or multithreading.
In order to solve the problem, The embodiment provides a kind of log recording method and device.Below in conjunction with the accompanying drawings, to this hair
Bright embodiment is described in detail.
First with reference to accompanying drawing, embodiments of the invention one are illustrated.
The embodiments of the invention provide a kind of log recording method, using this method, the premise of reliability can ensured
Under effectively improve journal file write efficiency.Using this method complete log recording flow as shown in figure 1, including：
Step 101, for journal file write-in task distribution buffer queue group, the buffer queue group comprising at least two delay
Deposit queue；
In this step, it is first journal file write-in task distribution buffer queue group, is configured with multiple in buffer queue group
Buffer queue.In general applied environment, many configuration modes that two buffer queues are included using a buffer queue group.
Task is write for multiple journal files, is that each journal file write-in task distributes corresponding buffer queue respectively
Group.
Hereinafter, illustrated so that every group includes two buffer queues as an example.In this step, multigroup buffer queue group is created
(buffer queue group is Double buffer), is that each user distributes one group of buffer queue.
At least one buffer queue in step 102, the selection buffer queue group is used as current cache queue；
In this step, current cache queue, current cache queue are used as from one buffer queue of selection in caching set of queues
As it is responsible for data and writes daily record data to the buffer queue of disk, other buffer queues in addition to current cache queue is responsible for connecing
Receive the daily record data of disk to be written.Can be according to preset screening rule, be stored with daily record data from the buffer queue group
Buffer queue in select at least one buffer queue as current cache queue.Screening rule can determine according to application scenarios,
As selection the more buffer queue of log cache data as current cache queue or by available cache memory queue with the shape of list
After formula is presented, user instruction is received, current cache queue is determined according to user instruction.
Specifically, buffer queue can be realized in the form of log buffer list.For example, creating buffer queue group, day is included
Will cache list Buffer A and log buffer list Buffer B, and specify the log buffer list being being currently used.
Step 103, the journal file for writing the daily record data in the current cache queue in disk, while described slow
Deposit the buffer queue in set of queues in addition to the current cache queue and obtain daily record data to be written；
In this step, part buffer queue in buffer queue group carries out daily record data journal file into disk and write
Enter, another part buffer queue obtains daily record data to be written, the data daily record to be written with continuing acquisition is write to disk
Data are carried out parallel by different threads, substantially increase journal file write efficiency.
In this step, it is preferred that thread is respectively configured for two buffer queues：
I/O threads are created, write-in of the daily record data in the current cache queue into journal file are carried out, in write-in
Period adds synchrolock to the journal file；
Logic thread is created, the buffer queue in the buffer queue group in addition to the current cache queue is carried out to be written
The acquisition of the daily record data entered.
Still illustrated exemplified by including two buffer queues in a buffer queue group, one in two buffer queues
It is used for reading to logic thread, another is responsible for writing to I/O threads.
Daily record data is added to the ArrayList being being currently used as a StringBuffer<
StringBuffer>In A, another is then idle.
Current journal file lock synchronously, the day for being currently needed for carrying out output caching is obtained according to condition judgment
Will cache list, carries out the caching write-in of journal file.
Need to add synchrolock during each write buffer queue of I/O threads, but logic thread is to add reading queue
Lock.
When having multiple threads to carry out log recording, it would be desirable to which the daily record data of write-in is first stored in responsible write-in
Buffer queue among, the thread that logic is read then is set to non-blocking fashion.The queue that now logic is read begins to work.
After the data for the buffer queue that himself is read in the thread read when logic, the buffer queue that logic is read and responsible write-in
Buffer queue is swapped.
After the completion of step 104, the daily record data in the current cache queue all write, from the buffer queue group
In reselect current cache queue；
In this step, after the completion of the daily record data in current cache queue writes to disk, just from the buffer queue
Current cache queue is reselected in group, is new current cache team by other buffer queue selections for being cached with daily record data
Row, the daily record data in new current cache queue is continued to write to disk；And a upper current cache queue then continues to obtain
Take daily record data to be written.By such alternating, continual data write-in is realized.
Still illustrated exemplified by including two buffer queues in a buffer queue group, after logic thread runs through queue
The buffer queue of the buffer queue of oneself and I/O threads can mutually be exchanged.Logic thread is also required to addition when exchanging queue
Synchrolock, after the completion of both the daily record data in the current cache queue all writes, reselects current cache queue complete
Into before, synchrolock is added in the acquisition to daily record data to be written.
, can be by currently used ArrayList after the daily record data in internal memory is output to disk file<Buffer>A with
Idle ArrayList<Buffer>B carries out the exchange of role.Idiographic flow is as follows：
If obtain current that daily record data is being write into caching is ArrayList<Buffer>A, then
ArrayList<Buffer>A is converted to write-in disk buffering.So as to by idle ArrayList<Buffer>B is converted to
Continue to the cache list of daily record data write-in.Idle ArrayList after exchange<Buffer>B will receive daily record data,
And the ArrayList of content is had been written into before<Buffer>A is then used for outputting log file to disk storage.
The big I for the buffer area that log buffer list takes is adjusted according to the data volume size being related in task, such as
Fruit buffer area very little, just more can processing data in time, but handling capacity and probability that resource contention occur will increase therewith；
Buffer area sets larger then effect opposite.
It is preferred that, maximum size can be set to buffer area, after the data volume that buffer area is stored exceedes the upper limit, then connect
The data received will abandon and be not inserted into log buffer list.
Journal file in cache list A is output to disk, memory size triggering and refresh interval triggering is supported
Write disk file.
The interaction of Double buffer list can avoid each journal file from influenceing the reception of new daily record data when being output to disk
And multithreading is the problem of lock.
It is to support a variety of way of outputs that journal file, which is output to disk, can trigger write operation according to time interval, also may be used
To go size to trigger write operation according to memory buffer.
Below in conjunction with the accompanying drawings, embodiments of the invention two are illustrated.
The embodiments of the invention provide a kind of log recording apparatus, a kind of day that can be provided with embodiments of the invention one
Will recording method is combined, and carries out efficient journal file write-in, the structure of the device as shown in Fig. 2 including：
Queue generation module 201, for distributing buffer queue group, the buffer queue group bag for journal file write-in task
Containing at least two buffer queues；
Control module 202, for selecting at least one buffer queue in the buffer queue group as current cache team
Row；
Management module 203 is read and write, for the daily record data in the current cache queue to be write to the daily record text in disk
Part, while the buffer queue in the buffer queue group in addition to the current cache queue obtains daily record data to be written.
It is preferred that, the read-write management module 203 includes：
First thread administrative unit 2031, for creating I/O threads, carries out the daily record data in the current cache queue
Write-in into journal file, synchrolock is added in address period to the journal file；
Second thread-management unit 2032, for creating logic thread, is carried out in the buffer queue group except described current
Acquisition of the buffer queue to daily record data to be written outside buffer queue.
It is preferred that, the control module 202 is additionally operable to the daily record data in the current cache queue and all write
Cheng Hou, current cache queue is reselected from the buffer queue group.
It is preferred that, the queue generation module 201 is additionally operable to write task for multiple journal files, is each daily record
File write-in task distributes corresponding buffer queue group respectively.
It is journal file write-in task distribution caching The embodiment provides a kind of log recording method and device
Set of queues, the buffer queue group includes at least two buffer queues, selects at least one caching in the buffer queue group
Queue is as current cache queue, the journal file that the daily record data in the current cache queue is write in disk, simultaneously
Buffer queue in the buffer queue group in addition to the current cache queue obtains daily record data to be written, with Double buffer team
The form of row or many buffer queues is divided the work, data cached to be carried out with write-in data syn-chronization, realizes the daily record of efficient parallel
Data buffer storage writes, and solves the problem of system processing power is low.
Descriptions above can combine implementation individually or in a variety of ways, and these variants all exist
Within protection scope of the present invention.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or to which part technical characteristic progress equivalent；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (9)
1. a kind of log recording method, it is characterised in that including：
For journal file write-in task distribution buffer queue group, the buffer queue group includes at least two buffer queues；
At least one buffer queue in the buffer queue group is selected as current cache queue；
By the journal file in the daily record data write-in disk in the current cache queue, while being removed in the buffer queue group
Buffer queue outside the current cache queue obtains daily record data to be written.
2. log recording method according to claim 1, it is characterised in that by the daily record number in the current cache queue
According to the journal file in write-in disk, while the buffer queue in the buffer queue group in addition to the current cache queue is obtained
Daily record data to be written includes：
I/O threads are created, write-in of the daily record data in the current cache queue into journal file are carried out, in address period
Synchrolock is added to the journal file, the synchrolock is released after the completion of write-in；
Logic thread is created, the buffer queue in the buffer queue group in addition to the current cache queue is carried out to be written
The acquisition of daily record data.
3. log recording method according to claim 1 or 2, it is characterised in that this method also includes：
After the completion of daily record data in the current cache queue all writes, reselect and work as from the buffer queue group
Preceding buffer queue.
4. log recording method according to claim 3, it is characterised in that this method also includes：
Daily record data of the logic thread in the current cache queue all after the completion of write-in, reselects current cache
Before queue is completed, synchrolock is added in the acquisition to daily record data to be written.
5. log recording method according to claim 1 or 2, it is characterised in that this method also includes：
Task is write for multiple journal files, is that each journal file write-in task distributes corresponding buffer queue group respectively.
6. a kind of log recording apparatus, it is characterised in that including：
Queue generation module, for distributing buffer queue group for journal file write-in task, the buffer queue group is comprising at least
Two buffer queues；
Control module, for selecting at least one buffer queue in the buffer queue group as current cache queue；
Read and write management module, for by the current cache queue daily record data write disk in journal file, simultaneously
Buffer queue in the buffer queue group in addition to the current cache queue obtains daily record data to be written.
7. log recording apparatus according to claim 6, it is characterised in that the read-write management module includes：
First thread administrative unit, for creating I/O threads, the daily record data carried out in the current cache queue is literary to daily record
Write-in in part, adds synchrolock to the journal file in address period, the synchrolock is released after the completion of write-in；
Second thread-management unit, for creating logic thread, carries out removing the current cache queue in the buffer queue group
Acquisition of the outer buffer queue to daily record data to be written.
8. the log recording apparatus according to claim 6 or 7, it is characterised in that
The control module, is additionally operable to after the completion of the daily record data whole write-in in the current cache queue, delays from described
Deposit and reselected in set of queues current cache queue.
9. the log recording apparatus according to claim 6 or 7, it is characterised in that
The queue generation module, is additionally operable to write task for multiple journal files, is each journal file write-in task point
Corresponding buffer queue group is not distributed.
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