CN105302497B - A kind of buffer memory management method and system - Google Patents
A kind of buffer memory management method and system Download PDFInfo
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- CN105302497B CN105302497B CN201510822300.2A CN201510822300A CN105302497B CN 105302497 B CN105302497 B CN 105302497B CN 201510822300 A CN201510822300 A CN 201510822300A CN 105302497 B CN105302497 B CN 105302497B
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Abstract
The invention discloses a kind of buffer memory management method and systems, are each user's operation batch operation identifier number；It calculates separately each operation mark and numbers the shared bandwidth of corresponding operation caching；When preset bandwidth threshold is 0, each operation mark is numbered into corresponding read-write process, the priority that the descending size distribution caching of shared bandwidth uses is cached according to operation；When preset bandwidth threshold is greater than 0, the operation mark that shared bandwidth is greater than or equal to preset bandwidth threshold is numbered corresponding read-write process to hang up, the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered into corresponding read-write process, the priority that the descending distribution caching of shared bandwidth uses is cached according to operation, the priority used according to the read or write speed of each thread distribution caching, it prevents the read-write of single file from postponing that entire service feature is caused to decline, efficiently caching can be managed.
Description
Technical field
The present invention relates to field of distributed storage, more particularly to a kind of buffer memory management method and system.
Background technique
With the rapid development of network application, network information data amount is increasing, and the mass data storage of PB rank becomes
It obtains more and more important.The local disk storage mode of traditional sense has been unable to meet large capacity, high reliability, the height of existing application
The requirement such as performance, extending transversely, to meet these new demands, network-based distributed memory system has obtained extensive attention.
By taking a kind of typical distributed file system as an example, bottom is mounted in such a way that object stores (OSD)
After client node, mapped outward by the Network File System NFS or universal network file system CIFS agreement of standard,
It connects and uses for terminal user.When user initiates to be directed to the read-write requests of certain file, data can arrive first at client node,
It is put into client-cache, the node position where each slice object of file is obtained by file slice and consistency Hash calculation
It sets, then read and write and operation return code or file data is fed back into front end user.In whole process, client is delayed
The mechanism of depositing plays an important role, and in read operation, it is responsible for starting and pre-reads, by a certain range after file destination reading position
Data be put into spatial cache in advance be getting faster so that sequence is read, and in write operation, it is responsible for spelling small block data
It dresses up chunk data and unifies rule, improve performance.As it can be seen that existing in the case where mixing read-write or multiple files operate simultaneously
The problem of buffer scheduling, traditional distributed file system are only capable of accomplishing simply to introduce caching, can not accomplish adaptively, to apply
The read-write delay of inefficiency, single file may cause the performance decline of entire business.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of buffer memory management method and system, it can be efficiently right
Caching is managed.
To achieve the above object, the present invention provides a kind of buffer memory management methods, comprising:
The read-write operation instruction for responding each user, is each user's operation batch operation identifier number；
It calculates separately each operation mark and numbers the shared bandwidth of corresponding operation caching；
Judge whether preset bandwidth threshold is 0；
When preset bandwidth threshold is 0, each operation mark is numbered into corresponding read-write process, according to shared by operation caching
The priority that the descending size distribution caching of bandwidth uses；
When preset bandwidth threshold is greater than 0, judge that each operation mark numbers whether corresponding operation caches shared bandwidth
Less than preset bandwidth threshold, the operation mark that shared bandwidth is greater than or equal to preset bandwidth threshold is numbered into corresponding read-write
Process is hung up, and the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered corresponding read-write process, slow according to operation
Deposit the priority that the descending distribution caching of shared bandwidth uses.
Preferably, the operation mark that shared bandwidth is greater than or equal to preset bandwidth threshold is numbered into corresponding read-write process
After hang-up further include:
When the shared bandwidth for the read-write process being suspended is restored to be less than preset bandwidth threshold, is waken up and be added not
It distributes in the read-write process of caching.
Preferably, each operation mark is numbered into corresponding read-write process, it is descending big to cache shared bandwidth according to operation
Small distribution caches the priority used
In the read-write process of unallocated caching, the maximum operation mark number of shared bandwidth is cached for current operation and is corresponded to
Read-write process distribute caching, cache according to operation that shared bandwidth is descending to be sequentially allocated default point for other read-write processes
Caching with threshold value.
Preferably, the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered into corresponding read-write process, according to
Operation caches the priority that the descending distribution caching of shared bandwidth uses
In the read-write process that shared bandwidth is less than preset bandwidth threshold and unallocated caching, institute is cached for current operation
It accounts for the maximum operation mark of bandwidth and numbers corresponding read-write process distribution caching, institute is cached according to operation for other read-write processes
Account for the descending caching for being sequentially allocated default allocation threshold of bandwidth.
Preferably, after the priority that the descending distribution caching of shared bandwidth uses being cached according to operation further include:
The read-write process of the allocated caching is written and read.
The present invention also provides a kind of cache management systems, comprising:
Operation mark number distribution module, the read-write operation for responding each user are instructed, are distributed for each user's operation
Operation mark number；
Bandwidth calculation module numbers the shared bandwidth of corresponding operation caching for calculating separately each operation mark；
Distribution module is cached, for judging whether preset bandwidth threshold is 0；It, will be each when preset bandwidth threshold is 0
Operation mark numbers corresponding read-write process, is used according to the descending size distribution caching of the shared bandwidth of operation caching preferential
Grade；When preset bandwidth threshold is greater than 0, it is pre- to judge whether the corresponding shared bandwidth of operation caching of each operation mark number is less than
If bandwidth threshold, the operation mark that shared bandwidth is greater than or equal to preset bandwidth threshold is numbered into corresponding read-write process and is hung
It rises, the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered into corresponding read-write process, according to shared by operation caching
The priority that the descending distribution caching of bandwidth uses.
Preferably, the cache management system further include:
Read-write operation module is written and read for the read-write process to the allocated caching.
Using a kind of buffer memory management method provided by the invention and system, compiled for each user's operation batch operation mark
Number；It calculates separately each operation mark and numbers the shared bandwidth of corresponding operation caching；It, will be each when preset bandwidth threshold is 0
Operation mark numbers corresponding read-write process, is used according to the descending size distribution caching of the shared bandwidth of operation caching preferential
Grade；When preset bandwidth threshold is greater than 0, shared bandwidth is greater than or equal to the operation mark number pair of preset bandwidth threshold
The read-write process answered is hung up, and the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered corresponding read-write process, root
The priority that the descending distribution caching of shared bandwidth uses is cached according to operation, is made according to the read or write speed of each thread distribution caching
Priority prevents the read-write of single file from postponing that entire service feature is caused to decline, efficiently can carry out pipe to caching
Reason.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart of buffer memory management method embodiment of the present invention；
Fig. 2 is the structural schematic diagram of distributed file system of the present invention；
Fig. 3 is a kind of specific flow chart of buffer memory management method embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of cache management system embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of buffer memory management method, Fig. 1 shows the process of buffer memory management method embodiment of the present invention
Figure, comprising:
Step S101: the read-write operation instruction of each user is responded, is each user's operation batch operation identifier number；
As there are two user, then distributing ID for user 1 is 1, be the distribution of user 2 ID is 2.
Step S102: it calculates separately each operation mark and numbers the shared bandwidth of corresponding operation caching；
Calculate separately bandwidth shared by the read-write process that ID is 1 and ID is 2.
Step S103: judge whether preset bandwidth threshold is 0, if it is, entering step S104, is otherwise entered step
S105；
Step S104: when preset bandwidth threshold is 0, each operation mark is numbered into corresponding read-write process, according to behaviour
Cache the priority that the descending size distribution caching of shared bandwidth uses；
The priority that the descending size distribution caching of shared bandwidth uses is cached according to operation specifically: unallocated slow
In the read-write process deposited, it is slow that the corresponding read-write process distribution of the maximum operation mark number of shared bandwidth is cached for current operation
It deposits, the descending caching for being sequentially allocated default allocation threshold of shared bandwidth is cached according to operation for other read-write processes.
Step S105: when preset bandwidth threshold is greater than 0, judge that each operation mark is numbered shared by corresponding operation caching
Whether bandwidth is less than preset bandwidth threshold, and shared bandwidth is greater than or equal to the operation mark number pair of preset bandwidth threshold
The read-write process answered is hung up, and the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered corresponding read-write process, root
The priority that the descending distribution caching of shared bandwidth uses is cached according to operation.
When the shared bandwidth for the read-write process being suspended is restored to be less than preset bandwidth threshold, is waken up and be added not
Distribute caching read-write process in, by shared bandwidth be less than preset bandwidth threshold operation mark number it is corresponding read and write into
Journey caches the priority that the descending distribution caching of shared bandwidth uses according to operation specifically: be less than in shared bandwidth default
Bandwidth threshold and the read-write process of unallocated caching in, cache the maximum operation mark number pair of shared bandwidth for current operation
The read-write process distribution caching answered, for other read-write processes according to operation cache shared bandwidth it is descending be sequentially allocated it is default
The caching of allocation threshold.
In the present embodiment, client issues read write command, carries out caching monitoring and executes read-write operation again, theory structure is as schemed
Shown in 2.
Assuming that pre-set bandwidths threshold value is a, and when first terminal user initiates to be directed to the read-write operation of file A, caching prison
Control module will receive message, which is denoted as No. 0 operation ID and is recorded, and later, caching monitoring module can pass through timing
It records the data volume that No. 0 operation is loaded into caching and calculates its caching occupied bandwidth x, in conjunction with module on startup from system
The user defined code stream bandwidth a value read in configuration file to the operation carry out speed limit, if a be 0, be considered as operation enjoy it is whole
Block caching, it is without restriction, if a is the value greater than 0, issued to client host process for this read-write thread when x is not less than a
Pending signal, so that its moment is entered dormant state, caching occupied bandwidth waited to be waken up when revert to a value or less again,
It continues to execute.In addition, specified code stream bandwidth a value can be arranged online in read-write carries out, caching monitoring module can obtain immediately
It takes and United Dispatching is carried out according to current operation ID number, so that setting is come into force immediately, administrator is facilitated to operate；
When second terminal user initiates to be directed to the read-write operation of file B, caching monitoring module can increase 1 to operate ID
Mode is recorded, so as to subsequent scheduling.If a value is greater than 0 at this time, identical as above-mentioned regulating strategy, if but a value
If 0, it just will appear the problem of two operations competition caches, in this case, caching monitoring module can be according to calculated 1
Number operation caching occupied bandwidth y with No. 0 operation x be compared, with this come distinguish two operate temperatures, to divide excellent
First grade, the high preferential right for enjoying caching of temperature, and temperature is lower only maintains a preset threshold b, is still logical
It crosses above-mentioned regulating strategy to realize, with increasing for read-write thread, the treatment scale for caching monitoring module is also increased accordingly, but whole
Regulating strategy be constant；
Fig. 3 is the overall flow figure of the present embodiment, caches what the descending distribution caching of shared bandwidth used according to operation
The read-write process of the allocated caching is written and read after priority.
It is each user's operation batch operation identifier number using a kind of buffer memory management method provided in this embodiment；Point
Each operation mark is not calculated numbers the shared bandwidth of corresponding operation caching；When preset bandwidth threshold is 0, each operation is marked
Know and number corresponding read-write process, the priority that the descending size distribution caching of shared bandwidth uses is cached according to operation；When
When preset bandwidth threshold is greater than 0, the operation mark number that shared bandwidth is greater than or equal to preset bandwidth threshold is corresponding
Read-write process is hung up, and the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered corresponding read-write process, according to behaviour
The priority that the descending distribution caching of shared bandwidth uses is cached, is used according to the read or write speed of each thread distribution caching
Priority prevents the read-write of single file from postponing that entire service feature is caused to decline, can efficiently be managed to caching.
The present invention also provides a kind of cache management system, Fig. 4 shows the knot of cache management system embodiment of the present invention
Structure schematic diagram, comprising:
Operation mark number distribution module 101, the read-write operation for responding each user instructs, for each user's operation point
It is numbered with operation mark；
Bandwidth calculation module 102 is connected, for calculating separately each behaviour with the operation mark number distribution module 101
It makes a check mark and numbers the shared bandwidth of corresponding operation caching；
Distribution module 103 is cached, is connected with the bandwidth calculation module 102, for judging that preset bandwidth threshold is
No is 0；When preset bandwidth threshold is 0, each operation mark is numbered into corresponding read-write process, shared band is cached according to operation
The priority that the descending size distribution caching of width uses；When preset bandwidth threshold is greater than 0, each operation mark number is judged
Corresponding operation caches whether shared bandwidth is less than preset bandwidth threshold, and shared bandwidth is greater than or equal to preset bandwidth threshold
The operation mark of value is numbered corresponding read-write process and is hung up, and the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered
Corresponding read-write process caches the priority that the descending distribution caching of shared bandwidth uses according to operation.
It is each user's operation batch operation identifier number using a kind of cache management system provided in this embodiment；Point
Each operation mark is not calculated numbers the shared bandwidth of corresponding operation caching；When preset bandwidth threshold is 0, each operation is marked
Know and number corresponding read-write process, the priority that the descending size distribution caching of shared bandwidth uses is cached according to operation；When
When preset bandwidth threshold is greater than 0, the operation mark number that shared bandwidth is greater than or equal to preset bandwidth threshold is corresponding
Read-write process is hung up, and the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered corresponding read-write process, according to behaviour
The priority that the descending distribution caching of shared bandwidth uses is cached, is used according to the read or write speed of each thread distribution caching
Priority prevents the read-write of single file from postponing that entire service feature is caused to decline, can efficiently be managed to caching.
It should be noted that all the embodiments in this specification are described in a progressive manner, each embodiment weight
Point explanation is the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
For system class embodiment, since it is basically similar to the method embodiment, so being described relatively simple, related place ginseng
See the part explanation of embodiment of the method.
Finally, it is to be noted that, herein, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
Method and system provided by the present invention is described in detail above, specific case used herein is to this
The principle and embodiment of invention is expounded, method of the invention that the above embodiments are only used to help understand and
Its core concept；At the same time, for those skilled in the art in specific embodiment and is answered according to the thought of the present invention
With in range, there will be changes, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (7)
1. a kind of buffer memory management method characterized by comprising
The read-write operation instruction for responding each user, is each user's operation batch operation identifier number；
It calculates separately each operation mark and numbers the shared bandwidth of corresponding operation caching；
Judge whether preset bandwidth threshold is 0；
When preset bandwidth threshold is 0, each operation mark is numbered into corresponding read-write process, shared bandwidth is cached according to operation
The priority that descending size distribution caching uses；
When preset bandwidth threshold is greater than 0, judge that each operation mark numbers corresponding operation and caches whether shared bandwidth is less than
The operation mark that shared bandwidth is greater than or equal to preset bandwidth threshold is numbered corresponding read-write process by preset bandwidth threshold
It hangs up, the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered into corresponding read-write process, institute is cached according to operation
Account for the priority that the descending distribution caching of bandwidth uses.
2. buffer memory management method according to claim 1, which is characterized in that shared bandwidth is greater than or equal to preset band
After the operation mark of wide threshold value numbers corresponding read-write process hang-up further include:
When the shared bandwidth for the read-write process being suspended is restored to be less than preset bandwidth threshold, is waken up and be added unallocated
In the read-write process of caching.
3. buffer memory management method according to claim 2, which is characterized in that by each operation mark number it is corresponding read and write into
Journey, caching the priority that the descending size distribution caching of shared bandwidth uses according to operation includes:
In the read-write process of unallocated caching, the shared maximum operation mark of bandwidth is cached for current operation and numbers corresponding reading
Write process distributes caching, is sequentially allocated default distribution threshold according to the shared bandwidth of operation caching is descending for other read-write processes
The caching of value.
4. buffer memory management method according to claim 2, which is characterized in that shared bandwidth is less than preset bandwidth threshold
Operation mark number corresponding read-write process, the priority that the descending distribution caching of shared bandwidth uses is cached according to operation
Include:
In the read-write process that shared bandwidth is less than preset bandwidth threshold and unallocated caching, shared band is cached for current operation
The maximum operation mark of width numbers corresponding read-write process distribution caching, caches shared band according to operation for other read-write processes
The descending caching for being sequentially allocated default allocation threshold of width.
5. buffer memory management method according to claim 1, which is characterized in that it is descending to cache shared bandwidth according to operation
After the priority that distribution caching uses further include:
The read-write process of the allocated caching is written and read.
6. a kind of cache management system characterized by comprising
Operation mark number distribution module, the read-write operation for responding each user instruct, and are each user's operation batch operation
Identifier number；
Bandwidth calculation module numbers the shared bandwidth of corresponding operation caching for calculating separately each operation mark；
Distribution module is cached, for judging whether preset bandwidth threshold is 0；When preset bandwidth threshold is 0, by each operation
The corresponding read-write process of identifier number caches the priority that the descending size distribution caching of shared bandwidth uses according to operation；
When preset bandwidth threshold is greater than 0, it is default to judge whether the corresponding shared bandwidth of operation caching of each operation mark number is less than
Bandwidth threshold, the operation mark that shared bandwidth is greater than or equal to preset bandwidth threshold is numbered into corresponding read-write process and is hung
It rises, the operation mark that shared bandwidth is less than preset bandwidth threshold is numbered into corresponding read-write process, according to shared by operation caching
The priority that the descending distribution caching of bandwidth uses.
7. cache management system according to claim 6, which is characterized in that further include:
Read-write operation module is written and read for the read-write process to the allocated caching.
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| CN105893118B (en) * | 2016-03-30 | 2019-11-26 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN106302733A (en) * | 2016-08-16 | 2017-01-04 | 浪潮(北京)电子信息产业有限公司 | A kind of distributed type assemblies merges implementation method and the device of NFS protocol |
| CN107171869A (en) * | 2017-07-11 | 2017-09-15 | 郑州云海信息技术有限公司 | A kind of method and system that bandwidth control is carried out to CEPH file system |
| CN107682280A (en) * | 2017-09-22 | 2018-02-09 | 郑州云海信息技术有限公司 | The method, apparatus and equipment of QOS flows control based on NFS |
| CN107704213B (en) * | 2017-11-02 | 2021-08-31 | 郑州云海信息技术有限公司 | Automatic service quality management method and device for storage array |
| CN109062514B (en) * | 2018-08-16 | 2021-08-31 | 郑州云海信息技术有限公司 | Bandwidth control method and device based on namespace and storage medium |
| CN110955512B (en) * | 2018-09-27 | 2023-05-30 | 阿里巴巴集团控股有限公司 | Cache processing method, device, storage medium, processor and computing equipment |
| CN110286949A (en) * | 2019-06-27 | 2019-09-27 | 深圳市网心科技有限公司 | Process based on the read-write of physical host storage device hangs up method and relevant device |
| CN111414245B (en) * | 2020-03-26 | 2023-06-13 | 北京小米移动软件有限公司 | Method, device and medium for controlling flash memory read-write rate |
| CN112162695A (en) * | 2020-09-09 | 2021-01-01 | Oppo（重庆）智能科技有限公司 | Data caching method and device, electronic equipment and storage medium |
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