CN105045729B - A kind of buffer consistency processing method and system of the remote agent with catalogue - Google Patents
A kind of buffer consistency processing method and system of the remote agent with catalogue Download PDFInfo
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- 238000003672 processing method Methods 0.000 title claims abstract description 14
- 230000004044 response Effects 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims description 26
- 230000004048 modification Effects 0.000 claims description 14
- 238000012986 modification Methods 0.000 claims description 14
- 230000000977 initiatory effect Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
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Abstract
Buffer consistency processing method and system the invention discloses a kind of remote agent with catalogue,It enables remote agent obtain the local that local request source is initiated to request and handle,When receiving the response message and data from the remote agent,The response message and data are returned into the local request source,And corresponding catalogue and data are respectively written into Directory caching and data buffer storage,Judge whether there is other destination requests identical with the address of the remote agent,If there is then successively handling the destination request,Remote agent is sent to since locally request to occupy a catalogue and data cache,The response message requested to this returns,Within the time until remote agent's inner buffer resource failed,If have it is other meet certain condition lower same Address requests or listen to message enter remote agent,Pen request can directly be handled inside remote agent,Message circulation is reduced quickly to be responded,It is operated without cross-node,Reduce expense.
Description
Technical field
The present invention relates to field of computer architecture, the buffer consistency more particularly to a kind of remote agent with catalogue
Processing method and system.
Background technique
Based on the multipath server system of consistency interconnection chip, need to keep the cache of data slow during realization
Deposit consistency.During current cache consistency protocol is realized, local agent and remote agent are respectively as agency distal end
Request and the main body locally requested are two major parts of consistency chip protocol processing.
Message is listened in order to reduce in pilot process, accelerates the response speed of system, remote agent and local agent are all
The data mode of Cache Line cache lines can be recorded by the way of " catalogue ".However, with multipath server system, pipe
The physical memory resources of reason are increasing, and the storage resource expense using " catalogue " mode is also increasing, especially multichannel system
The remote agent side of system.Equilibrium considers, during realization, often using remote agent without " catalogue ", local agent is adopted
With the mode of complete " catalogue ", lack a kind of buffer consistency processing method of the lesser remote agent of expense with catalogue.
Summary of the invention
In view of this, the buffer consistency processing side the main purpose of the present invention is to provide a kind of remote agent with catalogue
Method and system make remote agent with catalogue and have smaller expense.
To achieve the above object, the buffer consistency processing method the present invention provides a kind of remote agent with catalogue, packet
It includes：
Step A：It enables remote agent obtain the local that local request source is initiated to request and handle；
Step B：When receiving the response message and data from the remote agent, the response message and data are returned
The local request source is returned, and corresponding catalogue and data are respectively written into Directory caching and data buffer storage；
Step C：Other destination requests identical with the address of the remote agent are judged whether there is, if there is then successively locating
Manage the destination request.
Preferably, other destination requests identical with the address of the remote agent include：
The local request and the address from the remote agent that local request source is sent to the address of the remote agent
Listen to request in distal end.
Preferably, handling the destination request includes：
Judge the type of the destination request；
When the type of the destination request is local request, the catalogue shape with the Directory caching is locally requested according to this
The priority level of state information handles the destination request；
When the type of the destination request is that request is listened in distal end, request and the Directory caching are distally listened to according to this
The priority level of directory state information handle the destination request.
Preferably, the status information includes modification state, exclusive state, shared state and invalid state；
The modification state is identical as the priority level of exclusive state, and is higher than the shared state, the priority of the shared state
It Gao Yu not the invalid state.
Preferably, it when the type of the destination request is local request, is locally requested and the Directory caching according to this
The priority level of directory state information handle the destination request：
Judge whether the priority level of the catalogue of the Directory caching is higher than or is equal to the priority level locally requested；
If the priority level of the catalogue of the Directory caching is higher than or is equal to the priority level locally requested, protect
It is constant in local status information to hold far-end address data, initiates locally to listen to, is repaired when the response locally listened to returns
Change the corresponding directory information of local request source；
Judge that same Address requests queue needs whether the condition discharged meets as empty and cache resources, is returned if being unsatisfactory for
The step C is returned, judges whether directory state information is modification state if meeting, when the non-modification state of the directory state information
When terminate process, when the directory state information be modification state when, when judging whether that only a request source has copy, if it is
Then terminate process, otherwise initiate shared state writeback request, receives and write back release corresponding resource when completing information and terminate process；
If the priority level of the catalogue of the Directory caching is lower than the priority level locally requested, local ask is initiated
The failure asked is listened to, and data in the local request source that fails are listened to when the failure and initiated when response returns to the far-end address
Writeback request when receiving writeback request completion information, initiates currently local request to distal end.
Preferably, when the type of the destination request be distal end listen to request when, according to this distally listen to request with it is described
The priority level of the directory state information of Directory caching handles the destination request：
Whether the status information and the status information for distally listening to request for judging the catalogue of the Directory caching are all altogether
State is enjoyed, if it is shared state response message, and return step C is returned to distal end, otherwise initiates distally to listen to request phase with this
Request is listened in same local or request is listened in failure, when request is listened in the local or request response return is listened in failure,
Update according to the response of return or fail local directory caching and data buffer storage, and return step C.
A kind of buffer consistency processing system the present invention also provides remote agent with catalogue, including：
Initial processing module, for enabling remote agent obtain the local request of local request source initiation and handling；
Respond module, for when receiving the response message and data from the remote agent, by the response message
The local request source is returned with data, and corresponding catalogue and data are respectively written into Directory caching and data buffer storage；
Same address processing module, for judging whether there is other destination requests identical with the address of the remote agent,
If there is then successively handling the destination request.
Preferably, other destination requests identical with the address of the remote agent include：
The local request and the address from the remote agent that local request source is sent to the address of the remote agent
Listen to request in distal end.
Using a kind of buffer consistency processing method and system of the remote agent with catalogue provided by the invention, distal end generation is enabled
Reason obtain that local request source initiates it is local request and handled, when receiving the response message sum number from the remote agent
According to when, the response message and data are returned into the local request source, and corresponding catalogue and data are respectively written into catalogue
Caching and data buffer storage, judge whether there is other destination requests identical with the address of the remote agent, if there is then successively
The destination request is handled, remote agent is sent to since locally request and occupies a catalogue and data cache, until the pen is asked
The response message asked returns, within the time until remote agent's inner buffer resource failed, if there is other meet certain condition
Under with Address requests or listen to message and enter remote agent, pen request can directly be handled inside remote agent, reduce report
Text circulation is quickly responded, and is operated without cross-node, and expense is reduced.
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 consistency processing method embodiment one of the remote agent with catalogue of the present invention；
Fig. 2 is a kind of flow chart of buffer consistency processing method embodiment two of the remote agent with catalogue of the present invention；
Fig. 3 is the buffer structure schematic diagram of the embodiment of the present invention two；
Fig. 4 is a kind of structural representation of buffer consistency processing system embodiment three of the remote agent with catalogue of the present invention
Figure.
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.
Embodiment one：
A kind of buffer consistency processing method the present invention provides remote agent with catalogue, Fig. 1 show of the invention remote
One flow chart of embodiment of buffer consistency processing method of the end agency with catalogue, including：
Step S101：It enables remote agent obtain the local that local request source is initiated to request and handle；
Local request message processing, remote agent, which obtains, locally to be requested and handles.
Step S102：When receiving the response message and data from the remote agent, by the response message sum number
According to the return local request source, and corresponding catalogue and data are respectively written into Directory caching and data buffer storage；
The response message of remote agent and corresponding data are returned into request source, corresponding catalogue and data are respectively written into mesh
Record caching and data buffer storage.
Step S103：Judge whether there is other destination requests identical with the address of the remote agent, if there is then according to
The secondary processing destination request.
The type of destination request includes the local request for the address that local request source is sent to the remote agent and comes from institute
Request is listened in the distal end for stating the address of remote agent, and request is listened in the local request or distal end for judging whether there is same address, if
Have, is requested or listened to the sequence that message enters assembly line by these, corresponding queue is written and successively handles.
Using a kind of buffer consistency processing method of the remote agent with catalogue provided in this embodiment, remote agent is enabled to obtain
Take that local request source initiates it is local request and handled, when receiving response message and data from the remote agent
When, the response message and data are returned into the local request source, and corresponding catalogue and data are respectively written into catalogue and delayed
It deposits and data buffer storage, other destination requests identical with the address of the remote agent is judged whether there is, if there is then successively locating
The destination request is managed, remote agent is sent to since locally request and occupies a catalogue and data cache, until the pen is requested
Response message return, within the time until remote agent's inner buffer resource failed, if there is other meet certain condition down
It with Address requests or listens to message and enters remote agent, pen request can directly be handled inside remote agent, reduce message
Circulation is quickly responded, and is operated without cross-node, and expense is reduced.
Embodiment two：
Buffer consistency processing method embodiment two Fig. 2 shows remote agent of the present invention with catalogue, specific steps are such as
Under：
1. scheduling starts, remote agent normally handles the local request that local request source is initiated, and waits until the pen is requested
Response and until data return to remote agent, the far end response message and corresponding data are returned into request source, and by the catalogue
And data information, Directory caching and data buffer storage is written.Within this time, if there is the local request of other same addresses or distal end
It listens to message and enters remote agent, by these requests or message can be listened to press in sequence into assembly line, corresponding row is written
Team's sequence.
2. judging the corresponding queue of the far-end address, if for sky.If it is sky, scheduling flow terminates, corresponding
Cache resources can be occupied by other requests, otherwise need to judge that outstanding message is local request message in queue,
Still message is distally listened to, and judges that the directory information state of the record in required data mode and Directory caching carries out
Priority comparison.Wherein, four sub-cases that relationship situation introduces between the two are as described in following processes 3,4,5,6.
3. if the message is local request message, and the directory information in Directory caching needs to degrade or keep, i.e., currently
Directory level in Directory caching is higher than directory level required by local request message, or sane level therewith.Then in Directory caching
Data without update, catalogue it is not necessary to modify or and only carry out sane level modification, and to local request source initiation listen to message, wait detect
After listening response to return, the copy of the maternal data in caching is sent to request source, and according to the feelings for actually possessing copy data
Condition modifies the position the Bit information for possessing fresh copy data in list of designations caching, completes this request.If condition cannot expire
The subsequent queuing request queue of foot is sky, and has new message application to occupy the cache resources, then process jumps to 2.Otherwise, it needs
Judge whether current directory buffer status is M state, if it is M state, and more than one local request source possesses data buffer storage information,
The writeback request that local data can be labeled as to S state is then initiated, discharges resource after receiving and writing back response.Otherwise, it directly releases
Put resource.
4. if the message is local request message, and the directory information in Directory caching needs to upgrade, i.e., current directory is slow
Directory level in depositing is lower than directory level required by local request message.Then remote agent is to the request for possessing fresh copy
Source initiates failure and listens to message, after collecting failure and listening to response, initiates writeback request to distal end according to Directory caching information, to
It writes back after response collects, jumps to process 1, handle current request message.
5. if the message is that message is listened in distal end, and the directory information in Directory caching is believed with the catalogue for listening to message requirement
Breath is all S state.Then remote agent directly returns to S state response message, and jumps to process 2.
6. if the message is that message is listened in distal end, and the directory information in Directory caching is believed with the catalogue for listening to message requirement
Breath is not all S state.The directory information in directory states and current cache according to required by listening to message is then needed to be judged.
If the former priority is high or the former desired directory states are E state, remote agent is to the request for possessing local latest data
Source initiates failure and listens to request, and otherwise, remote agent initiates distally to listen to report with this to the request source for possessing local latest data
Text is identical to listen to message.When it is all listen to message and collect after, then according to listening to response failure or update local directory caching
And data buffer storage, and jump to process 2.
According to the processing capacity of remote agent in the present embodiment, cache resources of the remote agent with catalogue, caching are pre-allocated
Structural schematic diagram is as shown in Figure 3.The each single item of the cache resources, all by indexing ID, Directory caching and data buffer storage composition.Its
In, index ID is corresponded with status information list item occupied by currently processed request inside remote agent；Directory caching by
In local status information and N Bit, locally the corresponding directory information of each request source forms 2Bit far-end address data.Wherein,
ST0, ST1 are initialized as 0,2B, and ' 00 indicates that the far-end address corresponding data is invalid state, is labeled as I, and 2B ' 01 is shared state,
It is exclusive state labeled as S, 2B ' 10, is labeled as E, 2B ' 11 is modification state, is labeled as M.We provide E state and M state is that highest is excellent
First grade, S state are taken second place, and I priority is minimum, then when the state of the far-end address corresponding data be revised as from high priority it is low preferential
Grade is known as degrading, otherwise is known as upgrading, and the conversion of E state and M state is referred to as kept.The locally corresponding directory information of each request source
Number N, the number of the corresponding local request source that request can be initiated to distal end be initialized as 0, if the Bit in corresponding requests source
Position is labeled as 1, then indicating that the Bit corresponding request source possesses newest copy data.The corresponding distal end of data buffer storage storage
The newest maternal data in address, wherein indicating the remote data length, the length is fixed under normal circumstances from 0 to M.
Embodiment three：
A kind of buffer consistency processing system the present invention also provides remote agent with catalogue, Fig. 4 show the present invention
The structural schematic diagram of buffer consistency processing system embodiment three of the remote agent with catalogue, including：
Initial processing module 101, for enabling remote agent obtain the local request of local request source initiation and handling；
Respond module 102, for when receiving the response message and data from the remote agent, the response to be reported
Text and data return to the local request source, and corresponding catalogue and data are respectively written into Directory caching and data buffer storage；
With address processing module 103, asked for judging whether there is other targets identical with the address of the remote agent
It asks, if there is then successively handling the destination request.
Other destination requests identical with the address of the remote agent include in the present embodiment：
The local request and the address from the remote agent that local request source is sent to the address of the remote agent
Listen to request in distal end.
Using a kind of buffer consistency processing system of the remote agent with catalogue provided in this embodiment, remote agent is enabled to obtain
Take that local request source initiates it is local request and handled, when receiving response message and data from the remote agent
When, the response message and data are returned into the local request source, and corresponding catalogue and data are respectively written into catalogue and delayed
It deposits and data buffer storage, other destination requests identical with the address of the remote agent is judged whether there is, if there is then successively locating
The destination request is managed, remote agent is sent to since locally request and occupies a catalogue and data cache, until the pen is requested
Response message return, within the time until remote agent's inner buffer resource failed, if there is other meet certain condition down
It with Address requests or listens to message and enters remote agent, pen request can directly be handled inside remote agent, reduce message
Circulation is quickly responded, and is operated without cross-node, and expense is reduced.
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 provided by the present invention, system and mobile terminal are described in detail above, tool used herein
Principle and implementation of the present invention are described for body example, the above embodiments are only used to help understand this hair
Bright method and its core concept；At the same time, for those skilled in the art, according to the thought of the present invention, specific real
Apply in mode and application range that there will be changes, in conclusion the content of the present specification should not be construed as to limit of the invention
System.
Claims (2)
1. a kind of buffer consistency processing method of remote agent with catalogue, which is characterized in that including：
Step A：It enables remote agent obtain the local that local request source is initiated to request and handle；
Step B：When receiving the response message and data from the remote agent, the response message and data are returned into institute
Local request source is stated, and corresponding catalogue and data are respectively written into Directory caching and data buffer storage；
Step C：Other destination requests identical with the address of the remote agent are judged whether there is, if there is then successively handling institute
State destination request；
Wherein, other described destination requests include that the local of the address that local request source is sent to the remote agent requests and come from
Listen to request in the distal end of the address of the remote agent；The processing destination request includes：Judge the destination request
Type；When the type of the destination request is local request, the directory states with the Directory caching are locally requested according to this
The priority level of information handles the destination request；It is remote according to this when the type of the destination request is that request is listened in distal end
Request is listened at end and the priority level of the directory state information of the Directory caching handles the destination request；The directory states
Information includes：Modify state, exclusive state, shared state and invalid state；The modification state is identical as the priority level of exclusive state, and is higher than
The priority level of the shared state, the shared state is higher than the invalid state；
When the type of the destination request is the local request, judge the catalogue of the Directory caching priority level whether
It is higher than or is equal to the priority level locally requested；If the priority level of the catalogue of the Directory caching is higher than or is equal to
It when the priority level locally requested, keeps far-end address data constant in local status information, initiates locally to listen to, work as institute
It states and modifies local request source corresponding directory information when the response locally listened to returns；Judge that same Address requests queue is empty and slow
It deposits resource and needs whether the condition discharged meets, the step C is returned if being unsatisfactory for, judge directory states if meeting
Whether information is modification state, terminates process when the non-modification state of the directory state information, when the directory state information is to repair
When changing state, when judging whether that only a request source has copy, if it is terminate process, otherwise the shared state of initiation, which writes back, asks
It asks, receives and write back release corresponding resource when completing information and terminate process；If the priority level of the catalogue of the Directory caching
When lower than the priority level locally requested, the failure for initiating locally to request is listened to, data in the local request source that fails, when described
Failure is listened to and initiates writeback request to the far-end address when response returns, and when receiving writeback request completion information, sends out to distal end
Play current local request；
When the type of the destination request is that request is listened in distal end, judges the status information of the catalogue of the Directory caching and be somebody's turn to do
Distal end listens to whether the status information of request is all shared state, if it is returns to shared state response message to distal end, and return
Step C, otherwise initiates distally to listen to that request is listened in the identical local of request or request is listened in failure with this, detects when working as the local
When listening request or failure to listen to request response to return, updated or failed according to the response of return local directory caching and data it is slow
It deposits, and return step C.
2. a kind of buffer consistency processing system of remote agent with catalogue, which is characterized in that including：
Initial processing module, for enabling remote agent obtain the local request of local request source initiation and handling；
Respond module, for when receiving the response message and data from the remote agent, by the response message sum number
According to the return local request source, and corresponding catalogue and data are respectively written into Directory caching and data buffer storage；
Same address processing module, for judging whether there is other destination requests identical with the address of the remote agent, if
Have, successively handles the destination request；Wherein, other described destination requests include that local request source is sent to the remote agent
The local request of address and the distal end of the address from the remote agent listen to request；The processing destination request packet
It includes：Judge the type of the destination request；When the type of the destination request is local request, according to the local request and institute
The priority level for stating the directory state information of Directory caching handles the destination request；When the type of the destination request is distal end
When listening to request, request is distally listened to according to this and the priority level of the directory state information of the Directory caching handles the mesh
Mark request；The directory state information includes：Modify state, exclusive state, shared state and invalid state；The modification state and exclusive state
Priority level is identical, and is higher than the shared state, and the priority level of the shared state is higher than the invalid state；When the target is asked
When the type asked is the local request, judge whether the priority level of the catalogue of the Directory caching is higher than or is equal to this
The priority level of ground request；If the priority level of the catalogue of the Directory caching be higher than or be equal to this locally request it is preferential
It when rank, keeps far-end address data constant in local status information, initiates locally to listen to, when the response locally listened to
Local request source corresponding directory information is modified when return；Judge that same Address requests queue is empty and cache resources needs discharge
Whether condition meets, and the same address processing module is returned if being unsatisfactory for, and judges that directory state information is if meeting
No is modification state, terminates process when the non-modification state of the directory state information, when the directory state information is modification state,
When judging whether that only a request source has copy, if it is terminate process, otherwise initiates shared state writeback request, receive and write
It returns release corresponding resource when completing information and terminates process；If the priority level of the catalogue of the Directory caching is lower than the local
When the priority level of request, the failure for initiating locally to request is listened to, data in the local request source that fails, when sound is listened in the failure
Writeback request is initiated to the far-end address when should return, when receiving writeback request completion information, is initiated to distal end current local
Request；When the type of the destination request is that request is listened in distal end, judge the status information of the catalogue of the Directory caching with
Whether the status information for distally listening to request is all shared state, if it is returns to shared state response message to distal end, and return
The same address processing module is returned, otherwise initiates distally to listen to the identical local of request with this to listen to request or fail to listen to and ask
It asks, when request is listened in the local or request response return is listened in failure, is updated or failed according to the response of return and is local
Directory caching and data buffer storage, and return to the same address processing module.
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| CN107341114B (en) * | 2016-04-29 | 2021-06-01 | 华为技术有限公司 | Directory management method, node controller and system |
| US10282297B2 (en) * | 2017-02-08 | 2019-05-07 | Arm Limited | Read-with overridable-invalidate transaction |
| CN107368435B (en) * | 2017-07-19 | 2020-03-06 | 郑州云海信息技术有限公司 | Simplified directory and method for realizing Cache consistency monitoring by utilizing same |
| CN107634982A (en) * | 2017-07-27 | 2018-01-26 | 郑州云海信息技术有限公司 | A kind of multipath server interconnects chip remote agent's catalogue implementation method |
| CN107249008B (en) * | 2017-07-28 | 2020-09-22 | 苏州浪潮智能科技有限公司 | Channel interconnection device and method for remote data direct access |
| CN109684237B (en) * | 2018-11-20 | 2021-06-01 | 华为技术有限公司 | Data access method and device based on multi-core processor |
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| CN103294611A (en) * | 2013-03-22 | 2013-09-11 | 浪潮电子信息产业股份有限公司 | Server node data cache method based on limited data consistency state |
| CN103294612A (en) * | 2013-03-22 | 2013-09-11 | 浪潮电子信息产业股份有限公司 | Method for constructing Share-F state in local domain of multi-level cache consistency domain system |
| CN103870435A (en) * | 2014-03-12 | 2014-06-18 | 华为技术有限公司 | Server and data access method |
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