CN111163018B - Network equipment and method for reducing transmission delay thereof - Google Patents
Network equipment and method for reducing transmission delay thereof Download PDFInfo
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- CN111163018B CN111163018B CN201911215163.0A CN201911215163A CN111163018B CN 111163018 B CN111163018 B CN 111163018B CN 201911215163 A CN201911215163 A CN 201911215163A CN 111163018 B CN111163018 B CN 111163018B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/28—Flow control; Congestion control in relation to timing considerations
- H04L47/283—Flow control; Congestion control in relation to timing considerations in response to processing delays, e.g. caused by jitter or round trip time [RTT]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A method for reducing data transmission delay comprises the following steps: the network equipment acquires the data packet characteristics of a data packet to be scheduled; according to the corresponding relation between the preset data packet characteristics and the processing cores in the multi-core processor, the network equipment searches the processing cores corresponding to the data packet characteristics of the data packet to be scheduled; and the network equipment processes the data packet according to the searched processing core. Therefore, the data packet can be effectively prevented from being processed by the same processing core. The corresponding processing cores are selected for processing through the data packet characteristics, the utilization rate of the processing cores of the multi-core processor is effectively improved, so that the data packet can respond more timely, and the data transmission and processing speed is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a device for reducing transmission delay.
Background
With the development of chip manufacturing technology, more and more processor chips are beginning to develop into multi-core chips. By integrating a plurality of complete computing engines or cores in one processor, the computing performance of the whole processor is improved as a whole. For example, more and more processors in a router collect multi-core chips.
In the current communication products such as wireless routers, a WiFi chip usually runs on one core of a multi-core processor, and interruption cannot be responded in time, so that the data transmission efficiency of the wireless router is not high.
Disclosure of Invention
The embodiment of the application provides a network device and a method for reducing data transmission delay thereof, and can solve the problems that in the prior art, interruption of a multi-core network device cannot be responded in time, and the data transmission efficiency of the network device is not high.
In a first aspect, an embodiment of the present application provides a method for reducing data transmission delay, where the method for reducing data transmission delay includes: the network equipment acquires the data packet characteristics of a data packet to be scheduled; according to the corresponding relation between the preset data packet characteristics and the processing cores in the multi-core processor, the network equipment searches the processing cores corresponding to the data packet characteristics of the data packet to be scheduled; and the network equipment processes the data packet according to the searched processing core.
The network device can find the processing core corresponding to the data packet by acquiring the data packet characteristics of the data packet to be scheduled and combining the preset corresponding relation between the data packet device and the processing core in the multi-core processor, and can automatically match the corresponding processing core according to the data packet characteristics, so that the data packet can be effectively prevented from being processed by the same processing core. The corresponding processing cores are selected for processing through the data packet characteristics, the utilization rate of the processing cores of the multi-core processor is effectively improved, so that the data packet can respond more timely, and the data transmission and processing speed is improved.
The data packet characteristics may include the service type of the data packet, the WIFI module identifier corresponding to the data packet, and other characteristics. The WIFI module identifier may be a service identifier set SSID of the WIFI module, or the like.
Possibly, the step of, by the network device, searching for the processing core corresponding to the packet feature of the packet to be scheduled according to the correspondence between the preset packet feature and the processing core in the multi-core processor includes: the network equipment acquires a WIFI module corresponding to the data packet included in the data packet characteristics; according to the preset corresponding relation between the WIFI module and the processing cores in the multi-core processor, the network equipment searches the processing cores corresponding to the WIFI module.
For network equipment comprising a plurality of WIFI modules, the identifier of each WIFI module can be respectively determined, and the binding relationship between the identifier and the processing core is established. When the data packet is transmitted to the multi-core processor through the WIFI module, the corresponding processing core can be rapidly determined only according to the WIFI module corresponding to the data packet. The utilization efficiency of the processing core can be effectively improved while data between different WIFI modules can be effectively isolated.
Illustratively, the step of searching the processing core corresponding to the WIFI module according to a preset correspondence between the WIFI module and the processing core in the multi-core processor includes: according to the corresponding relation between the service set identification SSID of the WIFI module and the processing core, the network equipment searches the processing core corresponding to the service set identification SSID. Different WIFI circuits can be effectively distinguished through the service identifier set SSID.
In a possible implementation manner, the step of, according to a correspondence between a preset packet feature and a processing core in the multi-core processor, the network device searching for the processing core corresponding to the packet feature of the packet to be scheduled includes: the network equipment acquires the data packet service type included in the data packet characteristics; and according to the corresponding relation between the preset service type and the processing core in the multi-core processor, the network equipment searches the processing core corresponding to the service type. The service type comprises one or more of a game type, a video type, an instant messaging type and a common internet access type.
It can be seen that, for the same network device, such as a wireless router or a wireless MOED device, the number of connected terminal devices may include a plurality of terminal devices, and the service types of data packets transmitted simultaneously in the same terminal device may include a plurality of terminal devices, and by matching the service types of the data packets with different processing cores, the parallelism of data transmission by the processing cores can be effectively improved, and the utilization efficiency of the multi-core processor can be improved.
In one implementation, the method further comprises: the network equipment acquires the busy value of the searched processing core; and when the busy value of the searched processing core is greater than a preset busy threshold value, the network equipment allocates the data packet to be scheduled to the processing core with the busy value less than the busy threshold value.
It can be seen that the parallel processing efficiency of the processor can be further optimized by estimating the busy value of the processing core, transferring the data packet corresponding to the processing core with the busy value exceeding the preset busy threshold on the basis of the preset corresponding relationship, and processing the data packet by the processing core with the busy value smaller than the busy threshold.
The busy threshold of the processing core may be set in advance according to parameters of the processor, for example, through parameter setting such as a main frequency, or a network device may obtain a busy value of the processing core in the multi-core processor, and the network device determines the busy threshold according to an average value of the busy values of the processor.
In a possible embodiment, the step of acquiring a busy value of a processing core in a multi-core processor includes: the method comprises the steps that network equipment obtains the CPU scheduling time of a processing core of a multi-core processor; and the network equipment determines the busy value of the processing core according to the corresponding relation between the preset CPU scheduling time and the busy value. By monitoring the scheduling time of the data packet, the processing state of the processing core can be fed back in real time. When the processing core is busy or the processing core is in a blocking state, the scheduling time length is correspondingly increased, and the state of the processing core can be effectively represented in a quantized manner by setting busy values corresponding to different scheduling time lengths.
In a possible embodiment, the method further comprises: the network equipment acquires the priority of the data packet to be scheduled; and when the busy value of the searched processing core is greater than a preset busy threshold, the network equipment searches the corresponding processing core in the processing cores with the busy value less than the busy threshold according to the priority of the data packet to be scheduled. And further optimizing the processing core corresponding to the data packet on the basis of determining the corresponding relation between the data packet characteristics and the processing cores. By monitoring the busy state of the processing cores searched by the data packet characteristics, when the busy value is greater than a preset busy threshold, the corresponding processing cores can be matched in the processing cores with the busy value less than the busy threshold according to the priority of the data packet. For example, the higher the priority, the smaller the processing core is matched with a busy value.
Wherein the step of obtaining the priority of the data packet to be scheduled comprises: the network equipment acquires the service type of the data packet to be scheduled; and according to the corresponding relation between the preset service type and the priority, the network equipment determines the priority corresponding to the data packet to be scheduled. Or, the priority of the data packet may be determined according to the WIFI module corresponding to the data packet.
In a possible implementation manner, the method further includes: the network equipment acquires the operating parameters of a plurality of processing cores corresponding to the same service type; the network equipment estimates the scheduling duration corresponding to the scheduling task executed by the processing core according to the operation parameters; and when the actual scheduling time length is greater than the estimated scheduling time length and the difference value of the actual scheduling time length and the estimated scheduling time length is greater than a preset time length threshold value, the network equipment determines that the processing core is in a blocking state. Wherein the operating parameters of the processing cores comprise main frequencies of the processing cores. By estimating and comparing the scheduling time of the processing core, the running state of the processing core can be determined more effectively.
In a possible embodiment, the method further comprises: the network equipment acquires the operating parameters of a plurality of processing cores corresponding to the same service type; and the network equipment determines a processing core corresponding to the service type according to the preset priority of the service type and by combining the operation parameters of the processing core. The step of determining, according to the preset priority of the service type and in combination with the operating parameter of the processing core, the processing core corresponding to the service type may include: the network equipment determines a service priority sequence according to the priority of the service type; the network equipment determines a performance sequence of the processing core according to the operation parameters of the processing core; and the network equipment determines the corresponding relation between the service type and the processing core according to the performance sequence and the service priority sequence.
It can be seen that by combining the priority of the service type and the operating parameters of the processing core, the corresponding relationship between the processing core and the service type can be more effectively established, so that the data packet with higher priority can be more timely and effectively processed.
In a second aspect, the present application provides a network device, the device comprising a memory, a processing screen and a computer program, the display screen being used for processed images, the computer program being stored in the memory, the computer program comprising instructions that, when executed by the network device, cause the network device to perform the method for reducing data transmission latency of any one of the first aspect.
In a third aspect, the present application provides a computer-readable storage medium storing a computer program, which when executed by a processor implements the method for reducing data transmission latency according to any one of the first aspect.
In a fourth aspect, embodiments of the present application provide a cloud computer program product containing instructions, which when run on a network device, cause the network device to perform the method for reducing data transmission latency according to any one of claims 1 to 15.
It is to be understood that the network device according to the second aspect, the computer storage medium according to the third aspect, and the computer program product according to the fourth aspect are all configured to execute the corresponding method provided above, and therefore, the beneficial effects achieved by the method can refer to the beneficial effects in the corresponding method provided above, and are not described herein again.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic view of an application scenario for reducing data transmission delay according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a method for reducing data transmission delay implemented based on a corresponding relationship between a WIFI module and a processing core according to an embodiment of the present application;
fig. 3 is a schematic diagram of a correspondence between a processing core and a WIFI module according to an embodiment of the present application;
fig. 4 is a schematic diagram of an implementation flow of searching for a processing core of a multi-core processor for data transmission based on a service type according to an embodiment of the present application;
fig. 5 is a schematic diagram of processing core allocation determined based on service types and usage amounts according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a system for reducing data transmission delay according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an apparatus for reducing data transmission delay according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the embodiments of the present application, "one or more" means one, two, or more than two; "and/or" describes the association relationship of the associated objects, indicating that three relationships may exist; for example, a and/or B, may represent: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Fig. 1 is a schematic view of an application scenario for reducing data transmission delay according to an embodiment of the present application, which is detailed as follows:
as shown in fig. 1, the method for reducing data transmission delay is typically applied to a network device, and the network device is connected to one or more terminal devices through a WIFI module or a wired module. The terminal equipment can be a smart phone, a tablet computer, a notebook computer or a desktop computer and the like. The network device may include one or more WIFI modules. For example, in the same network device, a 2.4G WIFI module, a 5G WIFI module, and the like may be included. The network device comprises an interrupt scheduling module which can be used for carrying out interrupt scheduling operation on the processing cores in the multi-core processor according to the received data packets. For example, the multi-core processor in fig. 1 is a four-core processor, and can perform task scheduling on three processing cores, so that the scheduled processing cores can quickly and effectively respond to a scheduling instruction, and the data transmission speed and the instruction response speed are improved. After being processed by the multi-core processor, the data packet can be sent to a base station or a next-level router or other equipment.
Based on the network device shown in fig. 1, the processing core in the corresponding multi-core processor may be searched for based on the packet device of the packet received by the network device, and the packet may be subjected to data transmission processing through the searched processing core. The data packet characteristics may include a service type of the data packet, a WIFI module corresponding to the transmission data packet, and the like, which are described below.
Fig. 2 is a schematic flowchart of a method for reducing data transmission delay based on a corresponding relationship between a WIFI module and a processing core according to an embodiment of the present application, which is detailed as follows:
in step S201, the network device acquires a WIFI module corresponding to a data packet to be scheduled;
when the network equipment comprises a plurality of WIFI modules, the WIFI modules can be determined to serve as data packet characteristics of the data packets to be scheduled according to the corresponding relation of the WIFI modules adopted in data packet transmission. For example, in the schematic diagram of the network device shown in fig. 3, the network device includes two WIFI modules, the processor of the network device is a multi-core processor, and the number of processing cores of the processor is four, so that the data packet transmitted by the WIFI module may be directly sent to a corresponding processing core for processing according to a pre-established correspondence between the processing cores and the WIFI modules.
In the correspondence between the processing cores and the WIFI modules shown in fig. 3, one WIFI module may correspond to two processing cores respectively in a halving manner.
In a possible implementation manner, the processing core corresponding to the WIFI module may be determined according to the obtained number of data packets transmitted by different WIFI modules. For example, the ratio of the number of processing cores corresponding to the WIFI module may be correspondingly determined according to the ratio of the data packets transmitted by the WIFI module. For example, in a specific statistical result, a ratio of a data amount transmitted by the first WIFI module to a data packet transmitted by the second WIFI module is 1 to 3, and accordingly, 1 processing core may be allocated to the first WIFI module and 3 processing cores may be allocated to the second WIFI module.
In a possible embodiment, an operation parameter of the processing core may also be obtained, where the operation parameter may include a main frequency of the processing core, and the like. And counting data packets of the WIFI modules in the network equipment, and distributing corresponding processing cores according to the counted data packets transmitted by the WIFI modules and in combination with the performance ratios of the processing cores. For example, the ratio of data packets transmitted by two WIFI modules (respectively a first WIFI module and a second WIFI module) in fig. 3 is 5: 4, and it is determined that the performance ratio of four processing cores (sequentially a first processing core, a second processing core, a third processing core, and a fourth processing core) is 3:4:5:6 according to performance parameters such as a main frequency of the processing cores, so that the first processing core and the third processing core may be matched with the first WIFI module, and the second processing core and the fourth processing core may be matched with the second WIFI module.
Or, the processing cores corresponding to the WIFI modules may be determined according to different priorities, where priorities of data packets transmitted by different WIFI modules are different. And allocating a processing core with better performance for the WIFI circuit corresponding to the data packet with higher priority, or allocating a plurality of processing cores for the WIFI circuit corresponding to the data packet with higher priority, so as to improve the transmission and response speed of the WIFI module corresponding to the data packet with higher priority.
Due to the premise of the embodiment shown in fig. 2, it is necessary to determine that a plurality of WIFI modules are included in the network device. Therefore, before the WIFI module corresponding to the data packet of the data packet to be scheduled is obtained, the configuration parameters of the network device can be detected, the network device is determined to be multi-core processor device according to the configuration parameters of the network device, and the network device comprises a plurality of WIFI modules. The configuration parameters set by the network can obtain the processor parameter information of the network equipment in a mode of reading the configuration files of the network equipment. When the network device is determined to be a multi-core processor device and to include a plurality of WIFI modules, the WIFI modules in the data packet characteristics transmitted by the network device may be further acquired.
In other embodiments, when multiple WIFI modules may not be needed, the configuration parameters in the network device may be directly detected, and it is determined whether the network device is a device with a multi-core processor.
In step S202, according to a preset correspondence between a WIFI module and a processing core in a multi-core processor, a network device searches for the processing core corresponding to the WIFI module;
in the base, the correspondence between the processing core and the WIFI module may be a correspondence between a service identifier set SSID of the processing core and the WIFI module and the processing core.
According to the corresponding relation between a preset WIFI module and a processing core in the multi-core processor, after the WIFI module corresponding to the data packet is determined, the processing core corresponding to the data packet can be determined according to the corresponding relation.
In an embodiment, when the same WIFI module corresponds to two or more processing cores, the processing core corresponding to the data packet may be selected according to an operation parameter and an operation state of the processing core. For example, in the network device shown in fig. 3, the same WIFI module corresponds to two processing cores, and when a data packet to be scheduled is received, it is determined that the data packet to be scheduled corresponds to a first processing core and a second processing core. Further acquiring the operating states of the first processing core and the second processing core, for example, determining a scheduling queue of the first processing core and a scheduling queue of the second processing core, and determining a first time duration to wait when the first processing core is selected and a second time duration to wait when the second processor is selected. The processing core with a smaller waiting time to wait can be selected to perform the packet transmission processing. For example, the scheduling queue corresponding to the first processing core includes 3 data packets, and the scheduling durations corresponding to the data packets are 3ms, 7ms, and 9ms, the scheduling queue corresponding to the second processing core includes 3 data packets, and the scheduling durations corresponding to the second processing core are 5ms, 6ms, and 5ms, respectively, because the waiting duration of the first processing core is 3+7+9 — 19ms, and the waiting duration required by the second processing core is 5+5+6 — 16ms, the second processing core may be preferentially selected to perform transmission processing on the data packets.
In an embodiment, when the same WIFI module corresponds to two or more processing cores, the processing cores corresponding to different service types may be determined according to the service type of the data packet in the WIFI module. For example, when the same WIFI module corresponds to two processing cores, different service types may be allocated to the processing cores according to service types of data packets in the WIFI module, including allocating data packets of service types such as a video type and a general internet access type to a first processing core, and allocating data packets of game types and instant messaging types to a second processing core for processing.
In step S203, the network device processes the data packet according to the searched processing core.
And according to the searched processing core, sending the data packet to a scheduling queue corresponding to the searched data packet, and performing scheduling processing on the data packet. The data processed by the processing core may be sent to a base station or a next-level router.
In the network equipment comprising a plurality of WIFI modules, by establishing the corresponding relation between the WIFI modules and the processing cores, due to the working parallelism of the WIFI modules, the problems that when a multi-core processor processes data packets needing to be transmitted, the efficiency is not high when a single processing core processes the data packets, and the response is not timely can be effectively avoided.
Fig. 4 is a schematic diagram of an implementation flow of searching for a processing core of a multi-core processor for data transmission based on a service type according to an embodiment of the present application, which is detailed as follows:
in step S401, a data packet service type to be scheduled is acquired;
the data packet service type may include one or more of a game type, a video type and a general internet access type. The game type may be determined as the game type according to the application name information, or when detecting an online page game run by a game site with a specific domain name, for example, when running FLASH game data on a face. The video type can determine that the service type is the video type according to the set video application program or the data of the video format included in the page. In order to distinguish the advertisement service of the short video, the video type network of a specific domain name can be counted, and the video type can be rapidly distinguished according to the counted specific domain name by combining the video length. The instant messaging type may record a particular instant messaging application such as WeChat, QQ, Wang, etc. The common internet access type may be other data acquisition types excluding the above type. Of course, the common internet access type may be further divided according to the processor allocation accuracy, for example, the common internet access type may be further divided into a mail type, a data download type, and the like according to the priority of the internet access task.
Before the data packet to be scheduled is obtained, whether the network device is a multi-core processor device or not may be determined by detecting configuration information of the network device, for example, by reading a configuration file of the network device. And after the network equipment is determined to be multi-core processor equipment, further detecting the type of the acquired data packet.
In step S402, according to a preset correspondence between a service type and a processing core in a multi-core processor, a network device searches for a processing core corresponding to the service type;
and searching a processing core corresponding to the service type corresponding to the data packet according to the corresponding relation between the service type and the processing core, and processing the data corresponding to the service type by the processing core.
When the corresponding relationship between the service type and the processing core is established, the data packets may be divided according to the usage frequency or usage amount of the data packets of the network device, or may also be divided according to the delay requirement or priority requirement of the data packets of the network device.
In one embodiment, as shown in fig. 5, the traffic types and corresponding usage amounts of the data packets included in the network devices in the history may be counted. And dividing the service types according to the using amount. For example, the service types of the data packet may include service type 1, service type 2, service type 3, service type 4, service type 5, and service type 6, and the statistical usage amounts (i.e., the packet amounts processed by the multi-core processor in the network device) are respectively in the following proportions: the multi-core processor comprises 4 processing cores (assuming that scheduling queues in the 4 processing cores are the same), the service type 1 and the service type 4 can be matched into the same processing core, the service type 2 and the service type 3 are matched into the same processing core, and the service type 5 and the service type 6 are respectively matched with one processing core, so that the multiple processing cores can process different service types more uniformly and can also effectively isolate data packets of different service types.
In an embodiment, the service types may be divided and matched to different processing cores according to delay requirements and data size of the service types. For example, for a video type service type, there are usually more data packets, and for a game type service type, there is usually a strict requirement on the delay time, that is, a smaller delay requirement needs to be ensured. In this case, a traffic type with a large data volume and a traffic type with a high real-time requirement can be allocated to different processing cores.
When the same service type (for example, a video type with a large data volume) corresponds to multiple processing cores, different processing cores may also be corresponding to different data packets of different WIFI modules corresponding to the same service type. For example, the service type of the video type corresponds to 3 processing cores, and may correspond to different processing cores according to the WIFI module used by the data packet of the video type. When the number of the processing cores corresponding to the WIFI module corresponding to the same service type data packet is different from that of the processing cores corresponding to the data packet of the same service type, the processing cores with poor performance can be matched into the same WIFI module. For example, the service type of the video type corresponds to 3 processing cores, and the number of the corresponding WIFI modules is 2. Assuming that the performances of the 3 processing cores are respectively the 1 st processing core, the 2 nd processing core and the third processing core in a good-to-bad order, the 2 nd processing core and the 3 rd processing core may be matched as the same WIFI module. The performance of the processing core may be determined according to parameters such as configuration parameters of the processing core and the length of the scheduling queue.
Or, the operation parameters of the processing cores of the multi-core processor corresponding to the WIFI module, including information such as dominant frequency, may be obtained, the priority corresponding to the data packet to be processed is obtained according to the preset service type, the performance sequence corresponding to the multiple processing cores may be determined according to the operation parameter information, the service priority sequence of the data packet is determined according to the priority of the service type, and the data packet with higher service priority is matched to the processing core with better performance, so as to further improve the performance of the processing core
In step S403, the network device processes the data packet according to the searched processing core.
The processing cores corresponding to the data packets are searched for processing through different service types, so that the method can effectively adapt to the application scenarios that multiple terminals are connected with the same network equipment at the same time and the service types of the multiple terminals are wider.
In an embodiment, according to the method for reducing data transmission delay shown in fig. 2 or fig. 4, after the processing core corresponding to the data packet is found, the scheduling of the processing core may be further optimized in the following manner, which is specifically detailed as follows:
the network equipment acquires the busy value of the searched processing core; and when the busy value of the searched processing core is greater than a preset busy threshold value, the network equipment allocates the data packet to be scheduled to the processing core with the busy value less than the busy threshold value.
The busy value of the processing core in the network device may be determined according to the CPU scheduling time of the processing core of the multi-core processor in the network device. By establishing the corresponding relation between the CPU scheduling time length and the busy value, the busy value of the processing core can be determined according to the determined CPU scheduling time length. The CPU scheduling time length is related to the length of the scheduling queue corresponding to the processing core, and when the number of data packets of the scheduling queue corresponding to the processing core is more or the scheduling time length of a single data packet is longer, the longer the CPU scheduling time length of the processing core is, the larger the busy value of the processing core is.
The busy threshold may be determined according to a configuration parameter of the processor. For example, a busy threshold of a processing core in a processor may be determined based on dominant frequencies in configuration parameters of the processing core. And determining the busy threshold value through the configuration parameters of the processing core, so that the processing core can quickly and timely transmit the data packet in the scheduling queue and can respond to the interrupt more timely.
The busy threshold value can also be used for acquiring a busy value of a processing core in the multi-core processor according to network equipment; and the network equipment determines the busy threshold according to the average value of the busy values of the processor. Namely, the busy threshold is dynamically adjusted according to the number of data packets being processed by the current processing core, and the data packets are dispatched to the processing core with a smaller busy value for processing according to the dynamically adjusted busy threshold, so that the data dispatching and responding capacity of the processor can be more effectively improved.
In an embodiment, after determining the busy threshold corresponding to the processing core, the priority of the data packet to be scheduled may also be determined, and the data packet is optimally scheduled according to the priority of the data packet and the busy value of the processing core.
The priority of the data packet may be determined according to the service type to which the data packet belongs and according to a preset correspondence between the service type and the priority. For example, the priority of the game type is set to 1 in advance, the priority of the instant messaging type is set to 2, the priority of the common internet access type is set to 3, and the priority of the video type is set to 4. By analyzing the busy value fed back by the processing core, the busy value of the processing core 1 is 1, the busy value of the processing core 2 is 2, the busy value of the processing core 3 is 3, the busy value of the processing core 4 is 4, and assuming that the average busy value is 2.5, the data packets to be processed in the processing core 3 and the processing core 4 can be dispatched to the processing core 1 and the processor 2 for processing. Considering the priority of the to-be-processed data packets in the processing cores 3 and 4, assuming that the to-be-processed data packets in the processing cores 3 are of a game type and the to-be-processed data packets in the processing cores 4 are of a video type, the to-be-processed data packets in the processing cores 3 may be scheduled to the processing core 1 and the to-be-processed data packets in the processing cores 4 may be scheduled to the processing core 2 because the priority of the game type is greater than the video type.
In addition, when the scheduling time of the processing core is determined, the operating parameters of a plurality of processing cores corresponding to the same service type can be acquired through network equipment. The operating parameters of the processing cores included in the same multi-core processor may be different. For example, the multi-core processor a includes two processing cores, whose corresponding master frequencies may be a1 and a2, and a1 ≠ a 2. The scheduling time length corresponding to the execution of the scheduling task by the processing core can be estimated according to the operation parameters of the processing core, and when the actual scheduling time length is greater than the estimated scheduling time length and the difference value between the actual scheduling time length and the estimated scheduling time length is greater than a preset threshold value, the processing core can be determined to be in a blocking state. After the processing core is determined to be in the blocking state, the data packet corresponding to the processing core can be dispatched to other processing cores for processing, so that the influence on the transmission performance and the response performance of the system due to the blocking of the processing core is avoided.
For example, if the main frequency in the operation parameters of the processing core X is obtained to be 1.9GHZ, the estimated scheduling time of the processing core X for the scheduling task M is 3ms, and the actual time for actually processing the scheduling task M is 8ms, it may be determined that the processing core is blocked, and the data packet corresponding to the processing core may be scheduled in time, and is switched to another non-blocked processing core.
Fig. 6 is a schematic diagram of a system structure corresponding to the method for reducing data transmission delay shown in fig. 4. As shown in fig. 6, the system for reducing data transmission delay includes a configuration reading module 601, a service type identification module 602, and a scheduling decision module 603.
Wherein: the configuration reading module 601 may read hardware configuration information of the network device, and may include the number of WIFI modules of the network device and the number of processing cores of the processor, or may further include configuration parameters of the processing cores, including, for example, dominant frequencies of the processing cores.
The service type identification module 602 may identify a service type of the data packet, for example, may identify that the service type of the service flow a is a video type, the service type of the service flow B is a game type, and the service type of the service flow C is a normal internet access type. According to the identified service type, the scheduling decision module 603 may determine the processing core corresponding to the service type according to the type, and may correspond to the same processing core for multiple types of processing, or may correspond to multiple processing cores, such as CPU1, CPU2, and CPU3 … … CPUn, for the same service type.
In addition, when the scheduling decision module performs the scheduling decision, it may also receive the delay information fed back by the processing core according to the information such as the scheduling queue, and the scheduling decision module 603 may further perform optimized scheduling on the data based on the correspondence between the service type and the processing core according to the fed-back delay information.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Fig. 7 is a schematic structural diagram of a device for reducing data transmission delay according to an embodiment of the present application, where the device for reducing data transmission delay includes:
a packet characteristic acquiring unit 701, configured to acquire, by a network device, a packet characteristic of a packet to be scheduled;
a processing core searching unit 702, configured to search, by the network device, a processing core corresponding to a packet feature of a packet to be scheduled according to a correspondence between a preset packet feature and a processing core in the multi-core processor;
a packet processing unit 703, configured to process, by the network device, the packet according to the searched processing core.
In one embodiment, the processing core lookup unit includes:
the WIFI module acquisition subunit is used for acquiring a WIFI module corresponding to the data packet included in the data packet characteristics by the network equipment;
and the first processing core searching subunit is used for searching the processing core corresponding to the WIFI module by the network equipment according to the corresponding relation between the preset WIFI module and the processing core in the multi-core processor.
In one embodiment, the processing core lookup subunit is configured to:
and searching a processing core corresponding to the service set identifier SSID by the network equipment according to the corresponding relation between the service set identifier SSID of the WIFI module and the processing core.
In one embodiment, the apparatus further comprises:
an operation parameter obtaining unit, configured to obtain, by a network device, operation parameters of multiple processing cores corresponding to a same service type;
and the processing core determining unit is used for determining the processing core corresponding to the service type by the network equipment according to the preset priority of the service type and by combining the operating parameters of the processing core.
In one embodiment, the processing core determination unit includes:
a service priority sequence determining subunit, configured to determine, by the network device, a service priority sequence according to a priority of the service type;
a performance sequence determination subunit, configured to determine, by the network device, a performance sequence of the processing core according to the operating parameter of the processing core;
and the corresponding relation determining subunit is used for determining the corresponding relation between the service type and the processing core by the network equipment according to the performance sequence and the service priority sequence.
In one embodiment, the processing core lookup unit includes:
a data service type obtaining subunit, configured to obtain, by the network device, a data packet service type included in the data packet characteristic;
and the second processing core searching subunit is used for searching the processing core corresponding to the service type by the network equipment according to the corresponding relation between the preset service type and the processing core in the multi-core processor.
In one embodiment, the service type includes one or more of a game type, a video type, an instant messaging type and a general internet access type.
In one embodiment, the apparatus further comprises:
a first processing core busy value obtaining unit, configured to obtain, by the network device, a busy value of the found processing core;
and the scheduling unit is used for allocating the data packet to be scheduled to the processing core with the busy value smaller than the busy threshold value by the network equipment when the found busy value of the processing core is larger than the preset busy threshold value.
In one embodiment, the apparatus further comprises:
the second processing core busy value acquisition unit is used for acquiring the busy value of the processing core in the multi-core processor by the network equipment;
and the busy threshold determining unit is used for determining the busy threshold by the network equipment according to the average value of the busy values of the processor.
The second processing core busy value acquiring unit includes:
the scheduling time obtaining subunit is used for obtaining the CPU scheduling time of the processing core of the multi-core processor by the network equipment;
and the busy value determining subunit is used for determining the busy value of the processing core by the network equipment according to the preset corresponding relation between the CPU scheduling time and the busy value.
The device further comprises:
a priority searching unit, configured to obtain, by a network device, a priority of the data packet to be scheduled;
and the processing core scheduling unit is used for searching the corresponding processing core in the processing cores with the busy values smaller than the busy threshold value according to the priority of the data packet to be scheduled by the network equipment when the found busy value of the processing core is larger than the preset busy threshold value.
The priority lookup unit includes:
a service type obtaining subunit, configured to obtain, by the network device, a service type to which the data packet to be scheduled belongs;
and the priority determining subunit is used for determining the priority corresponding to the data packet to be scheduled by the network equipment according to the corresponding relation between the preset service type and the priority.
In one embodiment, the apparatus further comprises:
a configuration parameter obtaining unit, configured to obtain, by the network device, a hardware configuration parameter of the device;
and the multi-core detection unit is used for detecting that the equipment is multi-core processor equipment by the network equipment according to the hardware configuration parameters.
In one embodiment, the apparatus further comprises:
an operation parameter obtaining unit, configured to obtain, by a network device, operation parameters of multiple processing cores corresponding to a same service type;
the scheduling duration estimation unit is used for estimating the scheduling duration corresponding to the execution of the scheduling task by the processing core according to the operation parameters by the network equipment;
and the state judgment unit is used for determining that the processing core is in a blocking state by the network equipment when the actual scheduling time length is greater than the estimated scheduling time length and the difference value of the actual scheduling time length and the estimated scheduling time length is greater than a preset time length threshold value.
In one embodiment, the operating parameter of the processing core comprises a master frequency of the processing core.
The apparatus for excluding the data transmission delay shown in fig. 7 corresponds to the method for reducing the data transmission delay shown in fig. 2.
Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 8, the network device 8 of this embodiment includes: at least one processor 80 (only one shown in fig. 8), a memory 81, and a computer program 82 stored in the memory 81 and operable on the at least one processor 80, wherein the processor 80 executes the computer program 82 to implement the steps of any of the various above-described method embodiments for reducing data transmission latency.
The network device may include, but is not limited to, a processor 80, a memory 81. Those skilled in the art will appreciate that fig. 8 is merely an example of the network device 8, and does not constitute a limitation of the network device 8, and may include more or less components than those shown, or combine some of the components, or different components, such as input output devices, network access devices, etc.
The Processor 80 may be a Central Processing Unit (CPU), and the Processor 80 may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 81 may be an internal storage unit of the network device 8 in some embodiments, for example, a hard disk or a memory of the network device 8. The memory 81 may also be an external storage device of the network device 8 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, provided on the network device 8. Further, the memory 81 may also include both an internal storage unit and an external storage device of the network device 8. The memory 81 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 81 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. For the specific working processes of the units and modules in the system, reference may be made to the corresponding processes in the foregoing method embodiments, which are not described herein again.
In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or apparatus capable of carrying computer program code to a network device, recording medium, computer Memory, Read-Only Memory (ROM), Random-Access Memory (RAM), electrical carrier wave signals, telecommunications signals, and software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.
The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (14)
1. A method for reducing data transmission delay, the method comprising:
the method comprises the steps that network equipment obtains data packet characteristics of a data packet to be scheduled, wherein the data packet characteristics comprise WIFI modules corresponding to the data packet;
according to a preset corresponding relation between a WIFI module and a processing core in a multi-core processor, network equipment searches the processing core corresponding to the WIFI module; the network equipment determines the ratio of the number of processing cores corresponding to each WIFI module according to the number of data packets transmitted by different WIFI modules, and determines the corresponding relation between the preset WIFI module and the processing cores in the multi-core processor according to the number of the processing cores in the multi-core processor and the ratio;
the network equipment acquires the current CPU scheduling time length of the searched processing core, and acquires the busy value of the searched processing core according to the current CPU scheduling time length, wherein the current CPU scheduling time length of the processing core refers to the time length required by the data packet currently being processed by the processing core;
when the busy value of the searched processing core is larger than a preset busy threshold value, the network equipment allocates the data packet to the processing core with the busy value smaller than the busy threshold value for processing, and the processing core with the busy value smaller than the busy threshold value is any processing core of the multi-core processor;
when the busy value of the searched processing core is smaller than or equal to the busy threshold value, the network equipment processes the data packet according to the searched processing core;
when the busy value of the found processing core is greater than a preset busy threshold, before the network device allocates the data packet to the processing core with the busy value less than the busy threshold for processing, the method further includes:
the method comprises the steps that a network device obtains a busy value of a processing core in a multi-core processor;
and the network equipment determines the busy threshold according to the average value of the busy values of the processor.
2. The method according to claim 1, wherein the step of searching for the processing core corresponding to the WIFI module according to a preset correspondence between the WIFI module and the processing core in the multi-core processor comprises:
and according to the corresponding relation between the service set identifier SSID of the WIFI module and the processing core, the network equipment searches the processing core corresponding to the service set identifier SSID.
3. The method of claim 1, wherein the method further comprises:
when the same WIFI module corresponds to two or more processing cores, the network equipment acquires the operating parameters of a plurality of processing cores corresponding to the same service type;
and the network equipment determines a processing core corresponding to the service type according to the preset priority of the service type and by combining the operation parameters of the processing core.
4. The method according to claim 3, wherein the step of determining the processing core corresponding to the service type according to the priority of the preset service type and by combining with the operating parameter of the processing core comprises:
the network equipment determines a service priority sequence according to the priority of the service type;
the network equipment determines a performance sequence of the processing core according to the operation parameters of the processing core;
and the network equipment determines the corresponding relation between the service type and the processing core according to the performance sequence and the service priority sequence.
5. The method of claim 1, wherein the data packet characteristics include a data packet service type;
the method further comprises the following steps:
when the same WIFI module corresponds to two or more processing cores, the network equipment acquires the data packet service type included in the data packet characteristics;
and according to the corresponding relation between the preset service type and the processing core in the multi-core processor, the network equipment searches the processing core corresponding to the service type.
6. The method of claim 5, wherein the service type includes one or more of a game type, a video type, an instant messaging type, and a general internet access type.
7. The method of claim 1, wherein the step of obtaining a busy value of a processing core in a multi-core processor comprises:
the method comprises the steps that network equipment obtains the CPU scheduling time of a processing core of a multi-core processor;
and the network equipment determines the busy value of the processing core according to the corresponding relation between the preset CPU scheduling time and the busy value.
8. The method of claim 1, wherein the method further comprises:
the network equipment acquires the priority of the data packet to be scheduled;
and when the busy value of the searched processing core is greater than a preset busy threshold, the network equipment searches the corresponding processing core in the processing cores with the busy value less than the busy threshold according to the priority of the data packet to be scheduled.
9. The method of claim 8, wherein the step of obtaining the priority of the data packet to be scheduled comprises:
the network equipment acquires the service type of the data packet to be scheduled;
and according to the corresponding relation between the preset service type and the priority, the network equipment determines the priority corresponding to the data packet to be scheduled.
10. The method of claim 1, wherein before the step of the network device obtaining the packet characteristics of the packet to be scheduled, the method further comprises:
the network equipment acquires the hardware configuration parameters of the equipment;
and the network equipment detects that the equipment is multi-core processor equipment according to the hardware configuration parameters.
11. The method of claim 1, wherein the method further comprises:
when the same WIFI module corresponds to two or more processing cores, the network equipment acquires the operating parameters of a plurality of processing cores corresponding to the same service type;
the network equipment estimates the scheduling duration corresponding to the scheduling task executed by the processing core according to the operation parameters;
and when the actual scheduling time length is greater than the estimated scheduling time length and the difference value of the actual scheduling time length and the estimated scheduling time length is greater than a preset time length threshold value, the network equipment determines that the processing core is in a blocking state.
12. The method of claim 11, wherein the operating parameters of the processing core comprise a dominant frequency of the processing core.
13. A network device, characterized in that the device comprises a memory, a display for processed images and a computer program stored in the memory, the computer program comprising instructions which, when executed by the network device, cause the network device to carry out the method of reducing data transmission latency of any one of claims 1 to 12.
14. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the method of reducing latency of data transmission according to any one of claims 1 to 12.
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