CN111083057A - Flow control method and device and computer storage medium - Google Patents
Flow control method and device and computer storage medium Download PDFInfo
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- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/29—Flow control; Congestion control using a combination of thresholds
Abstract
The embodiment of the invention discloses a flow control method, a flow control device and a computer storage medium, which solve the technical problems of low accuracy and poor timeliness of the existing flow control method. In the implementation of the invention, a request sent by a client is received, and historical state information is acquired; respectively obtaining the actual processing request number per second and the theoretical processing request number per second according to the historical state information; if the actual number of requests processed per second is less than the theoretical number of requests processed per second, the requests are processed. Compared with the prior art, the method and the device have the advantages that under the trigger of receiving the request sent by the client, the new theoretical processing request number per second, namely the threshold value, is obtained through real-time calculation, and the actual processing request number per second is compared to decide whether to process the request, so that the purpose of flow control is achieved, the fixed threshold value is not used, timeliness is strong, the theoretical TPS is obtained through calculation according to historical processing information, the real-time processing capability of a system can be represented, and accuracy is high.
Description
Technical Field
The invention relates to the technical field of flow control, in particular to a flow control method, a flow control device and a computer storage medium.
Background
Network traffic control refers to controlling the amount of data sent into the network, or the maximum rate at which data traffic is sent, over a specified time (bandwidth limit). In the existing flow control method, a predicted value is obtained as a threshold value according to experience of operation and maintenance personnel or a test result in a laboratory, and the flow control is controlled within the threshold value.
However, the conventional flow control method has the following problems: the test environment is not exactly the same as the field environment, but the best predicted value tested is not necessarily accurate in the field environment. And the fixed threshold value cannot represent the real-time processing capability of the system, and the fixed threshold value is used for flow control, so that the accuracy is low, the timeliness is poor, and the operation efficiency of the system is influenced. If the threshold value is far smaller than the actual value, the resource waste is caused, and if the threshold value is far larger than the actual value, the system is slowed down or even down, and a very large negative effect is caused.
Disclosure of Invention
Embodiments of the present invention provide a flow control method, an apparatus, and a computer storage medium, which solve the technical problems of low accuracy and poor timeliness when a fixed flow threshold is used in the existing flow control method.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a flow control method, including:
receiving a request sent by a client to acquire historical state information;
respectively obtaining the actual processing request number per second and the theoretical processing request number per second according to the historical state information;
and if the actual number of processing requests per second is less than the theoretical number of processing requests per second, processing the requests.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the historical state information includes a historical processing request number, a historical starting thread total number, and a historical time for all threads to process each request.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the obtaining, according to the historical state information, an actual number of processing requests per second specifically includes: and obtaining the latest processing request number in one minute according to the historical processing request number, obtaining the latest average processing request number per second in one minute, and taking the latest average processing request number per second in one minute as the actual processing request number per second.
With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the obtaining, according to the historical state information, a theoretical number of processing requests per second specifically includes: obtaining the median of the thread processing request time according to the time of processing each request by all the historical threads, and calculating the theoretical processing request number per second according to the following formula:
theoretical number of processing requests per second 1/median of thread processing request time historical total number of starting threads
With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the obtaining historical state information is specifically obtaining historical state information from a Metrics monitoring module.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the method further includes sending the requested processing information to the Metrics monitoring module.
In a second aspect, an embodiment of the present invention provides a flow control device, including:
the acquisition module is used for receiving a request sent by a client and acquiring historical state information;
the calculation module is used for respectively obtaining the actual processing request number per second and the theoretical processing request number per second according to the historical state information;
and the flow control module is used for processing the request if the actual number of the processing requests per second is less than the theoretical number of the processing requests per second.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the historical state information includes a historical processing request number, a historical starting thread total number, and a historical time for all threads to process each request.
With reference to the second aspect, in a second possible implementation manner of the second aspect, the apparatus further includes:
and the Metrics monitoring module is used for receiving the processing information of the request sent by the flow control module and sending the historical state information to the acquisition module.
In a third aspect, an embodiment of the present invention provides a computer storage medium including computer instructions that, when executed by a processor, implement the above-described flow control method.
The embodiment of the invention provides a flow control method, a flow control device and a computer storage medium, and solves the technical problems of low accuracy and poor timeliness of the existing flow control method. In the implementation of the invention, a request sent by a client is received, and historical state information is acquired; respectively obtaining the actual processing request number per second and the theoretical processing request number per second according to the historical state information; if the actual number of requests processed per second is less than the theoretical number of requests processed per second, the requests are processed. Compared with the prior art, the method and the device have the advantages that under the trigger of receiving the request sent by the client, the new theoretical processing request number per second, namely the threshold value, is obtained through real-time calculation, and the actual processing request number per second is compared to decide whether to process the request, so that the purpose of flow control is achieved, the fixed threshold value is not used, timeliness is strong, the theoretical TPS is obtained through calculation according to historical processing information, the real-time processing capability of a system can be represented, and accuracy is high.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a server capable of operating a flow control method according to an embodiment of the present invention;
fig. 2 is a flowchart of a method of a flow control method according to an embodiment of the present invention;
fig. 3 is a block diagram of a flow control device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, those skilled in the art can obtain the embodiments without any inventive step in advance, and the embodiments are within the protection scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1, a schematic structural diagram of a server provided in an embodiment of the present invention is shown, where the server may run a method flow provided in an embodiment of the present invention.
The server comprises an input unit, a processor unit, an output unit, a communication unit, a storage unit, a peripheral unit and the like. These components communicate over one or more buses. Specifically, the method comprises the following steps:
the input unit is used for realizing the interaction between a user and the server and/or inputting information into the server. For example, the input unit may receive numeric or character information input by a user to generate a signal input related to user setting or function control. In the embodiment of the present invention, the input unit may be a touch panel, or may be other human-computer interaction interfaces, such as a physical input key, a mouse, or a joystick.
The processor unit is a control center of the server, connects various parts of the entire server using various interfaces and lines, and executes various functions of the server and/or processes data by operating or executing software programs and/or modules stored in the storage unit and calling data stored in the storage unit. The processor unit may be composed of an Integrated Circuit (IC), for example, a single packaged IC, or a plurality of packaged ICs connected with the same or different functions. For example, the processor Unit may include only a Central Processing Unit (CPU), or may be a combination of a GPU, a Digital Signal Processor (DSP), and a control chip (e.g., a baseband chip) in the communication Unit. In the embodiment of the present invention, the CPU may be a single operation core, or may include multiple operation cores.
The communication unit is used for establishing a communication channel, enabling the server to be connected to the remote equipment through the communication channel, and carrying out data interaction with the remote equipment.
The output unit includes, but is not limited to, an image output unit and a sound output unit. The image output unit is used for outputting characters, pictures and/or videos. The image output unit may include a display panel, such as a display panel configured in the form of an LCD (Liquid crystal display), an OLED (Organic Light-Emitting Diode), a Field Emission Display (FED), and the like.
The storage unit may be used to store software programs and modules, and the processing unit executes various functional applications of the server and implements data processing by running the software programs and modules stored in the storage unit. The storage unit mainly includes a program storage area and a data storage area, where the program storage area may store an operating system, an application program required by at least one function, such as a flow control program written based on the flow control method provided in this embodiment. In an embodiment of the invention, the Memory unit may include a volatile Memory, such as a nonvolatile dynamic random Access Memory (NVRAM), a Phase Change random Access Memory (PRAM), a Magnetoresistive Random Access Memory (MRAM), and a non-volatile Memory, such as at least one magnetic disk Memory device, an electrically erasable Programmable Read-Only Memory (EEPROM), a flash Memory device, such as a NAND flash Memory, or a nor flash Memory. The nonvolatile memory stores an operating system and an application program executed by the processing unit. The processing unit loads the operating program and data from the non-volatile memory into the memory and stores the digital content in the mass storage device.
The power supply is used to power the various components of the server to maintain their operation, including an external power supply that directly powers the server, such as an AC adapter or the like. In some embodiments of the invention, the power supply may be more broadly defined and may include, for example, a power management system, a charging system, a power failure detection circuit, a power converter or inverter, a power status indicator (e.g., a light emitting diode), and any other components associated with power generation, management, and distribution of the server.
An embodiment of the present invention provides a flow control method, as shown in fig. 2, including:
and S110, receiving a request sent by a client, and acquiring historical state information of the system.
In the embodiment of the invention, the interception point is embedded in the system to intercept all requests sent by the client, and when a new request arrives, the historical state information of the system is acquired.
According to one embodiment of the invention, the actual TPS and the historical processing information are obtained from a Metrics monitoring module. The embodiment of the invention uses a Metrics monitoring module to monitor the system, records the running state of the system, such as the number of requests processed per second (TPS), the average event processed by each request, the longest time consumed for processing the request, the length of a request queue waiting for processing and the like. The Metrics monitoring module can automatically update the monitoring indexes in real time by taking minutes as granularity, manual intervention is not needed, automatic monitoring is realized for flow control, and development cost is reduced.
And S120, obtaining the actual processing request number per second and the theoretical processing request number per second according to the historical state information.
According to one embodiment of the invention, the historical state information includes historical processing request number, historical starting thread total number and historical time for all threads to process each request.
According to the historical state information, obtaining the actual processing request number per second (hereinafter referred to as actual TPS), specifically: and calculating the processing request number in the last minute according to the historical processing request number, obtaining the average processing request number per second in the last minute, and taking the average processing request number per second in the last minute as the actual TPS. For example, the average TPS of the system was always 100 in the past, but 1000 requests were processed in the first 1s, and the actual TPS obtained at this time was (100 × 59+1000 × 1)/60 ═ 115.
Compared with the method that the average processing request number per second in the last minute is used as the actual TPS when the new request is received, the method and the device reduce the influence of the short-time burst request number on flow control, improve the accuracy of the flow control and ensure the maximum traffic as much as possible.
According to an embodiment of the present invention, a theoretical number of processing requests per second (hereinafter referred to as theoretical TPS) is obtained according to the historical state information, specifically: sequencing the time of processing each request of all historical threads according to the size, obtaining the median of the thread processing request time by taking the data in the middle position, and calculating by using the following formula to obtain the theoretical processing request number per second (hereinafter referred to as theoretical TPS):
theoretical TPS 1/median of thread processing request time historical starting thread total number
For example, after the system is started, 1000 threads are started for processing the request, and the median of the thread processing request time is 5s, the theoretical TPS is 200 calculated by the above formula.
According to the historical state of the system before the request is received, the median of the time for processing all the requests after the system is started is calculated, and the value is used as an index of the current processing capacity of the system, namely theoretical TPS. The median is a representative value of the whole unit mark values determined by the positions of the median in all the mark values, and is not influenced by the maximum or minimum value of the distribution number sequence, so that the representativeness of the median to the distribution number sequence is improved to a certain extent. The median of all the time after the system is started is used as the theoretical TPS, so that the processing capacity of the system can be accurately reflected, and the accuracy of flow control is improved.
Step S130, if the actual processing request number per second is less than the theoretical processing request number per second, processing the request; otherwise, the request is denied.
When a plurality of requests arrive at the same time, if the actual TPS calculated at step S120 is smaller than the theoretical TPS, all the arriving requests are processed. If the actual TPS calculated in step S120 is greater than the theoretical TPS, if the number of simultaneously arriving requests is less than the theoretical TPS, all the arriving requests are processed; if the number of simultaneously arriving requests is greater than the theoretical TPS, the number of requests that can be processed is equal to the theoretical TPS and the remaining requests are rejected.
For example, if 1000 requests are simultaneously reached, the theoretical TPS is 200 and the actual TPS is 115, then 1000 requests will all be processed, otherwise only 200 requests will be processed, and the remaining 800 requests will be rejected.
According to an embodiment of the invention, the method further comprises:
and step S140, sending the requested processing information to a Metrics monitoring module.
After the embodiment of the invention processes the request, the requested processing information is sent to the Metrics monitoring module, so that the Metrics monitoring module can update the system state information in time, further obtain the latest historical state information of the system, obtain the real-time theoretical TPS and actual TPS, and further enhance the timeliness and accuracy of flow control.
The process flow of the present invention is described below by way of an example.
Step 201, after receiving 1000 requests in the 1 st second, obtaining the historical processing request number, the historical starting thread total number of 1000 and the time of all the historical threads processing each request from the Metrics monitoring module.
Step 202, obtaining the actual TPS as 100 according to the historical processing request number.
And step 203, sequencing the time for processing each request by all the historical threads according to the size, taking the data in the middle position to obtain the median of the time for processing the requests by the threads as 5s, and calculating to obtain the theoretical TPS as 200.
And step 204, if the actual TPS is smaller than the theoretical TPS, processing the 1000 requests, and sending the processing information of the 1000 requests to the Metrics monitoring module.
If 1000 requests are received in the 2 nd second, executing:
step 301, increasing the number of historical processing requests acquired from the Metrics monitoring module by 1000, keeping the total number of historical starting threads and keeping the time for all historical threads to process each request unchanged.
Step 302, obtaining the actual TPS of (100 × 59+1000 × 1)/60 × 115 according to the historical processing request number.
And step 303, calculating to obtain the theoretical TPS of 200.
And step 304, if the actual TPS is smaller than the theoretical TPS, processing the 1000 requests, and sending the processing information of the 1000 requests to the Metrics monitoring module.
If 1000 requests are received in all of the 3 rd, 4 th, 5 th, 6 th and 7 th seconds, steps 301 to 304 are repeatedly executed.
If 1000 requests are received in the 8 th second, executing:
in step 401, the number of historical processing requests acquired from the Metrics monitoring module is 100 × 53+7000, the total number of historical starting threads and the time for all historical threads to process each request are unchanged.
Step 402, obtaining the actual TPS of (100 × 53+7000 × 1)/60 × 210 according to the historical processing request number.
And step 403, calculating to obtain the theoretical TPS of 200.
And step 404, if the actual TPS is larger than the theoretical TPS, only 200 requests are processed, 800 requests are rejected, and the processing information of the 200 processed requests is sent to the Metrics monitoring module.
The embodiment of the invention provides a flow control method, which solves the technical problems of low accuracy and poor timeliness of the existing flow control method. In the implementation of the invention, a request sent by a client is received, and historical state information is acquired; respectively obtaining the actual processing request number per second and the theoretical processing request number per second according to the historical state information; if the actual number of requests processed per second is less than the theoretical number of requests processed per second, the requests are processed. Compared with the prior art, the method and the device have the advantages that under the trigger of receiving the request sent by the client, the new theoretical processing request number per second, namely the threshold value, is obtained through real-time calculation, and the actual processing request number per second is compared to decide whether to process the request, so that the purpose of flow control is achieved, the fixed threshold value is not used, timeliness is strong, the theoretical TPS is obtained through calculation according to historical processing information, the real-time processing capability of a system can be represented, and accuracy is high.
An embodiment of the present invention further provides a flow control device, as shown in fig. 3, including:
the acquisition module is used for receiving a request sent by a client and acquiring historical state information;
the calculation module is used for respectively obtaining the actual processing request number per second and the theoretical processing request number per second according to the historical state information;
and the flow control module is used for processing the request if the actual number of the processing requests per second is less than the theoretical number of the processing requests per second.
According to one embodiment of the invention, the historical state information includes historical processing request number, historical starting thread total number and historical time for all threads to process each request.
According to an embodiment of the invention, the calculation module is further configured to: and obtaining the latest processing request number in one minute according to the historical processing request number, obtaining the latest average processing request number per second in one minute, and taking the latest average processing request number per second in one minute as the actual processing request number per second.
According to an embodiment of the invention, the calculation module is further configured to: obtaining the median of the thread processing request time according to the time of processing each request by all the historical threads, and calculating the theoretical processing request number per second according to the following formula:
theoretical number of processing requests per second 1/median of thread processing request time historical total number of starting threads
According to an embodiment of the invention, the apparatus further comprises:
and the Metrics monitoring module is used for receiving the processing information of the request sent by the flow control module and sending the historical state information to the acquisition module.
The flow control device provided by the embodiment of the invention solves the technical problems of low accuracy and poor timeliness of the existing flow control method. In the implementation of the invention, an acquisition module receives a request sent by a client and acquires historical state information; the hormone module respectively obtains the actual processing request number per second and the theoretical processing request number per second according to the historical state information; and the flow control module judges whether the actual processing request number per second is smaller than the theoretical processing request number per second, and processes the request. Compared with the prior art, the method and the device have the advantages that under the trigger of receiving the request sent by the client, the new theoretical processing request number per second, namely the threshold value, is obtained through real-time calculation, and the actual processing request number per second is compared to decide whether to process the request, so that the purpose of flow control is achieved, the fixed threshold value is not used, timeliness is strong, the theoretical TPS is obtained through calculation according to historical processing information, the real-time processing capability of a system can be represented, and accuracy is high.
The embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer instructions, and the computer instructions, when executed by a processor, implement the steps of the flow control method.
The computer storage medium provided in the embodiment of the present invention is used to execute the flow control method provided above, and therefore, the beneficial effects that can be achieved by the computer storage medium can refer to the beneficial effects in the corresponding method provided above, and are not described herein again.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus embodiment, since it is substantially similar to the method embodiment, it is relatively simple to describe, and reference may be made to some descriptions of the method embodiment for relevant points. Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
It will be understood by those skilled in the art that all or part of the processes of 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 when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method of flow control, comprising:
receiving a request sent by a client to acquire historical state information;
respectively obtaining the actual processing request number per second and the theoretical processing request number per second according to the historical state information;
and if the actual number of processing requests per second is less than the theoretical number of processing requests per second, processing the requests.
2. The method of claim 1, wherein the historical state information comprises historical processing request counts, historical starting thread counts, and historical time for all threads to process each request.
3. The method according to claim 2, wherein the obtaining of the actual number of processing requests per second based on the historical status information specifically comprises: and obtaining the latest processing request number in one minute according to the historical processing request number, obtaining the latest average processing request number per second in one minute, and taking the latest average processing request number per second in one minute as the actual processing request number per second.
4. The method according to claim 2, wherein the obtaining of the theoretical number of processing requests per second based on the historical state information specifically comprises: obtaining the median of the thread processing request time according to the time of processing each request by all the historical threads, and calculating according to the formula (1) to obtain the theoretical processing request number per second: and (3) the theoretical number of processing requests per second is 1/median of the processing request time of the thread, and the historical starting thread total number formula (1).
5. The method of claim 1, wherein the obtaining historical status information is specifically obtaining historical status information from Metrics monitoring modules.
6. A method as defined in claim 5, further comprising sending the requested processing information to the Metrics monitoring module.
7. A flow control device, comprising:
the acquisition module is used for receiving a request sent by a client and acquiring historical state information;
the calculation module is used for respectively obtaining the actual processing request number per second and the theoretical processing request number per second according to the historical state information;
and the flow control module is used for processing the request if the actual number of the processing requests per second is less than the theoretical number of the processing requests per second.
8. The apparatus of claim 7, wherein the historical state information comprises a historical number of requests to process, a historical total number of threads to start, and a historical time for all threads to process each request.
9. The apparatus of claim 7, further comprising:
and the Metrics monitoring module is used for receiving the processing information of the request sent by the flow control module and sending the historical state information to the acquisition module.
10. A computer storage medium comprising computer instructions which, when executed by a processor, implement the flow control method of any one of claims 1-6.
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| CN114710447A (en) * | 2020-12-16 | 2022-07-05 | 百寻信息科技(上海)有限公司 | Balanced advertisement flow control method and system |
| CN114710447B (en) * | 2020-12-16 | 2024-05-03 | 百寻信息科技(上海)有限公司 | Balanced advertisement flow control method and system |
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Application publication date: 20200428 |