CN114285780A - Radar network testing system and method based on priority queue - Google Patents
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Abstract
The single ping test operation can only determine the connectivity and the time delay state of the node, cannot ensure the normal data function of the node, and is not beneficial to fault location, function test, continuity test and the like in the debugging process of the radar system. In actual work, a network fault of a radar system is one of common faults, wherein the network instability problem causes obstruction to debugging work due to low fault recurrence rate and difficulty in determining fault occurrence time, and manpower and time are consumed. Therefore, the research on the efficient network test method has important significance for the debugging work of the radar. The invention provides a radar network test system and a test method based on priority queues. The nodes of the high-priority queue have shorter test period and flexible test mode. In the test process, a time slice polling algorithm or a queue interleaving algorithm is applied to carry out connectivity test, message period detection and message content detection on the radar system nodes.
Description
Technical Field
The invention belongs to the field of radar network testing, and particularly relates to a radar network testing system and method based on a priority queue.
Background
The conventional network test method calls a system Internet packet detector program to send an ICMP request message to a target node by means of a command 'ping + IP address' of a Windows system console, can judge whether the target node can be reached through return information displayed on the console, and infers whether the TCP/IP parameter setting of the node is correct, whether the operation is normal, whether the network is smooth and other states. However, the method has a limited number of test nodes, and does not have a systematic recording function, and especially for large-scale equipment, network node tests of nearly hundreds of different IP addresses cannot be performed synchronously, and the operation is complicated. In addition, a single ping test operation can only determine the connectivity and the time delay state of the node, and the data function of the node cannot be ensured to be normal, which is not beneficial to fault location, function test, continuity test and the like in the debugging process of the radar system. In actual work, a network fault of a radar system is one of common faults, wherein the network instability problem causes obstruction to debugging work due to low fault recurrence rate and difficulty in determining fault occurrence time, and manpower and time are consumed. Therefore, the research on the efficient network test method has important significance for the debugging work of the radar.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a radar network testing system and a radar network testing method based on priority queues. The nodes of the high-priority queue have shorter test period and flexible test mode. In the test process, a time slice polling algorithm or a queue interleaving algorithm is applied to carry out connectivity test, message period detection and message content detection on the radar system nodes. The radar network test system with the visual interface is developed based on the test method, has the functions of node management, network monitoring, fault recording and the like, can reduce the redundancy of network test of large equipment, and enhances the overall management capability of the network. Compared with the conventional radar network test method, the intelligent and automatic radar network test is realized, the use is convenient, and the test effect is ideal.
The test system is based on a C/S architecture, and the test and the record of each node of the system are realized under the condition of not changing the functions of the test nodes; the test system specifically comprises a node information processing module, a network test management module, a result processing module and an information management module; wherein the content of the first and second substances,
the node information processing module provides a test object and necessary information for network test, and comprises a node information file reading module, a tree structure generating module and a priority queue building module; when the system is started, the node information file reading module firstly reads a preset node information file, wherein the preset node information file comprises a cabinet number, a plug box number, a slot number, a node IP, a node initial priority and a node initial test mode to which the node belongs; the tree structure generation module generates a tree structure from the nodes according to the cabinet, the subrack and the slot position based on the node information file, and leaf nodes store various information of the network nodes; the priority queue building module builds corresponding high, medium and low priority queues according to the initial priority of the nodes;
the network test management module comprises a test object selection module, a test parameter customization module, a test method selection module and a test process control module; acquiring all node information of the radar system according to the node information processing module, and selecting a node for testing by the test object selection module according to the actual node function state; the test parameter customizing module customizes test parameters, including test times, test time, request times, timeout value, inter-queue traversal mode and queue weight; the test mode selection module determines a test mode of the test node according to the test mode information; the test process control module realizes the starting, the pause, the continuation and the stop of the test;
the result processing module comprises a test state real-time display module, a priority adjustment module, a test information statistic module and a test result processing module; the test state real-time display module displays the state information of each node in real time in the test process, adjusts the test mode and the priority of the corresponding node configured by the priority module according to the information, and adds a higher priority queue to the nodes with continuity requirements on functions or high failure rate; after the test is finished, the test information statistical module displays statistical information of tested nodes, and the test result processing module finishes the operations of saving, initializing and clearing a screen of a test result;
the information management module comprises a node information query module, a node information change module and a test result check module, and is used for realizing query maintenance, information change and historical test result search of the existing node information.
Furthermore, the test mode adopts a mode of combining active test and passive test and can be switched with each other, wherein the active test is applied to the connectivity test of the nodes, and the message period detection and the message content detection are both passive tests.
A node testing method of a radar network testing system based on priority queues comprises the following steps that when a testing process is started, each node to be tested is added into a high priority queue, a middle priority queue and a low priority queue according to a preset priority, and the nodes in the priority queues are scheduled by adopting a time slice polling method based on proportional fairness, and the method specifically comprises the following steps: the nodes between the queues are tested in turn according to continuous time, and priority queues are setiWeight p i With n nodes, the sum of the weights of each queue is expressed asP=
Defining a queueiThe temporal weight of (c) is:
for a given time sliceTQueue ofiThe test times obtained were:
namely att i Within time, the test system pair is in queueiThe nodes are tested in sequence, and in the total system test time, the test system conducts polling test on the nodes according to time slices with equal time.
Further, a queue interleaving method can be used for testing, when the testing process starts, each node to be tested is added into a high priority queue, a medium priority queue and a low priority queue according to a preset priority, and the nodes in the priority queues are scheduled by adopting the queue interleaving method, specifically: the node test between the queues is carried out alternatively, and the queues are setiThe number of continuous tests of the middle node isc i ，c i According to the queue priority from high to low, the value is from large to small, starting from the queue with the highest priority, and every time the queue is processedc i And the next test of the queue node enters the next test of the queue node, and the next test of the queue node selects the nodes in the queue with the lower priority, and the selection is performed according to the node sequence each time.
The invention has the beneficial effects that:
the invention can simultaneously carry out the test on a plurality of system links in parallel and has strong universality and expansibility. The network test planning of large military comprehensive equipment is established, the network test coverage is complete, the intellectualization and automation of the radar network test are realized, the working efficiency is improved, and the test effect is ideal.
Drawings
Fig. 1 is a general structure diagram of a radar network test system.
FIG. 2 is a schematic diagram of a slice polling algorithm.
Fig. 3 is a diagram illustrating a queue interleaving algorithm.
FIG. 4 is a flow chart of a priority queue based node testing algorithm.
Fig. 5 is a service flow chart of a radar network test system.
Fig. 6 is a radar network test model.
FIG. 7 is a schematic diagram of a program interface of a radar network system test system.
Detailed description of the preferred embodimentsthe present invention will now be described in detail with reference to the accompanying drawings.
The invention stores the information of each node of the radar system in a tree structure, combines an Internet packet detector program of 'ping + IP address' with a state monitoring method based on UDP message period and content detection, adopts a node testing algorithm based on priority queues and a node traversing strategy based on time slice polling and queue interleaving, and applies QT5.9 to develop a radar network testing system with a visual interface.
Functional module division of radar network test system
The function of the system is realized by adopting a modularized design method, so that the modules are kept in a loose coupling structure, and the change among the modules can not cause mutual influence or has little influence. The specific functional modules of the system are divided as follows:
the node information processing module: the system comprises a reading submodule of a node information file, a generating submodule of a tree structure and a priority queue building submodule, and provides a test object and necessary information for network test. When software is started, a preset node information file is firstly read, wherein the preset node information file comprises a cabinet number, a plug-in box number, a slot number, a node IP, a node initial priority (high, medium and low, three levels), a node initial test mode (one or more modes of connectivity test, UDP message content detection and UDP message period monitoring), the software generates a tree structure for the node according to the cabinet, the plug-in box and the slot position through the information, leaf nodes store various information of network nodes, the information is addressed by pointers, the query and the management are convenient, and corresponding high, medium and low priority queues are added.
The network test management module: the device comprises a test object selection submodule, a test parameter customization submodule, a test method selection submodule and a test process control submodule. The node information processing module acquires all node information of the radar system, and selects part of nodes to test according to the actual node function state, so that the pertinence and the test efficiency of network test can be improved. The test parameters comprise test times, test time, request times, timeout values, inter-queue traversal modes, queue weights and the like, and the test accuracy can be improved by customizing the test parameters according to actual conditions. And the software background determines the test mode of the test node according to the initial or changed test mode information. Finally, test process control may enable the start, pause, continue, and stop of the test.
A result processing module: the device comprises a test state real-time display submodule, a priority adjustment submodule, a test information statistics submodule and a test result processing submodule. The software displays the state information of each node in real time in the testing process, flexibly configures the testing mode and priority of the corresponding node according to the information background, and adds the node with continuity requirement on the function or high failure rate into a higher priority queue. And after the test is finished, the statistical information of the tested nodes can be displayed, and the operations of saving, initializing, clearing and the like of the test result are provided.
The information management module: the node information query submodule, the node information modification submodule and the test result check submodule are included, query maintenance and historical test result search can be carried out on the existing node information, and the node information query submodule, the node information modification submodule and the test result check submodule can play an important role in debugging work.
Second, overall structure design of radar network test system
The test system is based on a C/S framework, namely a client and server mode, the processing and storage capacity of the client can be fully exerted by adopting the mode, and the test and the record of each node of the system can be realized by a debugging computer provided with the radar network test system client under the condition of not changing the function of the test node. The test mode adopts a mode of combining active test and passive test and can be flexibly switched, wherein the active test is only applied to the connectivity test of the nodes, the message period detection and the message content detection are both passive tests, and the passive test does not increase extra network flow and change the topological structure of the network, so that the normal operation of the network is not interfered, and the safety problems of network storm, service denial and the like can be avoided. And the node information and the test result are stored by adopting a txt file, so that the node information and the test result are convenient to check and modify. The result storage adopts date-time as the file name, so that the checking operation can be conveniently carried out, and the specific structural block diagram of the system is shown in figure 1.
Node testing algorithm based on priority queue
Aiming at the characteristics of large node quantity and diversified working modes of the novel integrated radar system, the patent provides a node testing algorithm based on a priority queue, and for the key concerned nodes, the testing mode is more comprehensive and the testing frequency is higher. Compared with a sequential testing method, the method has stronger pertinence, gives consideration to the associated nodes, makes full use of resources and improves the testing efficiency.
When the test process starts, each node to be tested is added into a high priority queue, a medium priority queue and a low priority queue according to a preset priority, and the patent provides a time slice polling algorithm and a queue interleaving algorithm based on proportional fairness to schedule the nodes in the priority queues.
The time slice polling algorithm based on the proportional fairness: the nodes between the queues are tested in turn according to continuous time, and the method is suitable for a scene that the nodes between the queues are not relevant. Priority queueiWeight p i Having n of i Each node, the sum of the weights of each queue is expressed asP=p 1+p 2+p 3Defining a queueiThe temporal weight of (c) is:
for a given time sliceTQueue ofiThe test times obtained were:
namely att i Within time, the test system pair is in queueiThe nodes of (2) adopt sequential testing, and in the total system testing time, the testing system performs polling testing on the nodes according to time slices with equal time, as shown in fig. 2.
And (3) a queue interleaving algorithm: the inter-queue node testing is performed in a staggered mode, and the method is suitable for scenes that the inter-queue nodes have certain relevance. Setting queuesiNumber of consecutive tests of middle nodec i I.e. each timec i Next time the test of the queue node is performed, the next node test selects the nodes in the queue with the lower priority, and each selection is performed in sequence. For example, when the number of consecutive tests of the high, medium, and low priority queues is 3, 2, and 1, respectively, the test order of each node is as shown in fig. 3.
The initial value of each queue weight in the time slice polling algorithm is respectively 5, 2 and 1, and the initial value of the time slice length is 30 s; the continuous testing times of each queue in the queue interleaving algorithm are respectively 3, 2 and 1. The parameters can be artificially changed according to actual conditions. The two algorithms provide a node traversal method for network test, and manual selection can be performed according to the actual state of the node to be tested in the debugging process. The node testing algorithm flow based on the priority queue is shown in fig. 4.
Fourthly, system business process
In the actual use process of the radar network testing method, a user only needs to select a node to be tested and set testing parameters such as testing time, testing times and the like, the testing system can automatically monitor the corresponding node, testing statistical information can be obtained when the testing time reaches or the user terminates the testing, and the service flow is as shown in fig. 5.
According to the test model established in the figure 6, as long as one kilomega network cable is connected with the switch, the cabinet 1, the cabinet 2 and the like are directly connected with the switch through the network, the optical fiber network equipment in the cabinet is converted into the network through the photoelectric switching equipment and then is connected with the switch, the computer realizes the effect of interconnection communication with all equipment in the cabinet, and the network link full coverage test is realized through the network cable.
The test procedure was as follows:
step 1: collecting the network ports of the equipment through a switch;
step 2: collecting the optical fiber network ports through an optical switch;
and step 3: connecting the test computer with the switch, and configuring a corresponding IP address;
and 4, step 4: and starting a network test interface program as shown in fig. 7, selecting 'test equipment', 'parameter configuration', starting a 'test function', 'log operation' and the like, and carrying out continuous automatic test on the radar network.
The present invention is not limited to the above-described specific embodiments, and various modifications and variations are possible. Any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention should be included in the scope of the present invention.
Claims (4)
1. A radar network test system based on priority queue is characterized in that: the test system is based on a C/S architecture, and the test and the record of each node of the system are realized under the condition of not changing the functions of the test nodes; the test system specifically comprises a node information processing module, a network test management module, a result processing module and an information management module; wherein the content of the first and second substances,
the node information processing module provides a test object and necessary information for network test, and comprises a node information file reading module, a tree structure generating module and a priority queue building module; when the system is started, the node information file reading module firstly reads a preset node information file, wherein the preset node information file comprises a cabinet number, a plug box number, a slot number, a node IP, a node initial priority and a node initial test mode to which the node belongs; the tree structure generation module generates a tree structure from the nodes according to the cabinet, the subrack and the slot position based on the node information file, and leaf nodes store various information of the network nodes; the priority queue building module builds corresponding high, medium and low priority queues according to the initial priority of the nodes;
the network test management module comprises a test object selection module, a test parameter customization module, a test method selection module and a test process control module; acquiring all node information of the radar system according to the node information processing module, and selecting a node for testing by the test object selection module according to the actual node function state; the test parameter customizing module customizes test parameters, including test times, test time, request times, timeout value, inter-queue traversal mode and queue weight; the test mode selection module determines a test mode of the test node according to the test mode information; the test process control module realizes the starting, the pause, the continuation and the stop of the test;
the result processing module comprises a test state real-time display module, a priority adjustment module, a test information statistic module and a test result processing module; the test state real-time display module displays the state information of each node in real time in the test process, adjusts the test mode and the priority of the corresponding node configured by the priority module according to the information, and adds a higher priority queue to the nodes with continuity requirements on functions or high failure rate; after the test is finished, the test information statistical module displays statistical information of tested nodes, and the test result processing module finishes the operations of saving, initializing and clearing a screen of a test result;
the information management module comprises a node information query module, a node information change module and a test result check module, and is used for realizing query maintenance, information change and historical test result search of the existing node information.
2. The priority queue based radar network testing system of claim 1, wherein: the testing mode adopts a mode of combining active testing and passive testing and can be switched mutually, wherein the active testing is applied to the connectivity testing of the nodes, and the message period testing and the message content testing are both passive testing.
3. A node test method of the radar network test system based on the priority queue according to claim 1 or 2, characterized in that: testingWhen the process starts, each node to be tested is added into a high priority queue, a medium priority queue and a low priority queue according to a preset priority, and the nodes in the priority queues are scheduled by adopting a time slice polling method based on proportional fairness, which specifically comprises the following steps: the nodes between the queues are tested in turn according to continuous time, and priority queues are setiWeight p i With n nodes, the sum of the weights of each queue is expressed asP=
Defining a queueiThe temporal weight of (c) is:
for a given time sliceTQueue ofiThe test times obtained were:
namely att i Within time, the test system pair is in queueiThe nodes are tested in sequence, and in the total system test time, the test system conducts polling test on the nodes according to time slices with equal time.
4. A node test method of the radar network test system based on the priority queue according to claim 1 or 2, characterized in that: when the test process starts, each node to be tested is added into a high priority queue, a medium priority queue and a low priority queue according to a preset priority, and the nodes in the priority queues are scheduled by adopting a queue-based interleaving method, which specifically comprises the following steps: the node test between the queues is carried out alternatively, and the queues are setiThe number of continuous tests of the middle node isc i ，c i According to the queue priority from high to low, the value is from large to small, starting from the queue with the highest priority, and every time the queue is processedc i Testing of the next queue nodeAnd entering the test of the next queue node, wherein the test of the next node selects the nodes in the queue with the lower priority, and the selection is performed according to the node sequence each time.
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