CN115208806A - Method and device for testing response capability of NTP (network time protocol) server - Google Patents
Method and device for testing response capability of NTP (network time protocol) server Download PDFInfo
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- CN115208806A CN115208806A CN202210803310.1A CN202210803310A CN115208806A CN 115208806 A CN115208806 A CN 115208806A CN 202210803310 A CN202210803310 A CN 202210803310A CN 115208806 A CN115208806 A CN 115208806A
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- 238000012360 testing method Methods 0.000 title claims abstract description 115
- 230000004044 response Effects 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010998 test method Methods 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000004043 responsiveness Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 238000004088 simulation Methods 0.000 abstract description 3
- 238000007726 management method Methods 0.000 description 18
- 230000003993 interaction Effects 0.000 description 12
- 238000013523 data management Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
- H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
Abstract
The invention discloses a method and a device for testing the response capability of an NTP server, which relate to the field of server testing, and the method comprises the steps of importing a NTP client parameter generation rule, a test parameter and a tested NTP server IP address; acquiring the MAC address of the tested NTP server; generating an NTP time synchronization request message; sending an NTP time synchronization request message to an NTP server, and enabling S1= S1+1; receiving the analyzed NTP time synchronization response message, and enabling S2= S2+1; judging whether to stop, if so, going to step 7, otherwise, going to step 4; analyzing the NTP time synchronization response message, the sending quantity S1 and the receiving quantity S2 to determine the test result of the NTP server; the method supports the simulation of generating, receiving and analyzing NTP messages by a plurality of NTP client sides through the maximum bandwidth of a connection network between the test equipment and the tested NTP server, realizes the test of the processing capacity of the NTP server, adopts a hardware NTP message generator based on the FPGA to automatically generate NTP messages according to the simulated NTP client side parameters, and realizes the simulation of the sending of the NTP customer service side through the maximum bandwidth of the connection network.
Description
Technical Field
The invention relates to the field of server testing, in particular to a method and a device for testing response capability of an NTP server.
Background
NTP is a standard network protocol for time synchronization in the Internet, which aims to deliver uniform and standard time on the Internet, and the specific implementation scheme is to set a plurality of clock source websites (namely NTP servers) on the network to provide time service for users, so that the time of various user equipment in the network is synchronized to coordinated Universal Time (UTC).
There are three kinds of working modes of NTP, which are: client/server mode, symmetric mode, and broadcast/multicast mode. The client/server mode is the most common and extensive one, the NTP client actively initiates a time synchronization request to the NTP server, the NTP server passively replies time synchronization reply, and the NTP client synchronizes the system time according to the NTP algorithm after receiving the time synchronization response.
With the rapid increase of the number of user equipment of the NTP network time service, higher requirements are put forward on the performance of the NTP server, and particularly, the response capability of the NTP server also needs to be reasonably evaluated. When some local area networks are provided with NTP servers, the arrangement scheme of the NTP servers can be established according to the number of users needing time service in the local area networks.
At present, the response capability test method of the NTP server mainly adopts a method of simulating NTP time synchronization request messages by software, and the sending rate of the NTP time synchronization request messages can not reach the maximum limit of network bandwidth.
Disclosure of Invention
The invention aims to solve the problems and designs a method and a device for testing the response capability of an NTP server.
The invention realizes the purpose through the following technical scheme:
a test method for response capability of an NTP server comprises the following steps:
step 1, importing a parameter generation rule, a test parameter and an IP address of a tested NTP server of an NTP client;
step 2, obtaining the MAC address of the tested NTP server;
step 3, generating an NTP time synchronization request message of the NTP client;
step 4, sending NTP time synchronization request messages to an NTP server, and enabling the sending number S1 to be = S1+1;
step 5, receiving and analyzing NTP time synchronization response messages of the NTP server, and enabling the receiving quantity S2= S2+1;
step 6, judging whether to stop testing, if so, entering step 7, otherwise, returning to step 4;
and 7, analyzing the NTP time synchronization response messages, the current sending quantity S1 and the current receiving quantity S2, and determining the test result of the NTP server.
The test device for the response capability of the NTP server is applied to the test method for the response capability of the NTP server, and comprises the following steps:
a reservoir; the storage is used for storing a computer program;
an actuator; the executor is used for executing a computer program, and the computer program is executed to realize the test method for the response capability of the NTP server.
The invention has the beneficial effects that: the method supports simulating the generation, receiving and analysis of NTP messages by a plurality of NTP client sides through the maximum bandwidth of a connection network between the testing equipment and the NTP server to be tested, realizes the testing of the processing capacity of the NTP server, adopts a hardware NTP message generator based on the FPGA to automatically generate NTP messages according to the simulated NTP client side parameters, and realizes the simulation of the transmission of the NTP customer service side through the maximum bandwidth of the connection network; the method adopts a hardware mode to complete the receiving and analysis of the NTP message based on the FPGA, ensures that the receiving and analysis of the response message of the NTP server can be completed by the maximum bandwidth of a connecting network, and realizes the processing capacity test of the NTP server.
Drawings
Figure 1 is a flow chart of a method of testing the responsiveness of an NTP server;
FIG. 2 is a schematic diagram of a test system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, or orientations or positional relationships conventionally placed when the product of the present invention is used, or orientations or positional relationships conventionally understood by those skilled in the art, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings.
A test method for response capability of an NTP server comprises the following steps:
step 1, importing a parameter generation rule, a test parameter and an IP address of a tested NTP server of an NTP client.
And step 2, sending an ARP request message to the tested NTP server to obtain the MAC address of the tested NTP server.
And 3, generating an NTP time synchronization request message of the NTP client according to the MAC address and the IP address of the NTP server and the NTP protocol.
And 4, sending NTP time synchronization request messages to an NTP server, and enabling the sending number S1= S1+1.
And 5, receiving, analyzing and extracting relevant timestamp information in the NTP time synchronization response message, writing the relevant timestamp information into a test data cache, enabling the receiving quantity to be S2= S2+1, enabling the relevant timestamp information to comprise a sending timestamp T1 and a receiving timestamp T2 corresponding to the NTP time synchronization request message, and enabling a sending timestamp T3 and a receiving timestamp T4 of the NTP time synchronization response message.
Step 6, according to whether the current testing time length does not exceed the preset testing time length or not, if yes, continuing the test, and returning to the step 4; otherwise, the test is stopped and step 7 is entered.
And 7, calculating the time synchronization performance of the tested NTP server by using a time synchronization algorithm in the NTP protocol according to the relevant timestamp information, and taking the number of the received effective NTP time synchronization response messages in unit time as the maximum response capacity of the tested NTP server.
The test device for the response capability of the NTP server is applied to the test method for the response capability of the NTP server, and comprises the following steps:
a reservoir; the storage is used for storing a computer program;
an actuator; the executor is used for executing a computer program, and the computer program is executed to realize the test method for the response capability of the NTP server.
A test system for NTP server response capability comprising:
an NTP test interface module; the NTP test interface module is a necessary functional component for accessing the Ethernet, and the main function is to send and receive data frames of the Ethernet;
a test management interface module; the test management interface module is a data transmission module between the test system and the man-machine interaction system, and the man-machine interaction system can be a computer or other equipment. In order to adapt to the high-speed transmission characteristic of test data acquisition, the test management interface module can be a PCIE, a USB or an Ethernet component for high-speed data transmission;
a system time management module; the system time management module is used for providing system time for the test system, and the format of the system time is a 64-bit unsigned counter conforming to NTP time, wherein the upper 32 bits are integer seconds, and the lower 32 bits are decimal seconds. The system time is used for recording a sending time stamp and a receiving time stamp of the NTP time synchronization message tested by the test system in the NTP server. The system time management module receives the reference time of the time frequency reference module, compares the system time with the reference source time at the quasi-second moment of the reference time, and automatically calibrates the system time when the deviation of the system time and the reference source time exceeds a set range;
a time frequency reference module: the time frequency reference module is used for calibrating the system time of the test system and processing the frequency source signal to generate a working clock of the system time management module;
NTP test management module; the NTP test management module sends an ARP request message for analyzing the MAC address of the tested NTP server; analyzing the ARP response message and acquiring the MAC address of the NTP server; the rule for automatically generating NTP client parameters automatically generates NTP client information and manages the NTP client information; sending NTP time synchronization request messages to a tested NTP server at set sending rate and equal time intervals within the time set by the testing parameters, and counting the sending quantity S1; receiving and analyzing effective NTP time synchronization response messages from an NTP server and counting the receiving quantity S2; extracting relevant timestamps of each effective NTP time synchronization response message and writing the relevant timestamps into a test data cache of the test data management module in sequence; outputting the S1 and the S2 to a test data management module and stopping the current test after the test duration meets the set test time
The test data management module is a test data management and parameter configuration unit of the test system, and has the main functions of test data cache management, package of test data in the test data cache, uploading to the man-machine interaction system, analysis of relevant configuration parameters of the man-machine interaction system to the NTP client and output of the configuration parameters to the NTP test management module. The test data caching management adopts paging management, and after each full page of test data is uploaded to the human-computer interaction system actively for time synchronization performance analysis of the tested NTP server. And after the current test is stopped, uploading the S1 and the S2 to a man-machine interaction system for calculating the maximum response capability of the tested NTP server in the current scene.
The detailed test method is as follows:
1. before testing, especially when time synchronization performance testing is required, the test system needs to access a standard time source and a frequency source and complete system time calibration.
2. The man-machine interaction system sets the IP address of the tested NTP service, the NTP client parameter generation rule and the test parameters through the test management interface. The NTP client parameter generation rules mainly include the number of NTP clients, the range of automatically generating IP addresses and MAC addresses, whether to use MD5 message digests, and the like. The IP address and the MAC address can be automatically generated or manually set, and the multicast and broadcast addresses are actively avoided during automatic generation. The test parameters mainly comprise test time and NTP time synchronization request message sending rate, and the NTP time synchronization request message is sent by default by using the line speed. And the NTP test management module loads the setting parameters, automatically generates and manages the related parameters of the NTP client according to the parameter generation rule of the NTP client, and uses the related parameters in a polling mode when subsequently sending the NTP time synchronization request message.
And 3. After the NTP test management module loads the IP address of the tested server, using the generated IP address and MAC address of any NTP client to start ARP request message framing. And waiting for the ARP response message of the tested NTP server after the ARP request message is sent. The NTP test management module analyzes the ARP response message from the tested NTP server and then extracts and latches the MAC address of the ARP response message.
And 4, NTP time synchronization request message sending:
1) The NTP test management module calculates an initial value T of the packet sending timer according to the set NTP time synchronization request message sending rate, and generates an NTP time synchronization request message sending mark and reloads the initial value T when the timer is set. After the NTP time synchronization request message sending mark is generated, the current system time is acquired as the sending timestamp T1 of the NTP time synchronization request message, and the NTP time synchronization request message is automatically generated according to the specification of RFC5095 by the NTP client information which needs to send the NTP time synchronization request message.
2) And sending the NTP time synchronization request message of the NTP client to a tested NTP server, and counting the sending quantity S1 of the NTP time synchronization request messages.
3) And outputting the NTP time synchronization request message sending quantity S1 to the test data management module when the test duration meets the set test time, and finishing the sending process.
5. Receiving an NTP time synchronization reply message of the detected NTP server:
1) And receiving the NTP time synchronization reply message of the tested NTP server, and analyzing an effective NTP time synchronization reply message which is sent by the tested NTP server to the simulated NTP client side of the test system.
2) Extracting T1 (original Timestamp), T2 (Receive Timestamp), T3 (Transmit Timestamp) and the receiving Timestamp of the message from the effective NTP time synchronization reply message as T4 (Destination Timestamp) and writing the Timestamp into a test data cache of a test data management module according to a certain storage sequence. And the test data management module transmits the test data to the man-machine interaction system for time synchronization performance analysis after the test data cache is fully written with one page according to the storage state of the test data cache. And meanwhile, counting the receiving quantity S2 of the effective NTP time synchronization reply messages.
3) And outputting the receiving quantity S2 of the NTP time synchronization reply messages to the test data management module when the test duration meets the set test time, and finishing the receiving process.
6. After the receiving and sending processes are finished, the test data management module uploads the sending quantity S1 and the receiving quantity S2 to the man-machine interaction system, and the man-machine interaction system comprehensively analyzes related test data uploaded by the test system and calculates the time synchronization performance and the maximum response capability of the tested NTP server.
The method and the system for testing the response capability of the NTP server realize a hardware processing network protocol by using the FPGA, can ensure that the sending of the NTP time synchronization request message and the receiving and analyzing of the NTP time synchronization response message can reach the line speed, and can test the response capability of the NTP server. Different test parameters and NTP client parameter generation rules are set according to the man-machine interaction system, and the test of multiple scene applications can be completed. When the test system accesses a standard time source and a frequency source, the origin Timestamp is inserted into the NTP synchronization time request message in real time, meanwhile, the relevant Timestamp data of the received NTP time synchronization response message is cached and transmitted to the man-machine interaction system, and the test of the time synchronization performance of the tested NTP server is completed. By integrating the test functions, the test system can adapt to multi-scenario test, the whole test flow is simple to set, and the test difficulty and the test workload are greatly reduced.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (8)
1. A method for testing the response capability of an NTP server, comprising:
step 1, importing a parameter generation rule, a test parameter and an IP address of a tested NTP server of an NTP client;
step 2, obtaining the MAC address of the tested NTP server;
step 3, generating an NTP time synchronization request message of the NTP client;
step 4, sending NTP time synchronization request messages to an NTP server, and enabling the sending number S1 to be = S1+1;
step 5, receiving and analyzing NTP time synchronization response messages of the NTP server, and enabling the receiving quantity S2= S2+1;
step 6, judging whether to stop testing, if so, entering step 7, otherwise, returning to step 4;
and 7, analyzing the NTP time synchronization response messages, the current sending quantity S1 and the current receiving quantity S2, and determining the test result of the NTP server.
2. The method for testing the response capability of the NTP server according to claim 1, wherein in step 3, the NTP time synchronization request message is generated according to the NTP protocol based on the MAC address and the IP address of the NTP server.
3. The method for NTP server responsiveness according to claim 1, wherein in step 5, relevant timestamp information in the NTP time synchronization response message is analyzed and extracted, and written into the test data cache.
4. The method for testing the response capability of the NTP server according to claim 1, wherein in step 5, the related timestamp information includes a transmission timestamp T1 and a reception timestamp T2 of the corresponding NTP time synchronization request message, and a transmission timestamp T3 and a reception timestamp T4 of the NTP time synchronization response message.
5. The method for testing the response capability of the NTP server according to claim 1, wherein in step 6, the test is continued if yes, and the test is stopped if not, according to whether the current test duration does not exceed the preset test duration.
6. The method for testing the response capability of the NTP server according to claim 3, wherein in step 7, the time synchronization performance of the NTP server under test is calculated from the relevant timestamp information by using a time synchronization algorithm in the NTP protocol, and the number of valid NTP time synchronization response messages received in a unit time is used as the maximum response capability of the NTP server under test.
7. The method for testing the response capability of an NTP server according to claim 1, wherein in step 2, an ARP request message is sent to the NTP server under test to obtain the MAC address of the NTP server under test.
8. A test apparatus for NTP server responsiveness, applied to a test method for NTP server responsiveness according to any one of claims 1 to 7, comprising:
a reservoir; the storage is used for storing a computer program;
an actuator; an executor for executing a computer program, the computer program when executed implementing a method for testing the responsiveness of an NTP server according to any one of claims 1-7.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117453505A (en) * | 2023-10-30 | 2024-01-26 | 中国电子技术标准化研究院 | Device and method for calibrating time parameters of software performance testing tool |
| CN117560110A (en) * | 2024-01-12 | 2024-02-13 | 深圳市太铭科技有限公司 | NTP time service method and system for high access request |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043461A (en) * | 2007-04-24 | 2007-09-26 | 华为技术有限公司 | Method for testing DHCPv6 service and client |
| WO2018084808A1 (en) * | 2016-11-04 | 2018-05-11 | Singapore University Of Technology And Design | Computer-implemented method and data processing system for testing device security |
| CN108322281A (en) * | 2018-05-14 | 2018-07-24 | 上海市计量测试技术研究院 | Time calibration in network service based on NTP and assessment system and method |
| KR20190094499A (en) * | 2018-02-05 | 2019-08-14 | 맥슨씨아이씨 주식회사 | apparatus for testing load capacity of ptp/ntp server |
| CN111447302A (en) * | 2020-03-30 | 2020-07-24 | 山东华辰连科通信网络有限公司 | Method and system for simulating multi-client to test DHCP (dynamic host configuration protocol) by using raw socket |
| CN114448823A (en) * | 2022-01-27 | 2022-05-06 | 苏州浪潮智能科技有限公司 | NFS service testing method and system and electronic equipment |
-
2022
- 2022-07-07 CN CN202210803310.1A patent/CN115208806B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043461A (en) * | 2007-04-24 | 2007-09-26 | 华为技术有限公司 | Method for testing DHCPv6 service and client |
| WO2018084808A1 (en) * | 2016-11-04 | 2018-05-11 | Singapore University Of Technology And Design | Computer-implemented method and data processing system for testing device security |
| KR20190094499A (en) * | 2018-02-05 | 2019-08-14 | 맥슨씨아이씨 주식회사 | apparatus for testing load capacity of ptp/ntp server |
| CN108322281A (en) * | 2018-05-14 | 2018-07-24 | 上海市计量测试技术研究院 | Time calibration in network service based on NTP and assessment system and method |
| CN111447302A (en) * | 2020-03-30 | 2020-07-24 | 山东华辰连科通信网络有限公司 | Method and system for simulating multi-client to test DHCP (dynamic host configuration protocol) by using raw socket |
| CN114448823A (en) * | 2022-01-27 | 2022-05-06 | 苏州浪潮智能科技有限公司 | NFS service testing method and system and electronic equipment |
Non-Patent Citations (3)
| Title |
|---|
| FERNAND QUARTIER: ""Mainatream Components for Near Hard Real-Time Distributed Simulation and Testing"", 《2014 IEEE/ACM 18TH INTERNATIONAL SYMPOSIUM ON DISTRIBUTED SIMULATION AND REAL TIME APPLICATIONS》, 31 December 2014 (2014-12-31) * |
| 吴鹏;华宇;张旭海;: ""NTP服务器的响应阈值测试软件设计"", 《时间频率学报》, no. 01 * |
| 吴鹏;华宇;张旭海;: ""NTP服务器的响应阈值测试软件设计"", 《时间频率学报》, no. 01, 15 January 2017 (2017-01-15) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117453505A (en) * | 2023-10-30 | 2024-01-26 | 中国电子技术标准化研究院 | Device and method for calibrating time parameters of software performance testing tool |
| CN117560110A (en) * | 2024-01-12 | 2024-02-13 | 深圳市太铭科技有限公司 | NTP time service method and system for high access request |
| CN117560110B (en) * | 2024-01-12 | 2024-04-26 | 深圳市太铭科技有限公司 | NTP time service method and system for high access request |
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