CN103560928A - Method and system for testing forwarding performance of network equipment - Google Patents
Method and system for testing forwarding performance of network equipment Download PDFInfo
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Abstract
The invention provides a method and system for testing the forwarding performance of network equipment. The method includes the steps that generated test data are transmitted to tested equipment at a preset rate, and then the test data forwarded back from the tested equipment are received; the rate of transmitting the test data is controlled through CPU clock periodicity in a TSC register, and number values of the TSC register when transmitting and receiving the test data are recorded; meanwhile, the test data are transmitted to the tested equipment through a transmitting buffer area of a network card, and then the test data forwarded back by the tested equipment are received through a receiving buffer area of the network card; according to the recorded number values of the TSC register, time required in the whole testing process from transmitting the test data to receiving the test data forwarded back from the tested equipment is counted, and then forwarding performance parameters of the tested equipment are acquired. According to the method and system, testing cost can be lowered, the rate of transmitting the test data is accurately controlled, and the test data are quickly received and transmitted.
Description
Technical field
The present invention relates to the technical field of measurement and test of the network equipment, more specifically, relate to a kind of method and system of network apparatus test forwarding performance.
Background technology
Be accompanied by the continuous expansion of internet scale, the kind of the network equipment putting into effect and number are also at rapid growth, and various network equipment organic assembling become whole internet.In internet, network equipment forwarding performance directly affects effective performance of internet overall performance, therefore, the user of the network equipment needs conveniently, accurately and rapidly measures the forwarding performance of the network equipments such as router, switch, fire compartment wall, to obtain throughput, time delay, TCP concurrent connection number, the TCP connection of these network equipments, sets up the performance parameters such as speed, HTTP transaction rate, HTTP transmission rate.
Mainly (for example: the forwarding performance that the XM2 type network tester of IXIA company) carrys out network apparatus test use special-purpose performance testing apparatus at present.By using these high performance professional test instruments, can carry out high accuracy, test fast to the forwarding performance of various network device, but that these professional test instruments exist is expensive, test port negligible amounts, configuration flexibility is poor, initialization is slow, lack the problem of performance evaluation and optimizational function.
Therefore, some network equipment user self-developing testing apparatus of network equipment forwarding performance, universal network server is as the hardware platform of performance testing device, utilizes the port that is arranged on the network interface card on this universal network server as test port.The Chinese patent application that for example application number is 201110140077.5 discloses a kind of system and method for network apparatus test forwarding performance.
In this patent application, disclosed network performance analysis equipment group and data transmitting/receiving equipment group, this network performance analysis equipment group possesses two low-speed ports.Wherein, network performance analysis equipment group produces low rate data streams, and send data transmitting/receiving equipment group to, data transmitting/receiving equipment group is amplified this low rate data streams to be treated to high-speed data-flow and to send the tested network equipment to again, high-speed data-flow is back to data transmitting/receiving equipment group via the tested network equipment, data transmitting/receiving equipment group is dwindled this high-speed data-flow after being treated to low rate data streams and is back to network performance analysis equipment group, by network performance analysis equipment group, the transmission performance of the tested network equipment is analyzed.
But, although this test macro and method can reduce costs, how accurately do not provide and control and send the speed of message and the solution that how to receive rapidly and to send message.
Therefore, need a kind of new test macro and method send the speed of message and receive rapidly and send message accurately to control.
Summary of the invention
In view of the above problems, the object of this invention is to provide a kind of method and system of network apparatus test forwarding performance, to realize when reducing testing cost, accurately control and send the speed of test data and receive rapidly and send test data.
According to an aspect of the present invention, provide a kind of method of network apparatus test forwarding performance, comprising:
The test data of generation is sent to equipment under test by default speed, and then receive the test data being forwarded back to from equipment under test; Wherein, by using the cpu clock periodicity in TSC register to control the speed that sends test data, and the TSC register value while recording each test data of sending and receiving; Meanwhile, utilize the transmission buffering area of network interface card that test data is sent to equipment under test, then utilize the reception buffer zone of network interface card to receive the test data that equipment under test is forwarded back to;
According to recorded TSC register value, statistics, from sending test data, to the required time of whole test process that receives the test data being forwarded back to from equipment under test, is obtained the forwarding performance parameter of equipment under test.
Wherein, before the test data of generation is sent to equipment under test by default speed, also comprise:
Configuration testing type and test parameter;
According to configured test-types and test parameter, initialization sends buffering area and reception buffer zone and TSC register.
Wherein, by configuration Preset Time interval, statistics, in configured Preset Time interval, from sending test data, to the required time of whole test process that receives the test data being forwarded back to from equipment under test, is obtained the forwarding performance parameter of equipment under test.
On the other hand, the invention provides a kind of system of network apparatus test forwarding performance, comprising:
Data transmit-receive unit, for the test data of generation is sent to equipment under test by default speed, and then receives the test data being forwarded back to from equipment under test; Wherein, by using the cpu clock periodicity in TSC register to control the speed that sends test data, and the TSC register value while recording each test data of sending and receiving; Meanwhile, utilize the transmission buffering area of network interface card that test data is sent to equipment under test, then utilize the reception buffer zone of network interface card to receive the test data that equipment under test is forwarded back to;
Performance statistics unit, for according to recorded TSC register value, adds up from sending test data, to the required time of whole test process that receives the test data being forwarded back to from equipment under test, obtains the forwarding performance parameter of equipment under test.
Utilize above-mentioned according to the method and system of network apparatus test forwarding performance of the present invention, can realize when reducing testing cost, accurately control and send the speed of test data and receive rapidly and send test data, and by the flexible configuration of statistics time interval, can also on less time granularity, analyze and optimized network equipment performance provides more information for developer.
In order to realize above-mentioned and relevant object, one or more aspects of the present invention comprise below by the feature that describes in detail and particularly point out in the claims.Explanation below and accompanying drawing describe some illustrative aspects of the present invention in detail.Yet, the indication of these aspects be only some modes that can use in the variety of way of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and along with understanding more comprehensively of the present invention, other object of the present invention and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 is according to the method flow schematic diagram of the network apparatus test forwarding performance of the embodiment of the present invention;
Fig. 2 is the detailed execution schematic flow sheet according to the method for the network apparatus test forwarding performance of the embodiment of the present invention;
Fig. 3 controls the schematic flow sheet of test data transmission rate according to the use TSC register of the embodiment of the present invention;
Fig. 4 is according to the system logic structure block diagram of the network apparatus test forwarding performance of the embodiment of the present invention.
In institute's drawings attached, identical label is indicated similar or corresponding feature or function.
Embodiment
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
There is the speed that can not accurately control transmission message in the test for aforementioned existing network equipment forwarding performance, and the problem that can not receive rapidly and send message, the present invention is by using TSC(Time signal counter, clock signal counting) the cpu clock periodicity in register is controlled the speed of test data and the time that each test data of statistics consumes through equipment under test of sending, and utilize the transmission buffering area of network interface card and reception buffer zone to carry out sending and receiving test data, can realize when reducing testing cost, accurately control the speed that sends test data, and receive rapidly and send test data.
It should be noted that, in the present invention, can select universal network server based on X86 as testing hardware, as for operating system, can adopt Linux, UNIX or FreeBSD to test the forwarding performance of equipment under test.
For the method for network apparatus test forwarding performance provided by the invention is described, Fig. 1 shows according to the method flow of the network apparatus test forwarding performance of the embodiment of the present invention.
As shown in Figure 1, the method for network apparatus test forwarding performance provided by the invention comprises:
S110: the test data of generation is sent to equipment under test by default speed, and then receive the test data being forwarded back to from equipment under test; Wherein, by using the cpu clock periodicity in TSC register to control the speed that sends test data, and the TSC register value while recording each test data of sending and receiving; Meanwhile, utilize the transmission buffering area of network interface card that test data is sent to equipment under test, then utilize the reception buffer zone of network interface card to receive the test data that equipment under test is forwarded back to.
Wherein, before the test data of generation is sent to equipment under test by default speed, also comprise: configuration testing type and test parameter; According to configured test-types and test parameter, initialization sends buffering area and reception buffer zone and TSC register.
In initialization, send in the process of buffering area and reception buffer zone, to sending buffering area and reception buffer zone, carry out DMA mapping, and to sending the content of buffering area and reception buffer zone, carry out initialization according to the test-types of configuration.
S120: according to recorded TSC register value, statistics, from sending test data, to the required time of whole test process that receives the test data being forwarded back to from equipment under test, is obtained the forwarding performance parameter of equipment under test.
Wherein, by interval setup time, statistics, within the configured time interval, from sending test data, to the required time of whole test process that receives the test data being forwarded back to from equipment under test, is obtained the forwarding performance parameter of equipment under test.
For the method for network apparatus test forwarding performance provided by the invention is more clearly embodied, Fig. 2 shows the detailed execution flow process according to the method for the network apparatus test forwarding performance of the embodiment of the present invention.
As shown in Figure 2, the execution flow process of the method for network apparatus test forwarding performance provided by the invention is as follows:
S210: configuration testing type and test parameter.
Particularly, this step is that the interface of configuration testing type and test parameter is provided for user, after test completes, test result can be returned to user.Wherein, test-types can be that throughput, time delay, TCP concurrent connection number, TCP connect and set up speed, HTTP transaction rate or HTTP transmission rate etc.Test parameter comprises common parameter and the parameter relevant to each test-types.
Wherein, common parameter comprises client NIC, service end network interface card, tests two layers and forward or three layers of forwarding, test I Pv4 or IPv6, client ip address scope, destination port range, service end IP address range, destination interface etc.; If test is three layers of forwarding in addition, also need to configure client gateways address and service end gateway address.
The test parameter of throughput and time delay comprises data message length, testing time, unidirectional or two-way and session number; The test parameter of time delay also comprises background traffic size in addition; TCP concurrent connection number, speed is set up in TCP connection, HTTP transaction rate, the test parameter of HTTP transmission rate comprises whether retransmitting, the re-transmission time, maximum retransmission, initial window size, the test parameter of TCP concurrent connection number also comprises number and the sum that connects of connecting per second, the test parameter of HTTP transmission rate also comprises HTTP version number, every HTTP connects the webpage number of GET, webpage size.
S220: according to configured test-types and test parameter, initialization sends buffering area and reception buffer zone and TSC register.
S230: after completing initialization, start test, the test data of generation is sent to equipment under test.
Wherein, use the cpu clock periodicity in TSC register to control the transmission rate of test data, and record the TSC register value while sending each test data.
S240: after equipment under test receives above-mentioned test data and forwards, receive the test data being forwarded back to from equipment under test.
Wherein, use reception buffer zone to receive and forward the test data of returning, and record the TSC register value while receiving each transmitted test data;
S250: the TSC register value according to each test data of above-mentioned record when the sending and receiving, counts in the Preset Time interval of configuration the forwarding performance parameter of equipment under test.
Particularly, the TSC register value that the TSC register value recording during by reception test data records when deducting and sending test data, just can access the cpu clock cycle that this test data consumes by equipment under test, namely the forwarding performance parameter of equipment under test.
For example, need to analyze the TCP connection of the network equipment and set up speed, so that the TCP connection of the network equipment is set up to speed, be optimized.Now need to count respectively SYN message, SYN-ACK message and ACK message by average the consumed cpu clock cycle of the tested network equipment, think that developer provides more Useful Informations.Conventionally SYN message is the first packet of processing a session, can consume the more time, and the time that SYN-ACK message and ACK message consume is much smaller, and difference of them is little.If it is obviously more than the time of SYN-ACK message consumption that test shows ACK message, show that the network equipment may have problems to the processing section of ACK message, developer just can process for this problem, reaches and optimizes the object that speed is set up in TCP connection.
In addition, the test data of generation is being sent to equipment under test by default speed, and then while receiving the test data be forwarded back to from equipment under test, need to solve two problems:
First be accuracy of timekeeping problem.For example,, in 1000M network environment, for the data of 64 bytes, if transmission rate will reach linear speed, tester is per second need to send 1488096 data, and within every 1/1488096 second, needs send data, and common timing mode does not reach such precision at all.
For this reason, the present invention adopts the cpu clock cycle timing in TSC register, and like this, when sending test data to tested equipment, when the CPU frequency of testing hardware is 1GHz, the accuracy of timekeeping that can reach is in theory 1/1000000000.
Next is the speed transmitting and receive data.Suppose to use the common network interface card driving of INTEL80x86 to transmit and receive data, owing to need to being packet application and the buffer release district of each transmission or reception, the efficiency that greatly impact is received and dispatched, cause performance to be nowhere near, particularly, for the parcel of 64 bytes, 10,000,000,000 networks can only reach gigabit reluctantly.
For this reason, the mode that the present invention adopts recycling network interface card to send buffering area and reception buffer zone is carried out sending and receiving test data.Only initialized time, to sending buffering area and reception buffer zone, carry out DMA mapping, and to sending buffering area and reception buffer zone, carry out initialization according to test-types, record sends the field that test data remains unchanged in test process, after each complete test data of sending/receiving, do not discharge original buffering area, but directly revise the value of this buffer state position, make this buffering area again can sending/receiving test data.
For example, can be set as 0 or 1 by sending buffer state position and reception buffer zone mode bit.Wherein 0 represents to use this transmission buffering area/reception buffer zone to carry out the sending/receiving of test data; 1 expression bans use of this transmission buffering area/reception buffer zone to carry out the sending/receiving of test data.
Particularly, at initial phase, send buffer state position and reception buffer zone mode bit and be all set to 0, mean and can carry out sending/receiving test data with these two buffering areas.When sending test data, the value that sends buffer state position is set to 1, and after sending test data, the value of revising transmission buffer state position is 0, makes this transmission buffering area can send data again.Similarly, while receiving test data in reception buffer zone, the value of reception buffer zone mode bit is made as to 1, after receiving test data, the value of revising reception buffer zone mode bit is 0, makes this reception buffer zone can receive data again.
Meanwhile, for counting test result accurately, need to improve every class testing data by the time consuming statistical accuracy of equipment under test.For this reason, the present invention uses cpu clock cycle in TSC register as the foundation of statistics timing.Common special-purpose performance testing apparatus can not configure the time interval (normally 1 second) of performance data statistics, and in the present invention, owing to having adopted the clock periodicity of CPU in TSC register as time basis, the statistical interval time can be configured to be less than 1 second, be conducive to developer on less time granularity, network equipment forwarding performance is carried out to statistics and analysis more flexibly.
In order more clearly to understand the method for network apparatus test forwarding performance provided by the invention, Fig. 3 shows the flow process of controlling test data transmission rate according to the use TSC register of the embodiment of the present invention.
As shown in Figure 3, specifically comprise the steps:
S310: according to the needs of test, the quantity M that sets this speed that sends test data and need the test packet of transmission;
S320: the cpu clock periodicity N that calculates twice interval between transmission packet according to transmission rate;
S330: the number that test packet has been sent out in initialization is 0, the time that initialization sent test packet last time is 0;
S340: get the value of TSC register, calculate and the clock periodicity i that sent data time interval last time;
S350, if i<N shows to be also less than the time that sends next test packet, continues execution step S340; If i>=N, performs step S360, be ready for sending next test packet;
S360: before sending packet, set and sent the value that data time is current TS C register last time;
S370: send next test packet;
S380: the number of sending out test packet is added to one;
S390: whether the number that test packet has been sent out in judgement is less than M, is to perform step S340, continues to carry out circulation, sends test data; Otherwise the process of transmitting of this test data completes, finish this transmission.
By above-mentioned known, the method of network apparatus test forwarding performance provided by the invention, by using the cpu clock cycle of TSC register, can accurately control the speed that sends test data, and by reusing, send buffering area and reception buffer zone, can reach the object of quick sending and receiving test data.
In order to embody effect of the present invention, followingly describe by way of example.
Example one
Use the XM2 performance testing apparatus of two generation DELL R210 servers and IXIA company respectively certain firewall product to be carried out to 64 byte UDP testing throughputs and be connected the test of setting up speed with TCP, 64 byte UDP testing throughputs, both test results only differ 5/10000ths, TCP connects the test set up speed, both results differed 3/1000ths.
Example two
On DELL R71 server, the Intel-82571 twoport PCI-Express of a PCI-E of configuration, when speed is set up in test tcp connection, the test upper limit surpasses 500,000, test HTTP transaction rate, the test upper limit surpasses 70,000 (now having reached the limit of PCI-Express).
Example three
On two generation DELL R210 servers, Intel-82599 twoport ten thousand Broadcoms of a PCI-E X8 of configuration, the mode that sends buffering area and reception buffer zone with recycling network interface card is received and dispatched message, message for 64 bytes, use a CPU just two 10,000,000,000 ports all can be dealt into linear speed, be per secondly can send about 2,976 ten thousand messages, now CPU also has the more free time, under identical condition, use a CPU, utilize the pktgen of Linux to send message, per secondly can only send about 3,940,000 messages, now CPU takies 100%.
By above-mentioned example, can find out, the method of network apparatus test forwarding performance of the present invention, can test out accurately the performance number of the network equipment, and in the R&D process of the network equipment, can be with less time granularity, for the personnel of opening are analyzing and are providing during optimized network equipment performance more information.
Corresponding with said method, the present invention also provides a kind of system of network apparatus test forwarding performance.Fig. 4 shows according to the system logic structure of the network apparatus test forwarding performance of the embodiment of the present invention.
As shown in Figure 4, the system 400 of network apparatus test forwarding performance provided by the invention comprises data transmit-receive unit 410 and performance statistics unit 420.
Wherein, data transmit-receive unit 410 is for the test data of generation is sent to equipment under test by default speed, and then receives the test data being forwarded back to from equipment under test; Wherein, by using the cpu clock periodicity in TSC register to control the speed that sends test data, and the TSC register value while recording each test data of sending and receiving; Meanwhile, utilize the transmission buffering area of network interface card that test data is sent to equipment under test, then utilize the reception buffer zone of network interface card to receive the test data that equipment under test is forwarded back to.
Performance statistics unit 420, for according to recorded TSC register value, is added up from sending test data, to the required time of whole test process that receives the test data being forwarded back to from equipment under test, obtains the forwarding performance parameter of equipment under test.
Wherein, data transmit-receive unit 410, before the test data of generation is sent to equipment under test by default speed, also comprises dispensing unit and initialization unit (all not shown in figure).
Wherein, dispensing unit is for configuration testing type and test parameter; Initialization unit is used for according to configured test-types and test parameter, and initialization sends buffering area and reception buffer zone and TSC register.Initialization unit sends in the process of buffering area and reception buffer zone in initialization, to sending buffering area and reception buffer zone, carries out DMA mapping, and to sending the content of buffering area and reception buffer zone, carries out initialization according to the test-types of configuration.
In addition, performance statistics unit 420 is by configuration Preset Time interval, and statistics is in configured Preset Time interval, from sending test data, to the required time of whole test process that receives the test data being forwarded back to from equipment under test, obtain the forwarding performance parameter of equipment under test.
Above with reference to accompanying drawing, in the mode of example, described according to the method and system of network apparatus test forwarding performance of the present invention.But, it will be appreciated by those skilled in the art that the method and system of the network apparatus test forwarding performance proposing for the invention described above, can also on the basis that does not depart from content of the present invention, make various improvement.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (8)
1. a method for network apparatus test forwarding performance, comprising:
The test data of generation is sent to equipment under test by default speed, and then receive the described test data being forwarded back to from described equipment under test; Wherein,
By using the cpu clock periodicity in TSC register to control the speed that sends described test data, and the TSC register value while recording each test data of sending and receiving; Meanwhile,
Utilize the transmission buffering area of network interface card that described test data is sent to described equipment under test, then utilize the reception buffer zone of network interface card to receive the described test data that described equipment under test is forwarded back to;
According to recorded TSC register value, statistics, from sending described test data, to the required time of whole test process that receives the described test data being forwarded back to from described equipment under test, is obtained the forwarding performance parameter of described equipment under test.
2. the method for network apparatus test forwarding performance as claimed in claim 1, wherein, before the test data of generation is sent to equipment under test by default speed, also comprises:
Configuration testing type and test parameter;
According to configured test-types and test parameter, send buffering area and reception buffer zone and described TSC register described in initialization.
3. the method for network apparatus test forwarding performance as claimed in claim 2, wherein, in sending the process of buffering area and reception buffer zone described in initialization,
DMA mapping is carried out in described transmission buffering area and reception buffer zone, and according to the test-types of configuration, the content of described transmission buffering area and reception buffer zone is carried out to initialization.
4. the method for network apparatus test forwarding performance as claimed in claim 1, wherein, by configuration Preset Time interval, statistics is in configured Preset Time interval, from sending described test data, to the required time of whole test process that receives the described test data being forwarded back to from described equipment under test, obtain the forwarding performance parameter of described equipment under test.
5. a system for network apparatus test forwarding performance, comprising:
Data transmit-receive unit, for the test data of generation is sent to equipment under test by default speed, and then receives the described test data being forwarded back to from described equipment under test; Wherein,
By using the cpu clock periodicity in TSC register to control the speed that sends described test data, and the TSC register value while recording each test data of sending and receiving; Meanwhile,
Utilize the transmission buffering area of network interface card that described test data is sent to described equipment under test, then utilize the reception buffer zone of network interface card to receive the described test data that described equipment under test is forwarded back to;
Performance statistics unit, be used for according to recorded TSC register value, statistics, from sending described test data, to the required time of whole test process that receives the described test data being forwarded back to from described equipment under test, is obtained the forwarding performance parameter of described equipment under test.
6. the system of network apparatus test forwarding performance as claimed in claim 5, wherein, described data transmit-receive unit, before the test data of generation is sent to equipment under test by default speed, also comprises:
Dispensing unit, for configuration testing type and test parameter;
Initialization unit, for according to configured test-types and test parameter, sends buffering area and reception buffer zone and described TSC register described in initialization.
7. the system of network apparatus test forwarding performance as claimed in claim 6, wherein, described initialization unit in sending the process of buffering area and reception buffer zone described in initialization,
DMA mapping is carried out in described transmission buffering area and reception buffer zone, and according to the described test-types of configuration, the content of described transmission buffering area and reception buffer zone is carried out to initialization.
8. the system of network apparatus test forwarding performance as claimed in claim 5, wherein, described performance statistics unit is by configuration Preset Time interval, statistics is in configured Preset Time interval, from sending described test data, to the required time of whole test process that receives the described test data being forwarded back to from described equipment under test, obtain the forwarding performance parameter of described equipment under test.
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