CN118210716A - Interface fault diagnosis and risk prediction method and system for pre-inspection recording software - Google Patents
Interface fault diagnosis and risk prediction method and system for pre-inspection recording software Download PDFInfo
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Abstract
The invention discloses an interface fault diagnosis and risk prediction method of pre-detection recording software, which comprises the following steps: according to the interface interaction flow of the pre-inspection recording software, orderly executing a corresponding first interface pre-function, wherein the first interface pre-function assigns a specified variable as a characteristic value of a corresponding interface; and periodically reading the value of the variable according to the designated frequency, and if the value of the variable is unchanged, enabling an interface corresponding to the value of the variable to fail. The risk prediction comprises the following steps: according to the interface interaction flow of the pre-inspection recording software, orderly executing a corresponding second interface prepositive function, wherein the second interface prepositive function counts the characteristic value variation of a corresponding interface; and periodically reading the characteristic value variation quantity of each interface according to the designated frequency, and if the characteristic value variation quantity smaller than the preset threshold exists, generating a risk prompt of the corresponding interface. The invention realizes observable and predictable interface faults in the running process of the pre-inspection recording software.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a method and a system for diagnosing interface faults and predicting risks of pre-inspection recording software.
Background
In the face of anomalies occurring during the running of the delivery software, C, C ++, java or other application software can have user logs as support for investigation, and some software can record running logs on a hard disk, record the running logs on a database and forward the logs to a third party, so that the anomaly points of the software can be found by analyzing the recorded log information. More schemes also have the step-and-step debugging of source code statements in compiling source code deployment debugging versions.
The pre-inspection recording software has the real-time characteristic of hardware, and meanwhile, the running of the pre-inspection recording software depends on more hardware devices. The pre-inspection recording software is provided with rich external hardware interfaces, such as PCIE, USB, serial ports, network ports and the like, the occurrence of abnormality is related to the related hardware equipment interfaces when the software runs, and the stable running of the hardware is influenced by the complicated factors such as temperature, humidity, dust particle index, air pressure, acid-base degree and the like. Therefore, the running faults of the pre-detection recorded software also have the characteristics of random and sporadic reason distribution, difficult reproduction and difficult debugging after the faults are generated. High-speed DMA data transfer of pre-inspection logging software requires high efficiency and high reliability of source code, whereas traditional schemes such as adding logging and code debugging have great influence on the existing service or debugging is not possible. The concrete steps are as follows: 1, too many log records cause hard disk, database fullness or too many garbage logs, influence the high efficiency of the code and real-time of the program; 2, on-line debugging codes are difficult to reproduce.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems existing in the prior art, the invention provides the interface fault diagnosis and risk prediction method and system for the pre-inspection recording software, which can diagnose faults such as blocking and jamming and the like occurring when the software interacts with the hardware in time, and realize observable and predictable interface faults in the running process of the pre-inspection recording software.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the interface fault diagnosis and risk prediction method of the pre-inspection recording software comprises the following steps of:
s101) according to the interface interaction flow of the pre-inspection recording software, orderly executing a corresponding first interface pre-function, wherein the first interface pre-function assigns a specified variable as a characteristic value of a corresponding interface;
s102) periodically reading the value of the variable according to the designated frequency, and if the value of the variable is unchanged, enabling an interface corresponding to the value of the variable to fail.
Further, when the first interface front-end function assigns the specified variable as the characteristic value of the corresponding interface, the method includes the following steps:
s201) initializing a transmission unit under a corresponding interface;
s202) updating the value of the variable to be the characteristic value of the corresponding interface;
s203) performing a read operation of the transfer unit in a blocking manner.
Further, in step S102, after periodically reading the values of the variables at the specified frequency, the method includes: and resetting the value of the variable after reading is completed, wherein the reset value is different from the characteristic value of any interface.
Further, in step S102, after periodically reading the values of the variables at the specified frequency, the method includes: and mapping the values of the variables into state lamp colors, wherein the state lamps are in one-to-one correspondence with the interfaces.
Further, the risk prediction method comprises the following steps:
S301), according to the interface interaction flow of the pre-inspection recording software, orderly executing a corresponding second interface prepositive function, wherein the second interface prepositive function counts the characteristic value variation of a corresponding interface;
S302) periodically reading the characteristic value variation quantity of each interface according to the designated frequency, and if the characteristic value variation quantity smaller than the preset threshold exists, generating a risk prompt of the corresponding interface.
Further, when the second interface front-end function counts the feature value variation of the corresponding interface, the method includes the following steps:
S401) initializing a transmission unit under a corresponding interface;
s402), counting the characteristic value variation of the corresponding interface;
s403) performing a read operation of the transfer unit in a blocking manner.
Further, the characteristic value change amount includes an increment amount per unit time, or a change number per unit time, or a change rate per unit time.
Further, when the feature value variation is an increment in unit time, step S402 includes: and performing self-increasing operation on the characteristic value variation quantity of the corresponding interface.
The invention also provides an interface fault diagnosis and risk prediction system of the pre-inspection recording software, which comprises a microprocessor and a computer readable storage medium which are connected with each other, wherein the microprocessor is programmed or configured to execute the interface fault diagnosis and risk prediction method of any one of the pre-inspection recording software.
The invention also proposes a computer readable storage medium for interface fault diagnosis and risk prediction method for pre-inspection logging software programmed or configured by a microprocessor to perform any one of the above.
Compared with the prior art, the invention has the advantages that:
The invention configures the interface preposed function, the interface preposed function is orderly triggered and called before interface interaction, each time the interface preposed function is called, the corresponding characteristic value is marked and the characteristic value variation is counted, on the basis of not independently adding additional application logs, system logs or the external transmission of a third party interface, whether the interface is failed can be determined only by the change frequency of the characteristic value, and meanwhile, the interface which is likely to fail can be predicted by the characteristic value variation of each interface.
Drawings
FIG. 1 is a flow chart of a trigger call of an interface pre-function in an embodiment of the present invention.
FIG. 2 is a flow chart of a method according to an embodiment of the invention.
Fig. 3 is a schematic diagram of an interface interaction flow of the record before inspection software in the embodiment of the invention.
Fig. 4 is a schematic diagram of data reading and writing performed by the pre-inspection recording software and different interfaces according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a status light color change when there is no fault in the interface.
Fig. 6 is a schematic diagram of color change such as a state when an interface has a fault.
Fig. 7 is a schematic diagram of risk points determined by statistical variation.
Detailed Description
The invention is further described below in connection with the drawings and the specific preferred embodiments, but the scope of protection of the invention is not limited thereby.
Before describing particular embodiments of the present invention, related concepts will be described.
Pre-inspection recording device
The satellite communication or radar communication field needs to examine the recording device before finishing to the record of signal, and the data storage of record is in the magnetic disk, supplies analysis after the fact to use. The recording device before detection consists of a digital or analog board card and a computer with a disk array, wherein the FPGA of the board card and the computer adopt PCIE bus high-speed communication.
And a computer of the pre-inspection recording device is provided with Windows, linux or kylin and other systems, and is operated with application software, and the computer uses DMA under the PCIE bus to transfer data acquired by the FPGA to a computer memory. The application software performs operations such as disk storage management, data preview, playback control, fault diagnosis and the like on the data transmitted by the DMA, and meanwhile, the application software can also communicate with the outside through hardware expansion interfaces such as Ethernet, USB, serial ports and the like.
Pre-inspection recording software
The pre-inspection recording software finishes DMA high-speed data acquisition and storage, and the software has the characteristics of high running instantaneity, large data processing quantity (4-6 GB/S) and the like, and the simplicity, reliability and high efficiency of codes must be considered in the process of writing and debugging software codes.
The pre-inspection recording software can be developed and completed by C, C ++, java and other high languages after the normal installation of the kernel driver, and can have a man-machine interaction interface running state or a command line non-interface running state. In any running state, the method can report the working state to the 3 rd external party. The pre-detection record software can call or trigger functions and interfaces for calling some blocking modes in the process of communicating with interfaces such as FPGA, ethernet, USB, serial ports and the like. The method is influenced by various external hardware interfaces and uncertain factors of interface sides, and abnormal conditions such as program loss response, overhigh CPU occupancy rate, no output when clicking a button and the like are frequently encountered in the running process of application software.
Example 1
The embodiment provides an interface fault diagnosis and risk prediction method of pre-inspection recording software, which uses a unit type condition triggering method to diagnose, acts on key code segments, occupies extremely micro CPU particle sheets and memory resources to diagnose and predict faults; meanwhile, the fault cause of the software in running can be observed and predicted; in particular, to diagnose blocking and stuck faults that occur when application software interacts with hardware.
The unit type condition triggering method comprises a group of function sets U with execution conditions and a group of output function sets O; the function set U and the function set O complete data exchange through computer software signals or a cache, the functions contained in the function set U have the function of executing marks to modify the shared characteristic value v, the function set O has the function of reading and resetting the function mark quantity v of the set U and the corresponding triggering condition c, the v change times and the mapping output can be counted, and the abnormal high identification of the user can be output in the form of a graphic table. The function set U has the characteristics of high real-time reliability and low resource consumption, and the function set O has the characteristics of low real-time, extensible output and human-computer interaction interface function.
As shown in fig. 1, the set I is a set of interface interaction functions, and is denoted as i= { interface,1, interface,2, interface,3 … interface, I }; the PCIE, USB, serial port, network card and other interface forms belong to the set I. The function set U is a set of interface pre-functions, the function set U is orderly triggered and invoked before the execution of the set I, and sets such as function subsets F ', F "classified according to the triggering conditions belong to the function set U, wherein the function set F' = { func,1, func,2, func,3 … func, (I) }, the function set F" = { func,1, func,2, func,3 … func, (I) }, for distinguishing, in this embodiment, the interface pre-functions in the function set F 'are referred to as first interface pre-functions, and the interface pre-functions in the function set F "are referred to as second interface pre-functions, so as to distinguish the interface pre-functions in the function subsets F', F" and other sets.
As shown in fig. 2, the interface fault diagnosis in this embodiment includes the following steps:
s101) according to the interface interaction flow of the pre-inspection recording software, orderly executing a corresponding first interface pre-function, wherein the first interface pre-function assigns a specified variable as a characteristic value of a corresponding interface;
s102) periodically reading the value of the variable according to the designated frequency, and if the value of the variable is unchanged, enabling an interface corresponding to the value of the variable to fail.
In step S101, the interface interaction flow of the record before inspection software is shown in fig. 3, and the running process of the record before inspection software can be abstracted into flow selection and interface interaction, and the interface interaction functions in the interface interaction set I can be selected according to different flows to realize different interface interaction sequences. As shown in fig. 4, the execution time t of the interface interaction function included in the interface interaction set I is uniform and short, for example, DMA one-time triggering read-write of PCIE, one-time TCP/UDP read-write of the network card, and one-time read-write time of the serial port are all below millisecond level and time distribution is more uniform.
In this embodiment, the F 'function set (F' e U) shares the tag quantity p value operation, and performs func, i while assigning a special tag value belonging to its lower scalar. The DMA read-write function func1 function, for example placed at PCIE, has a global tag quantity p, which is assigned a special value (subscript value) as func1 is executed. Specifically, in step S101, when the first interface front-end function assigns the specified variable as the feature value of the corresponding interface, the method includes the following steps:
s201) initializing a transmission unit under a corresponding interface;
s202) updating the value of the variable to be the characteristic value of the corresponding interface;
s203) performing a read operation of the transfer unit in a blocking manner.
In this embodiment, the output function of the F 'function set includes a timer, the frequency period is F, the variable p is periodically read, the p value is mapped to the graphical interface perceived by the user identification, and after the reading output is completed, the variable p is reset to be different from the set F' function flag value. Therefore, in step S102 of the present embodiment, after periodically reading the values of the variables at the specified frequency, it includes: and mapping the values of the variables into state lamp colors, wherein the state lamps are in one-to-one correspondence with the interfaces, and resetting the values of the variables after reading is completed, wherein the reset values are different from the characteristic values of any interface.
In this embodiment, the execution code at the time of interface failure diagnosis is as follows:
One time Tty interface transmission by// func1
……
Triggering flag current eigenvalue
stage＝1；
Perform one Tty read operation in blocking mode
read(tty_fd,buffer,SIZE_PER_PICES)；
One DMA interface transfer by/(func 2)
Initializing a DMA transfer unit under PCIE
posix_memalign((void**)&allocated,4096,SIZE_PER_PICES)；
Register interrupt of operation FPGA board card
*((uint16_t*)virt_addr)＝writeval；
Triggering flag current eigenvalue
stage＝2；
DMA read operation performed once in blocking mode
read(fd,allocated,SIZE_PER_PICES)；
//func3
stage＝3；
USB read operation performed once in blocking mode
read(usb,buffer,size)；
//func4
stage＝4；
Performing a network card data read operation in blocking mode
read(net,buffer,size)；
Output1 function
The// timer delay is triggered
timer_after()；
Read/request to stage
request(stage)
The request function maps to status light colors according to the current value of the stage variable, specifically, { [1, tty red and other 3 interface lights yellow ], [2, dma red and other 3 interface lights yellow ], [3, usb red and other 3 interface lights yellow ], [4, net red and other 3 interface lights yellow ] }. The mapping result is shown in fig. 5, the yellow light represents the code execution path, the red light represents the instantaneous point of operation of the unit, and the red light is randomly displayed according to the interface interaction flow of the pre-inspection recording software operation under the condition that each interface has no fault in the actual operation.
Under the condition that a fault exists in a certain interface, the pre-detection recording software can generate a service jam fault, and the color of a status lamp of the fault interface is continuously red, for example, the status lamp of the DMA interface is continuously maintained to be red for 4 seconds in the figure 6, and by combining the trigger logic, the code execution jam at the position of the unit stage (2), namely the jam fault of the DMA (FPGA interface) can be judged.
As shown in fig. 2, the interface risk prediction in this embodiment includes the following steps:
S301), according to the interface interaction flow of the pre-inspection recording software, orderly executing a corresponding second interface prepositive function, wherein the second interface prepositive function counts the characteristic value variation of a corresponding interface;
S302) periodically reading the characteristic value variation quantity of each interface according to the designated frequency, and if the characteristic value variation quantity smaller than the preset threshold exists, generating a risk prompt of the corresponding interface.
In this embodiment, the interface risk prediction is to perform variation statistics (F "∈u) on the feature value v operated by the function set F" = { func,1, func,2, func,3 … func, (i) }, where the statistical method includes, but is not limited to, increment in unit time, change number in unit time, and change rate in unit time. Taking the rate of change per unit time as an example, as shown in fig. 7, when the rate of change of a certain interface jumps, it is considered that the interface may have a risk.
In step S301 of the present embodiment, when the second interface front-end function counts the feature value variation of the corresponding interface, the method includes the following steps:
S401) initializing a transmission unit under a corresponding interface;
s402), counting the characteristic value variation of the corresponding interface;
s403) performing a read operation of the transfer unit in a blocking manner.
Taking the increment of the characteristic value variation as the unit time as an example, the execution code for interface risk prediction for the DMA interface is as follows:
One DMA interface transfer by/(func 1)
Initializing a DMA transfer unit under PCIE
posix_memalign((void**)&allocated,4096,SIZE_PER_PICES)；
Register interrupt of operation FPGA board card
*((uint16_t*)virt_addr)＝writeval；
The change amount of the current characteristic value of the trigger mark is increased by × +.
rc++；
DMA read operation performed once in blocking mode
read(fd,allocated,SIZE_PER_PICES)；
The// timer delay is triggered
timer_after()；
Read to rc by/request
request(rc)
if(rc<LIMITS)
{
Warn ("data read speed down, please check FPGA board temperature etc. |");
}
when the interface is in actual operation, under the condition that the read-write speed of each interface is normal, alarm information can not be generated, and under the condition that the speed of a certain interface is reduced, the characteristic value variation is smaller than the expected variation, and by combining the trigger logic, the alarm information can be generated to prompt the fault risk of the interface.
Example two
The present embodiment proposes an interface fault diagnosis and risk prediction system for pre-inspection recording software, which includes a microprocessor and a computer readable storage medium connected to each other, where the microprocessor is programmed or configured to execute the interface fault diagnosis and risk prediction method for pre-inspection recording software according to the first embodiment.
The present embodiment also proposes a computer readable storage medium for programming or configuring by a microprocessor to perform the interface fault diagnosis and risk prediction method of the pre-inspection recording software of the first embodiment.
In summary, the invention provides an interface fault diagnosis and risk prediction method for pre-inspection recording software, which is based on unit condition triggering, establishes triggering logic before interface interaction by setting an interface front function, can timely locate a fault interface or an interface with fault risk, solves the problems of excessive occupation of a disk and low program running efficiency of the traditional scheme recording log on the basis of not independently adding additional application logs, system logs or externally transmitting a third-party interface, and solves the problems that no effective clue is available when the software runs, so that the problem sources can not be located or the range of investigation can not be cleared quickly. Meanwhile, the risk occurrence can be predicted by the method of the invention, and the system can be maintained in advance by intervention.
The risk occurrence possibility is predicted by counting the frequency, the frequency variation and the like of interface call. The method has clear principle, direct fault presentation and high reliability of the diagnosis interface, and is an important credible basis for further troubleshooting the fault
Meanwhile, the invention is simple and convenient to realize, has high portability, can be rapidly realized by using C language, JAVA, C++, and assembly language, and has good engineering foundation.
After the programming operation of the invention, the invention occupies the resources of tiny products and does not influence the normal business operation. The user can migrate the relevant execution code at as many code segments as possible to obtain more detailed diagnostic points.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (10)
1. The interface fault diagnosis and risk prediction method of the pre-inspection recording software is characterized by comprising the following steps of:
s101) according to the interface interaction flow of the pre-inspection recording software, orderly executing a corresponding first interface pre-function, wherein the first interface pre-function assigns a specified variable as a characteristic value of a corresponding interface;
s102) periodically reading the value of the variable according to the designated frequency, and if the value of the variable is unchanged, enabling an interface corresponding to the value of the variable to fail.
2. The method for diagnosing and predicting risk of interface failure of pre-inspection recording software according to claim 1, wherein when the first interface pre-function assigns the specified variable as the characteristic value of the corresponding interface, the method comprises the following steps:
s201) initializing a transmission unit under a corresponding interface;
s202) updating the value of the variable to be the characteristic value of the corresponding interface;
s203) performing a read operation of the transfer unit in a blocking manner.
3. The method for diagnosing interface failure and predicting risk of pre-inspection recording software according to claim 1, wherein in step S102, after periodically reading the values of the variables at a specified frequency, comprising: and resetting the value of the variable after reading is completed, wherein the reset value is different from the characteristic value of any interface.
4. The method for diagnosing interface failure and predicting risk of pre-inspection recording software according to claim 1, wherein in step S102, after periodically reading the values of the variables at a specified frequency, comprising: and mapping the values of the variables into state lamp colors, wherein the state lamps are in one-to-one correspondence with the interfaces.
5. The method for diagnosing and predicting risk of interface failure of pre-inspection recording software according to claim 1, wherein the risk predicting comprises the steps of:
S301), according to the interface interaction flow of the pre-inspection recording software, orderly executing a corresponding second interface prepositive function, wherein the second interface prepositive function counts the characteristic value variation of a corresponding interface;
S302) periodically reading the characteristic value variation quantity of each interface according to the designated frequency, and if the characteristic value variation quantity smaller than the preset threshold exists, generating a risk prompt of the corresponding interface.
6. The method for diagnosing and predicting risk of interface failure of pre-inspection recording software according to claim 5, wherein when the second interface pre-function counts the feature value variation of the corresponding interface, the method comprises the following steps:
S401) initializing a transmission unit under a corresponding interface;
s402), counting the characteristic value variation of the corresponding interface;
s403) performing a read operation of the transfer unit in a blocking manner.
7. The method for diagnosing and predicting risk of an interface failure in pre-inspection software according to claim 6, wherein the characteristic value change amount includes an increment amount per unit time, or a decrement amount per unit time, or a change number per unit time, or a change rate per unit time.
8. The method for diagnosing and predicting risk of an interface failure in pre-inspection recording software according to claim 7, wherein when the characteristic value variation is an increment per unit time, the step S402 includes: and performing self-increasing operation on the characteristic value variation quantity of the corresponding interface.
9. An interface fault diagnosis and risk prediction system for pre-inspection logging software, comprising a microprocessor and a computer readable storage medium interconnected, the microprocessor being programmed or configured to perform the interface fault diagnosis and risk prediction method for pre-inspection logging software of any one of claims 1 to 8.
10. A computer readable storage medium for programming or configuring by a microprocessor to perform the interface fault diagnosis and risk prediction method of the pre-inspection logging software of any one of claims 1 to 8.
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