JP4870192B2 - Log management system, mobile device, and log management method - Google Patents

Description

  The present invention relates to a log management system, a mobile device, and a log management method for managing a plurality of logs time-stamped by mutually independent timers.

  Mobile devices such as mobile phones include communication CPUs (Communication CPUs: CCPUs) that execute communication functions and application CPUs that execute various application programs (for example, in order to increase communication speed and expand service functions). In many cases, two types of processors called Application CPU (ACPU) are mounted (for example, see Patent Document 1 below). Among these, the CCPU relates to processing related to a control plane (C-plane) for executing establishment, maintenance, and disconnection of calls and packet connections, and user plane (U-plane) for executing data (packet) communication between users. Execute the process.

  In order to realize high-speed data communication, the CCPU is required to have a high processing capability, but on the other hand, the CCPU also needs to perform log output, which places a heavy load on the CCPU. As a result, it is difficult to achieve both high communication speed and log output. Therefore, a method has been developed to reduce the load on the CCPU by causing the ACPU to execute log output related to the user plane.

JP 2005-142981 A

  However, since the timer in the CCPU and the timer in the ACPU do not always indicate the same time, if the log output function is distributed to two processors as described above, the log between the user plane and the control plane It is possible that time consistency cannot be achieved. As a result, log analysis and the like may be hindered.

  The present invention has been made to solve the above-described problem, and is a log management system, a mobile device, and a log that can take time consistency between a plurality of logs time-stamped by independent timers. The purpose is to provide a management method.

The log management system according to the present invention generates a first log including a first processor, a second processor independent of the first processor, and a first time stamp measured by a first timer. First generation means, first storage means for storing the first log generated by the first generation means, and a second time stamp timed by a second timer independent of the first timer Second generation means for generating the second log, second storage means for storing the second log generated by the second generation means, and log generation at the same timing in the first generation means and the second generation means Output the dummy data to be output to the first generation unit and the second generation unit, the first log generated according to the dummy data output by the output unit from the first storage unit, The dami A second log generated according to the data is read from the second storage means, and a difference between the first time stamp included in the first log and the second time stamp included in the second log is calculated. The difference between the calculating means for calculating and the first time stamp of the first log stored in the first storage means or the second time stamp of the second log stored in the second storage means Correction means for correcting either one of the first time stamp and the second time stamp in accordance with the other by adding or subtracting the first time stamp and the first time generating means. The second timer and the second generation means operate under the second processor .

The log management method of the present invention also includes a first log including a first processor, a second processor independent of the first processor, and a first time stamp measured by a first timer. The first generation means for generating the first time, the first storage means for storing the first log generated by the first generation means, and the second time measured by the second timer independent of the first timer A log management method executed by a log management system comprising: a second generation unit that generates a second log including a stamp; and a second storage unit that stores a second log generated by the second generation unit. An output step for outputting dummy data for causing the first generation unit and the second generation unit to generate a log at the same timing to the first generation unit and the second generation unit, and a dummy output in the output step The first log generated according to the data is read from the first storage means, and the second log generated according to the dummy data is read from the second storage means, and the first log included in the first log is included. A calculating step for calculating a difference between the first time stamp and the second time stamp included in the second log, and the first time stamp of the first log stored in the first storage means, or 2 By adding or subtracting the difference from the second time stamp of the second log stored in the storage means, one of the first time stamp and the second time stamp is changed to the other. combined look including the correction step, the correcting, the first timer and the first generating unit is operated under a first processor, a second timer and a second generating means operates under the second processor to, characterized in that To.

  According to such a log management system and log management method, dummy data is output toward the first generation means and the second generation means that use timers independent of each other, and the first data is output at the same timing according to the dummy data. A log and a second log are recorded. Subsequently, the difference between the time stamps of the two logs recorded at the same time is calculated, and using the difference, the time stamp of one of the logs is corrected in accordance with the time stamp of the other log. Thereby, the time consistency between these logs can be taken.

Moving machine of the present invention includes the log management system, the first processor performs the communication function, the first processor performs the process relating to the processing and user plane related to the control plane, the first log control The log relating to one of the plane and the user plane is included, and the second log includes the log relating to the other plane.

  In such a mobile device, both the processing related to the control plane and the processing related to the user plane are executed in the first processor, but the log output related to one plane is executed in the second processor. In other words, the log output function is distributed to the two processors in order to reduce the processing load on the first processor. Even in such a case, dummy data is output to the first generation unit and the second generation unit that use timers independent from each other, and the first log and the second log are recorded at the same timing according to the dummy data. Is done. Then, the difference between the time stamps of the two logs recorded at the same time is calculated, and using the difference, the time stamp of one of the logs is corrected in accordance with the time stamp of the other log. As a result, it is possible to achieve temporal consistency between the two logs while reducing the processing load on the first processor.

  According to such a log management system, mobile device, and log management method, logs are generated at the same timing in two log generation means having timers independent from each other, and using the difference between the time stamps of the two logs, Since the time stamp of one of the logs is corrected, temporal consistency between logs can be achieved.

It is a figure which shows the function structure of the moving apparatus which concerns on embodiment. It is a figure which shows the hardware constitutions of the moving apparatus shown in FIG. It is a figure which shows the C-plane log and U-plane log before time stamp correction | amendment. It is a figure which shows the C-plane log and U-plane log after time stamp correction | amendment. It is a flowchart which shows operation | movement of the moving apparatus shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this embodiment, the log management system according to the present invention is applied to a mobile device. In the description of the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

  First, the function and configuration of the mobile device 1 according to the embodiment will be described with reference to FIGS. Examples of the mobile device 1 include a mobile phone and a personal digital assistant (PDA), but may include other types of mobile communication terminals.

  The mobile device 1 is connected to another information processing device (for example, a server or another mobile device) via a mobile communication network (not shown; the same applies hereinafter), and executes a call function and a data transmission / reception function. It is a communication terminal. As shown in FIG. 1, the mobile device 1 includes two types of processors: a communication CPU (CCPU) 2 that executes a communication function, and an application CPU (ACPU) 3 that executes various application programs. Although the CCPU (first processor) 2 and the ACPU (second processor) 3 are independent of each other, various functions of the mobile device 1 are realized by cooperating with each other while transmitting and receiving signals.

  As shown in FIG. 2, the mobile device 1 includes a CPU 101 that executes an operating system, an application program, and the like, a main storage unit 102 that includes a ROM and a RAM, an auxiliary storage unit 103 that includes a memory, and data. The communication control unit 104 performs communication, a display unit 105 including a liquid crystal monitor, and an operation unit 106 including input keys. The CPU 101 includes the CCPU 2 and ACPU 3 described above. Each function of the mobile device 1 shown below reads predetermined software on the CPU 101 and the main storage unit 102, operates the communication control unit 104 under the control of the CPU 101, and operates the main storage unit 102 and the auxiliary storage unit. This is realized by reading / writing data from / to 103.

  Returning to FIG. 1, the mobile device 1 includes a communication unit 11, a control plane (C-plane) processing unit 12, a C-plane log generation unit (first generation unit) 13, and a C-plane log storage unit as functional components. (First storage unit) 15, packet control unit 16, user plane (U-plane) processing unit 17, U-plane log generation unit (second generation unit) 18, U-plane log storage unit (second storage unit) 20, a dummy data output unit (output unit) 21, a calculation unit (calculation unit) 22, and a correction unit (correction unit) 23.

  The communication part 11 is a part which transmits / receives data between mobile communication networks under control of CCPU2.

  The C-plane processing unit 12 is a part that executes processing related to the control plane (C-plane) under the control of the CCPU 2. Specifically, the C-plane processing unit 12 controls the communication unit 11 to execute establishment, maintenance, and disconnection of calls and packet connections. The control plane is a concept that handles signaling necessary for setting, monitoring and releasing a call or connection.

  The C-plane log generation unit 13 is a part that generates a log related to processing executed by the C-plane processing unit 12 under the control of the CCPU 2. When a predetermined process related to the control plane is executed by the C-plane processing unit 12, the C-plane log generation unit 13 calculates the time counted by the CCPU timer (first timer) 14 operating on the CCPU 2. Acquired as a time stamp (first time stamp). Subsequently, the C-plane log generation unit 13 generates a C-plane log (first log) including the time stamp and a predetermined text (message) related to the executed process, and the C-plane log storage unit 15 Output to.

  Further, the C-plane log generation unit 13 generates a log (first log) related to the data in response to input of dummy data to be described later, and outputs the log to the C-plane log storage unit 15.

  The C-plane log storage unit 15 is a part that stores the C-plane log input from the C-plane log generation unit 13. Specifically, the C-plane log storage unit 15 writes the input log to a predetermined log file. As a result, processing records relating to the control plane are accumulated in the mobile device 1.

  The packet control unit 16 is a part that generates and transmits or receives an IP (Internet Protocol) packet under the control of the ACPU 3. The packet control unit 16 outputs the generated IP packet to the U-plane processing unit 17 and processes the IP packet input from the U-plane processing unit 17 based on the protocol.

  The U-plane processing unit 17 is a part that executes processing related to a user plane (U-plane) under the control of the CCPU 2. Specifically, after the call or packet connection is established, the U-plane processing unit 17 controls the communication unit 11 to execute transmission / reception of IP packets with the mobile communication network. The user plane represents a protocol for transmitting / receiving user information via a communication network.

  The U-plane log generation unit 18 is a part that generates a log related to processing executed by the U-plane processing unit 17 under the control of the ACPU 3. When a predetermined process related to the user plane is executed by the U-plane processing unit 17, the U-plane log generation unit 18 displays the time counted by the ACPU timer (second timer) 19 operating on the ACPU 3. Obtained as a time stamp (second time stamp). Here, the ACPU timer 19 is a time measuring means independent of the CCPU timer 14, and therefore the time indicated by the ACPU timer 19 does not necessarily coincide with the time indicated by the CCPU timer 14. Subsequently, the U-plane log generation unit 18 generates a U-plane log (second log) including the acquired time stamp and a predetermined text (message) regarding the executed process, and the U-plane log storage unit 20 is output.

  The U-plane log generation unit 18 generates a log (second log) related to the data in response to input of dummy data to be described later, and outputs the log to the U-plane log storage unit 20.

  The U-plane log storage unit 20 is a part that stores the U-plane log input from the U-plane log generation unit 18. Specifically, the U-plane log storage unit 20 writes the input log to a predetermined log file. As a result, processing records relating to the user plane are accumulated in the mobile device 1.

  The dummy data output unit 21 generates dummy data for causing the C-plane log generation unit 13 and the U-plane log generation unit 18 to generate a log at the same timing, and the C-plane log generation unit 13 and the U-plane log generation unit. 18 is a portion to be output.

  Dummy data to the C-plane log generation unit 13 flows via the packet control unit 16, the U-plane processing unit 17, and the C-plane processing unit 12, as indicated by the path Ra in FIG. At this time, it is necessary for the U-plane processing unit 17 to distinguish between the dummy data and the IP packet to be transmitted via the communication unit 11, but the distinction method may be arbitrarily determined. For example, for the dummy data, a combination of a source address / port number and a destination address / port number is determined in advance, and the packet filter provided in the U-plane processing unit 17 is C for data that matches the combination. -You may make it flow to the plane processing part 12.

  On the other hand, the dummy data to the U-plane log generation unit 18 flows via the packet control unit 16 as indicated by a route Rb in FIG.

  The distance between the routes Ra and Rb is not always the same. However, if the difference in the time that the dummy packet flows through each path is within an allowable range, that is, within an error range in which the log generation units 13 and 18 are considered to generate logs simultaneously, the dummy data output unit 21 Dummy data may be output simultaneously toward the C-plane log generation unit 13 and the U-plane log generation unit 18.

  Although the dummy data output unit 21 outputs dummy data at a predetermined timing or time interval, it may be arbitrarily determined when to output the dummy data. Depending on the time difference between the CCPU timer 14 and the ACPU timer 19, for example, it may be output at intervals of several minutes or at intervals of more than that.

  The calculation unit 22 is a part that calculates the difference between the time stamp of the C-plane log and the time stamp of the U-plane log.

  First, the calculation unit 22 extracts logs generated according to the same dummy packet from each of the C-plane log storage unit 15 and the U-plane log storage unit 20, and includes the times included in those logs. The stamp difference is calculated. Then, the calculation unit 22 outputs the difference to the correction unit 23. For example, when the C-plane log file Fc and the U-plane log file Fu as shown in FIG. 3 exist, the calculation unit 22 calculates the time stamp A ′ of the U-plane log based on the dummy packet D1 and the packet. A difference Δ from the time stamp A of the C-plane log based on D1 is calculated.

  Such processing by the calculation unit 22 may be performed at an arbitrary timing. For example, the calculation unit 22 may calculate the difference using the log corresponding to the previous dummy packet when the log for the dummy packet is generated. Further, the calculation unit 22 may calculate the difference at an arbitrary time regardless of the output timing of the dummy packet.

  The correction unit 23 is a part that corrects one of the time stamps of the C-plane log and the U-plane log according to the difference input from the calculation unit 22.

  3, first, the correction unit 23 reads the log file Fc from the C-plane log storage unit 15 and also reads the log file Fu from the U-plane log storage unit 20. Subsequently, the correction unit 23 corrects the time stamp by adding or subtracting the difference Δ to each time stamp recorded in one of the log files Fc and Fu. For example, as shown in FIG. 4, the correction unit 23 subtracts the difference Δ from each time stamp of the U-plane log, so that the time stamps C ′, E ′, and G ′ in FIG. Correct E and G respectively. Of course, the correction unit 23 may correct each time stamp of the C-plane log instead of the U-plane log.

  The correction unit 23 stores the log file with the time stamp corrected in either of the storage units 15 and 20. At this time, the correction unit 23 may store the log file by overwriting, or may store the log file after correction separately from the log file before correction.

  Next, the operation of the mobile device 1 shown in FIG. 1 will be described with reference to FIG. 5, and the log management method according to the present embodiment will be described. Here, a description will be made on the assumption that a certain amount or more of C-plane logs and U-plane logs are already stored in the mobile device 1.

  First, the dummy data output unit 21 outputs dummy data to the C-plane log generation unit 13 and the U-plane log generation unit 18 (step S1, output step). Each log generation unit 13, 18 generates a C-plane log or U-plane log according to the dummy data, and each log storage unit 15, 20 stores the log (step S2).

  Thereafter, the calculation unit 22 calculates the time stamp difference of each log corresponding to the dummy data (step S3, calculation step). Then, the correction unit 23 corrects the time stamp of either the C-plane log or the U-plane log using the difference (step S4, correction step), and stores the corrected log file (step S5).

  As described above, according to the present embodiment, the C-plane log generation unit 13 using the CCPU timer 14 and the U-plane log generation unit 18 using the ACPU timer 19 independent of the timer 14 are dummy. Data is output, and a C-plane log and a U-plane log are recorded at the same timing according to the dummy data. Subsequently, the difference between the time stamps of the two logs recorded at the same time is calculated, and the time stamp of one of the logs is corrected according to the time stamp of the other log using the difference. Thereby, the time consistency between these logs can be taken.

  For example, as shown in FIG. 4, since the temporal order relationship between the U-plane log in the log file Fu and the C-plane log in the log file Fc is accurately obtained, the user analyzes both log files. Thus, the operation status of the mobile device 1 can be verified.

  In addition, even when the log output function is distributed between the CCPU 2 and the ACPU 3 as in the mobile device 1, the load on the CCPU 2 and the U-plane log is suppressed while suppressing the processing load on the CCPU 2. Time consistency.

  The present invention has been described in detail based on the embodiments. However, the present invention is not limited to the above embodiment. The present invention can be modified in various ways as described below without departing from the scope of the invention.

  In the above embodiment, the log management system according to the present invention is applied to the mobile device 1, but the present invention can be applied to various information processing terminals such as a personal computer and a stationary server. Here, it does not matter whether the information processing terminal is equipped with a communication function. That is, the present invention can be applied to an information processing apparatus that can generate a plurality of logs generated by using a plurality of independent timers.

  In the above embodiment, the C-plane log generation unit 13 is provided in the CCPU 2 and the U-plane log generation unit 18 is provided in the ACPU 3. However, the positional relationship between such log generation unit and the CPU may be reversed.

  DESCRIPTION OF SYMBOLS 1 ... Mobile device, 2 ... CCPU (1st processor), 3 ... ACPU (2nd processor), 11 ... Communication part, 12 ... C-plane process part, 13 ... C-plane log production | generation part (1st production | generation) Means), 14... CCPU timer (first timer), 15... C-plane log storage section (first storage means), 16... Packet control section, 17... U-plane processing section, 18. Part (second generation means), 19 ... ACPU timer (second timer), 20 ... U-plane log storage part (second storage means), 21 ... dummy data output part (output means), 22 ... calculation part ( Calculation unit), 23... Correction unit (correction unit).

Claims (3)

A first processor;
A second processor independent of the first processor;
First generation means for generating a first log including a first time stamp timed by a first timer;
First storage means for storing a first log generated by the first generation means;
Second generation means for generating a second log including a second time stamp measured by a second timer independent of the first timer;
Second storage means for storing a second log generated by the second generation means;
Output means for outputting dummy data for causing the first generation means and the second generation means to generate a log at the same timing, to the first generation means and the second generation means;
The first log generated according to the dummy data output by the output means is read from the first storage means, and the second log generated according to the dummy data is read from the second storage means. Calculating means for calculating a difference between a first time stamp included in the first log and a second time stamp included in the second log;
The difference is added to the first time stamp of the first log stored in the first storage means or the second time stamp of the second log stored in the second storage means, or Correction means for correcting one of the first time stamp and the second time stamp according to the other by subtracting;
Equipped with a,
The first timer and the first generating means operate under the first processor;
The second timer and the second generating means operate under the second processor;
Log management system. A log management system according to claim 1,
The first processor performs a communication function;
The first processor performs processing related to the control plane and processing related to the user plane ,
Includes a log of either of said first log and the control plane and the user plane, the second log contains a log of the other plane,
Mobile machine. A first processor, a second processor independent of the first processor, first generation means for generating a first log including a first time stamp timed by a first timer, and A first storage means for storing a first log generated by the first generation means; and a second log including a second time stamp measured by a second timer independent of the first timer. A log management method executed by a log management system comprising: a second generation means for generating; and a second storage means for storing a second log generated by the second generation means,
Outputting dummy data for causing the first generation unit and the second generation unit to generate a log at the same timing, to the first generation unit and the second generation unit;
The first log generated according to the dummy data output in the output step is read from the first storage means, and the second log generated according to the dummy data is read from the second storage means. And calculating a difference between a first time stamp included in the first log and a second time stamp included in the second log;
The difference is added to the first time stamp of the first log stored in the first storage means or the second time stamp of the second log stored in the second storage means, or A correction step of correcting one of the first time stamp and the second time stamp according to the other by subtracting;
Only including,
The first timer and the first generating means operate under the first processor;
The second timer and the second generating means operate under the second processor;
A log management method.

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