JPH1097445A - Logging managing method, logging clock and information processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately store a logging order by counting the number of accesses from each CPU to a logging clock and adding a logging time and the number of accesses to logging information to make them logging data. SOLUTION: Processing A is performed by a CPUa and the CPUa receives a logging time from a frequency divider and a count value from a bus buffer. A counter 14 the count value to one. The CPUa ends processing B, receives a logging time from the frequency divider and receives a count value 1 from the bus buffer. The counter 14 counts up the count value to two. When a CPUb ends processing C, a logging time is received and a count value 2 is received. The counter 14 counts up the counter value to three. Similarly, the CPUa performs processing D and receives a count value 3. That is, the processing of the CPUa and b ends in the order of A to E and analysis is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an information processing apparatus for executing various programs by a plurality of CPUs.
The present invention relates to a logging management method in which a logging time common to the system is added to the logging of each CPU for recording.
The present invention relates to a logging management method, a logging clock, and an information processing apparatus capable of accurately logging a time-series processing state of a log.

[0002]

2. Description of the Related Art Generally, in an information processing apparatus, in order to investigate the cause of an abnormal situation when it occurs, a record (log) of constantly executed processes and operations is stored in a file or the like (logging). ). In particular, in a multi-CPU system incorporating a plurality of CPUs, one program is divided into a plurality of tasks, and each task is executed in parallel by the plurality of CPUs. It is important to know who you are.

Therefore, in order to log the operation state of each CPU in time series, the conventional logging management method (first logging management method) reads the time from a clock common to the system when logging occurs for each CPU. , A log (logging information) with the time data (logging time) added
As logging data is stored in a logging area for each CPU or a common logging area.
Here, a clock for generating a logging time common to the systems is a logging clock or a real-time clock (rt).
c).

As a technique for preventing a plurality of CPUs from accessing the logging clock, access requests from the CPUs are monitored, permission is granted in an early order, and logging is performed in the permitted order. It is common to access the clock.

A conventional logging clock will be described with reference to FIG. FIG. 9 is a block diagram of a conventional logging clock and its surroundings. The conventional logging clock 1 '
It comprises a crystal oscillator 11, a frequency divider 12, and a microcomputer interface 13, and is provided with a backup power supply 2, an operation power supply 3, and a switch 4 'as power supplies of a logging clock 1'.

[0006] Each part of the conventional logging clock will be described. The crystal oscillator 11 is an oscillator that generates a reference clock for time counting. For example, a general rtc uses a 32.768 kHz crystal oscillator as a reference clock, has a period of about 30.5 μsec, and has a logging function. It is not possible to make the minimum unit time of about 30.5 μs or less.

[0007] The reason is that rtc must count the time even when the main power supply of the apparatus is turned off. Therefore, it is necessary to continuously supply power from an auxiliary power supply such as a battery. There is a characteristic that the consumption current increases when the height is increased. Also, if the frequency is set low, the crystal oscillator tends to be unstable and the crystal itself must be large. For this reason, in general, the one of about several tens kHz is used.

Incidentally, in a generally used IC of a logging clock, the resolution (logging unit time) is usually 1 second. On the other hand, since the speed of the CPU is on the order of μ seconds (10 ⁻⁶ ), there is a possibility that thousands to tens of thousands of loggings occur within the same time of one second.

The frequency divider 12 divides the output of the crystal oscillator and counts seconds, minutes, hours, days, months, and years. Note that the microcomputer can set the current time for the counter value of each minute period 12.

Microcomputer interface 13
Is an interface between the frequency divider 12 and the microcomputer, and the microcomputer interface 13
By reading the value of the counter of the frequency divider 12 when necessary, the microcomputer (CPU) can know the current time via the CPU.

The backup power supply 2 is a backup power supply for counting time when the main power supply of the apparatus is turned off, and is an auxiliary power supply such as a battery.
If the frequency of the crystal oscillator 11 is increased, the current consumption increases, and if the capacity of the backup power supply 2 is increased, the cost, size, and weight increase.

The operation power supply 3 is such that the main power supply of the apparatus is on.
The power supply of the logging clock 1 'in this case, and may be considered as the main power supply of the apparatus. The switch 4 'is a switch for switching the power supply of the logging clock 1' between the operation power supply 3 and the backup power supply 2 in accordance with on / off of the main power supply of the apparatus.

Then, in the first conventional logging management method, as shown in FIG. 10, every time the processing is completed by a plurality of CPUs, a logging process is performed based on the counter value of the frequency divider 12 of the logging clock 1 '. The time (logging time) is read (clock read), the time data is added to the logging information, and stored as logging data in a logging area for each CPU or a common logging area. FIG. 10 is an explanatory diagram showing the operation of the conventional logging management method.

For example, when an abnormal state occurs and the time reading to the logging clock 1 'due to the occurrence of logging from each CPU is concentrated, a plurality of time readings from each CPU occur within a unit time of the logging clock 1'. As a result, as shown in FIG. 11, the same time may be given as the logging time of the logging data of each process.
FIG. 11 is an explanatory diagram showing a state of a logging area when a plurality of loggings occur within the same time.

When logging data is stored in a different logging area for each CPU, if the logging times are the same, the order of occurrence of logging by each CPU is completely unknown. Further, even when a plurality of CPUs store logging data in a common logging area, the time from when the CPU creates the logging data to when the writing of the logging data to the logging area is started is different. It is difficult to determine whether or not the logging order is the logging generation order as it is, and if the logging times are the same, the logging generation order of each CPU cannot be known at all.

In Japanese Unexamined Patent Publication No. Hei 2-197954 "parallel execution reproduction method" (second logging management method) proposed as another logging management method, a task generation time and an end time are monitored by a timer. Then, it is stored in a log file, and the execution order of each task can be controlled and reproduced.

Further, as another conventional logging management method, there is Japanese Patent Laid-Open No. Hei 4-21644 "Logging management method" (third logging management method). In this method, logging information generated by a plurality of CPUs is assigned a serial number counted in a common count area, and the logging information is stored in an area for each CPU.

[0018]

However, in the first conventional logging management method and logging clock described above,
For example, when a 32.768 kHz crystal oscillator is used, the period is about 30.5 μsec, and there is a problem that the logging time cannot be distinguished for 30.5 μsec or less.

In particular, some microcomputers have a processing speed of one step of 1 μsec or less.
Since the processing of 30 steps or more can be executed in the microsecond cycle, if logging is performed for each processing unit, multiple accesses occur within the unit time of the logging clock. In this case, the same time is logged. However, there is a problem that it is impossible to determine which is the first.

Further, in a general logging clock IC, the logging unit time is often one second, and the above-mentioned problem is more likely to occur.

Further, the second logging management method requires that the accuracy of the timer is considerably high, and there is a problem that it is difficult to operate a general logging clock.

In the third logging management method, management data is stored in a common storage area, and each logging information is provided with a storage area for each CPU.
At the time of analysis, after the data is sequentially read from the management area, the operation of referring to the area of each CPU is performed according to the read data, and there is a problem that the analysis work is difficult.

The present invention has been made in view of the above circumstances, and a logging management method, a logging clock, and information capable of accurately storing the order of logging even if logging occurs a plurality of times at the same time. It is an object to provide a processing device.

[0024]

According to a first aspect of the present invention, there is provided a communication system comprising a plurality of CPUs, the plurality of CPUs being associated with each other.
At the time of logging in which U stores logging information in a common storage unit, logging management is performed by accessing a common logging clock to obtain a logging time, and adding the logging time to the logging information to generate logging data. In the method, the number of accesses to the logging clock from each of the CPUs is counted, and the logging time and the number of accesses are added to information of logging to generate logging data. The order of the generated logging can be represented by the value of the access count.

According to a second aspect of the present invention, there is provided a logging clock in which a date and time is counted, and the counted date and time is used as a logging time in response to accesses from a plurality of CPUs. A logging clock for outputting, wherein a counter for counting the number of accesses from the plurality of CPUs is provided, and the logging time and the value of the counter are output as the number of accesses for accesses from the plurality of CPUs. The access order can be output as the number of times of access even at the same logging time.

According to a third aspect of the present invention, there is provided an information processing apparatus for performing logging management in a multi-CPU system in which various programs are executed by a plurality of CPUs. A logging clock that outputs the counted date and time as a logging time in response to access from a plurality of CPUs, and counts the number of accesses to the logging clock from the plurality of CPUs, and performs access from the plurality of CPUs. Counter means for outputting the number of accesses to the CPU, and control means for adding the logging time and the number of accesses to logging information and storing the data as logging data. The order of logging that occurred within the time can be represented by the value of access count. That.

According to a fourth aspect of the present invention, there is provided an information processing apparatus for performing logging management in a multi-CPU system in which various programs are executed by a plurality of CPUs. Logging clock, and control means for adding the logging time and the number of accesses obtained from the logging clock to logging information and storing the logging data as logging data. Can be represented by the value of the number of accesses.

According to a fifth aspect of the present invention, there is provided an information processing apparatus comprising:
The feature is that each CPU that performs logging in the PU system performs the logging, and the order of logging that occurs within the same logging time in a plurality of CPUs can be represented by the value of the number of accesses.

According to a sixth aspect of the present invention, there is provided a system comprising a plurality of CPUs related to each other, wherein each CPU stores logging information in a common storage unit. At the time of logging, access the common logging clock to obtain the logging time,
In the logging management method in which the logging time is added to the logging information and the logging data is used as logging data, when the plurality of CPUs access the logging clock a plurality of times within the same logging time, the logging clock is transmitted to the logging clock. The number of accesses is counted, and the logging time and the number of accesses are added to the logging information to obtain logging data.For a plurality of loggings occurring within the same logging time, the order of the number of accesses is determined. It can be represented by a value.

According to a seventh aspect of the present invention, there is provided a logging clock in which a date and time is counted in a logging clock, and the counted date and time is used as a logging time in response to accesses from a plurality of CPUs. A logging clock to be output, wherein the plurality of Cs are output within the same logging time.
When a plurality of accesses from the PU to the logging clock occur, a counter for counting the number of accesses from the plurality of CPUs is provided. The feature is to output the value as the access count,
It is possible to output the order of access for a plurality of loggings occurring within the same logging time as the value of the number of accesses.

According to an eighth aspect of the present invention, there is provided an information processing apparatus for performing logging management in a multi-CPU system in which various programs are executed by a plurality of CPUs. A logging clock that outputs the counted date and time as a logging time in response to an access from a plurality of CPUs, and a case where access to the logging clock from the plurality of CPUs occurs multiple times within the same logging time. Counter means for counting the number of accesses to the logging clock from the plurality of CPUs, and outputting the number of accesses in response to access from the plurality of CPUs, and logging information on the logging time and the number of accesses. Control means for storing as logging data in addition to the For multiple occurrences of the logging in the same logging time in a plurality CPU, may represent the order in the value of the access count.

According to a ninth aspect of the present invention, there is provided an information processing apparatus for performing logging management in a multi-CPU system in which various programs are executed by a plurality of CPUs. Logging clock, and control means for adding the logging time and the number of accesses obtained from the logging clock to logging information and storing the logging data as logging data. The order of the multiple occurrences of logging can be represented by the value of the number of accesses.

According to a tenth aspect of the present invention for solving the problems of the conventional example, an information processing apparatus is provided.
The processing by the control means according to claim or 9 is performed by each CPU that has performed logging in the multi-CPU system, and for a plurality of loggings occurring within the same logging time in a plurality of CPUs, the order of the logging is accessed. It can be represented by the value of the number of times.

[0034]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the claimed invention will be described with reference to the drawings. A first logging management method, a logging clock, and an information processing device according to the present invention count a number of accesses to a logging clock from a plurality of CPUs, and add the logging time and the number of accesses to the logging information to a storage unit. Therefore, even if logging is performed a plurality of times at the same logging time, the order of logging can be accurately identified.

First, a configuration for realizing a first logging clock and a logging management method using the same according to the present invention will be described with reference to FIG. FIG. 1 shows a first embodiment according to the present invention.
FIG. 2 is a block diagram showing the configuration of a logging clock and its periphery. Portions having the same configuration as in FIG. 9 are described with the same reference numerals.

The first logging clock 1 of the present invention is provided with a counter 14 and a bus buffer 15 as features of the present invention in addition to a conventional logging clock (RTC IC) 1 '. , A backup power supply 2, an operation power supply 3, and a switch 4 are provided. Note that the inside of the logging clock (RTC IC) 1 'is the same as the conventional one, and a crystal oscillator 11, a frequency divider 12,
It comprises a microcomputer interface 13. A plurality of CPUs 20 and a memory 30 are provided as components around the logging clock 1 of the present invention.

Next, the logging clock of the present invention and its peripheral parts will be described in detail.
The crystal oscillator 11, frequency divider 12, microcomputer interface 13, backup power supply 2 and power supply 3, which constitute the power supply 1 ′, are completely the same as in the prior art, so that the description is omitted here. Only the features of the present invention will be described.

The switch 4 is a switch for switching the power supply between the operation power supply 3 and the backup power supply 2 in accordance with the on / off of the main power supply of the apparatus as in the prior art.
According to the present invention, when the main power supply of the apparatus is on, the operating power supply 3 is supplied to both the RTC IC 1 'and the counter 14 and the whole system, and when the main power supply of the apparatus is off,
The backup power supply 2 is supplied only to the RTC IC 1 '.

The counter 14 is a counter which counts up by a reading signal of the logging time from the CPU (hereinafter simply referred to as a reading signal). The operation of the counter 14 is as follows.
In the example shown in FIG. 2, the initial value is all bits Low, and the count value is “0”. At the rising edge of the first read signal from the CPU, bit0 rises and the count value becomes “1”. At the second rising edge of the read signal, bit0 falls, bit1 rises and the count value becomes "2", and at the third rising edge of the read signal from the CPU, bit0 rises and the count value becomes "3". . FIG. 2 is an explanatory diagram showing a specific example of the operation of the counter 14 of the present invention.

FIG. 2 shows an example of a 3-bit counter, but the number of bits of the counter may be set to 8 bits, 16 bits, or the like in accordance with the bus width of the CPU. The bit width is set so that a count value larger than the maximum number can be indicated depending on how many times each CPU reads out the data at a unit time of the logging time. For example, up to 20 per second
If it is 0 or less, it is 8 bits (256 times) or more.
When the count value reaches the maximum value, it is counted from 0 again.

The bus buffer 15 is a buffer for reading the count value of the counter 14 with a read signal from the CPU and outputting it to the data bus. The operation of the bus buffer 15 will be described with reference to the example shown in FIG. 2. The count value “0” is read at the falling of the first read signal from the CPU, and at the falling of the second read signal from the CPU. The count value “1” is read, and the count value “2” is read at the falling edge of the third read signal from the CPU.

The interlocking operation of the counter 14 and the bus buffer 15 will be described with reference to the example shown in FIG. 2. The count value "0" is read from the counter 14 at the fall of the first read signal from the CPU. At the rising edge of the read signal, the count value of the counter 14 becomes “1”, and CP
The count value “1” is read at the second fall of the read signal from U, the count value of the counter 14 becomes “2” at the rise of the read signal, and the third fall of the read signal from the CPU. And the count value is “2”
Is read out, and at the rising edge of the read signal, the counter 1 is read.
The count value of 4 becomes “3”.

The memory 30 is a storage unit having a logging area for storing logging data of the CPU. A logging area may be provided for each CPU, or a common logging area may be provided.

Here, the logging area will be described using a specific example with reference to FIGS. FIG. 3 is a format example in a logging area when a logging area is provided for each CPU, and FIG. 4 is a format example in a logging area when a common logging area is provided.

When a logging area is provided for each CPU, as shown in FIG. 3, logging data of one process is composed of a logging time, a count value, and logging information of the process. On the other hand, when a common logging area is provided, as shown in FIG. 4, the logging data of one process includes a logging time, a count value, a CPU identifier, and logging information of the process.

The CPU 20 performs the assigned process, and performs a logging process for logging after the process is completed. Here, the logging process includes a clock reading process for reading a logging time and a storage process for storing logging data.

Specifically, the clock reading process outputs a reading signal of the logging time to the logging clock 1,
This is a process of receiving the logging time from the frequency divider 12 via the microcomputer interface 13 and further receiving the count value from the bus buffer 15.

The storing process is a process of outputting the logging information, the received logging time and the count value to the logging area of the memory 30 as a set of logging data. When logging data is output to a common logging area, a CPU identifier is added to the logging data.

Next, a logging management method using the logging clock of the present invention will be described with reference to FIGS.
The case where there are two U will be described. FIG. 5 is an explanatory diagram showing a specific example of the logging management method of the present invention. According to the logging management method using the logging clock of the present invention, as shown in FIG. 5, the count value "0" is set in the counter 14 as an initial value, and the value of each counter of the frequency divider 12 of the IC 1 'of the RTC is set. (Time) indicates 12: 00: 00: 00 on March 26, 1996.

Then, when the processing A is performed in the CPUa and the processing is completed, the CPUa starts the logging processing, and executes the clock reading processing from the frequency divider 12 in the clock reading processing to “9603261200”.
00 ”and a count value“ 0 ”from the bus buffer 15.

At this time, the counter value of the counter 14 is counted up to "1". Then, in the storage process, the CPUa stores the logging data relating to the process A in the logging area for the CPUa in the memory 30 as shown in FIG.

Subsequently, when the processing B is performed in the CPUa and the processing is completed, the CPUa starts the logging processing, receives the same logging time “960326120000” from the frequency divider 12 as the previous time by the clock read processing, and receives the same from the bus buffer 15. Receives the count value “1”.

At this time, the counter 14 counts up the counter value to “2”. Then, in the storage process, the CPUa stores the logging data relating to the process B in the logging area for the CPUa in the memory 30, as shown in FIG.

In the meantime, the process C is completed in the CPUb, the CPUb enters the logging process, and the clock reading process performs the same logging time “9603” as the CPUa from the frequency divider 12.
26120000 "and the count value" 2 "from the bus buffer 15.

At this time, the counter 14 counts up the counter value to "3". Then, in the storage process, the CPUb stores the logging data relating to the process C in the logging area for the CPUb in the memory 30, as shown in FIG.

Thereafter, the time is counted up by one second in the frequency divider 12. Then, when the processing D is performed in the CPUa and the processing is completed, the CPUa enters a logging processing,
Logging time “960326” from the frequency divider 12 in the clock read process
120001 "and the count value" 3 "from the bus buffer 15.

At this time, in the counter 14, the counter value is counted up to "4". Then, in the storage process, the CPUa stores the logging data relating to the process D in the CPUa logging area of the memory 30 as shown in FIG.

In the meantime, the processing E is completed in the CPUb, the CPUb enters the logging processing, and the clock reading processing performs the same logging time “9603” as the CPUa from the frequency divider 12.
26120001 "and the count value" 4 "from the bus buffer 15.

At this time, the counter 14 counts up the counter value to "5". In the storage process, the CPUb stores the logging data relating to the process E in the logging area for the CPUb in the memory 30 as shown in FIG.

At this time, the logging area of each CPU
Logging data as shown in FIG. 3 is stored. Thereby, each process of the CPUa and CPUb is completed in the order of A, B, C, D, and E according to the count value, and it is possible to grasp and analyze that the logging has been performed.

In the above description, the counter 14 for counting the number of accesses from the CPU has been provided in the logging clock 1. However, a plurality of CPUs separate from the logging clock 1 to the IC 1 ′ of the RTC. Counter means for counting the number of times of access and outputting a count value in response to a request from the CPU may be provided.

An example in which the first logging clock and the logging method of the present invention are applied to an information processing apparatus will be described with reference to FIG. FIG. 6 is a configuration block diagram showing an example in which the first logging clock and the logging method of the present invention are applied to a multi-CPU computer system.

The first logging clock and the logging method of the present invention are applied to a multi-CPU computer system,
As shown in FIG. 6, after a variety of processes are completed by a plurality of CPUs, a logging process is performed, the logging clock 1 is accessed, a logging time from the RTC 1 'and a count value from the counter 14 are obtained, and logging information is obtained. To the memory (common RA) as a common storage unit in addition to
M) It is stored in the logging area 30 and can be used for analyzing an abnormal situation occurring inside the information processing apparatus.

As described above, according to the first logging clock and the logging method of the present invention, the counter 14 of the logging clock 1 counts the number of times for each access for logging from the CPU. Since the logging time and the number of accesses are obtained from the logging clock 1 and added to the logging information and stored in the logging area, it is possible to accurately grasp the generation time of the logging information and the generation order.

Further, according to the information processing apparatus using the first logging clock and the logging method of the present invention, a plurality of CPs
Since the logging information in U is stored with the logging time and the number of accesses added, it is possible to accurately grasp the order of occurrence of events and abnormal states when an abnormal situation occurs, and obtain useful information for troubleshooting, etc. Can be.

Next, a second information processing apparatus, a logging management method, and a logging clock according to the present invention will be described. A second logging management method and a logging clock according to the present invention count the number of times the CPU accesses the logging clock when the CPU accesses the logging clock a plurality of times within a unit time of the logging clock. Since the logging time and the number of accesses are added to the logging information and stored in the logging area of the storage unit, even if a plurality of loggings occur at the same logging time, the order of the logging can be accurately identified. Things.

First, the configuration of the second logging clock according to the present invention and its surroundings is the same as that of the first logging clock shown in FIG. However, the contents of the logging process in the CPU and the operation of the logging clock are different from those of the first logging management method and the logging clock.

Specifically, in the first logging management method, the CPU outputs a read signal to the first logging clock to acquire the logging time and the count value during the clock reading process of the logging process. Had become.

On the other hand, in the second logging management method, in the clock reading process of the logging process, the CPU first reads the time read signal from the IC of the RTC of the logging clock 1.
1 ′ to acquire the logging time, and when the acquired logging time is the same as the previously acquired logging time, a count value read signal is output to the counter 14 and the bus buffer 15 to acquire the count value. Has become.

The first logging clock outputs the logging time from the RTC IC 1 ′, outputs the count value of the counter 14, and counts up the count value of the counter 14 in response to a read signal from the CPU. It was like.

On the other hand, the second logging clock uses a time read signal from the CPU and outputs the RTC IC.
1 ′, the logging time is output, and the count value of the counter 14 is output by the count value read signal from the CPU.
The count value of the counter 14 is counted up.

As a result, in the second logging management method,
Only when a plurality of loggings occur within the same logging time, the counting is performed and the count value is added to the logging information.

In the above description, the counter 14 for counting the number of accesses from the CPU has been described as being provided in the logging clock 1. However, separately from the logging clock 1, a counter value read signal from the CPU is used. Counter means for outputting a count value and counting up may be provided.

In the second logging management method, the CPU
Since it is determined whether or not a plurality of loggings have occurred within the same logging time, the method is applied to a case where the logging of a plurality of CPUs is collectively managed by one dedicated CPU.

FIG. 7 shows an example in which the second logging clock and the logging method of the present invention are applied to various information processing apparatuses.
This will be described with reference to FIG. FIG. 7 is a block diagram showing an example in which the second logging clock and the logging method of the present invention are applied to a circuit switch. FIG. 8 is a block diagram showing the second logging clock and the logging method of the present invention in a network center. FIG. 14 is a configuration block diagram illustrating an example of adaptation.

The second clock for logging and the logging method of the present invention are applied to a circuit switch, and as shown in FIG. 7, an internal CPU creates logging information of input / output data for each circuit switch, and Is received by the CPU 20 of the center, the logging clock 1 is accessed, the logging time and the count value are collectively managed, and the logging information to which the logging time and the count value are added is stored in the common storage unit (RAM And 30) can be collectively stored in 30 logging areas.

When the second logging clock and the logging method of the present invention are applied to a network center, as shown in FIG. 8, when an abnormality occurs in the communication process at each terminal, the communication is performed separately from the abnormality at each terminal. In order to centrally manage the abnormalities, the CPU 20 of the center accesses the logging clock 1 and adds the obtained logging time and count value to the logging information and stores them in the logging area of the storage unit (RAM) 30 of the center. As a result, it is possible to collectively store logging data such as abnormal processing that has occurred on the network.

As described above, according to the second logging clock and the logging method of the present invention, when a plurality of accesses occur within the same logging time in the logging clock counter 14, the number of times is counted. And CP
In U, the logging time and the number of accesses are added to the logging information and stored in the logging area. Therefore, if there is a plurality of loggings within the same logging time together with the logging time, the order of occurrence can be accurately grasped.

According to the circuit switch and the network center using the second logging clock and the logging method of the present invention, the logging information in the plurality of CPUs is collectively managed, and the logging time and the access count are added. Since the information is stored in a form, when an abnormal situation occurs, the order of occurrence of the events and abnormal states can be accurately grasped, and information effective for troubleshooting and the like can be obtained.

[0080]

According to the first aspect of the present invention, a plurality of C
The logging management method counts the number of accesses from the PU to the logging clock and adds the logging time and the number of accesses to the logging information to generate logging data. By expressing the order by the number of times of access,
There is an effect that it is possible to accurately grasp the order of occurrence of logging along with the time of occurrence of logging, and to obtain information effective for troubleshooting and the like.

According to the second aspect of the present invention, the counter counts the number of accesses from a plurality of CPUs,
A logging clock that outputs the logging time and the counter value for accesses from the server. Therefore, the logging order of multiple CPUs that occurred within the same logging time is output as the number of accesses, so that troubleshooting can be performed. There is an effect that effective information can be obtained.

According to the third aspect of the present invention, the logging clock outputs the logging time, and the counter means outputs a plurality of C times.
The information processing apparatus counts the number of accesses from the PU to the logging clock, and the control means adds the logging time and the number of accesses to the logging information and stores the data as logging data. By expressing the order of logging by the CPU by the value of the number of times of access, it is possible to accurately grasp the order of occurrence as well as the time of occurrence of logging, and to obtain information effective for troubleshooting and the like.

According to the fourth aspect of the present invention, the logging clock of the second aspect outputs the logging time and the counted number of accesses, and the control means logs the logging time and the number of accesses obtained from the logging clock. Since the information processing apparatus stores the data as logging data in addition to the information of the
By expressing the order of logging of U by the value of the number of times of access, it is possible to accurately grasp the order of occurrence together with the time of occurrence of logging, and to obtain information effective for troubleshooting and the like.

According to the fifth aspect of the present invention, since the processing by the control means according to the third or fourth aspect is performed by each of the CPUs that performed the logging in the multi-CPU system, the information processing apparatus is identical. By expressing the order of logging of a plurality of CPUs that occurred within the logging time by the value of the number of times of access, it is possible to accurately grasp the order of occurrence along with the time of occurrence of logging, and to obtain information effective for troubleshooting and the like. is there.

According to the present invention, when a plurality of CPUs access the logging clock multiple times within the same logging time, the number of accesses is counted, and the logging time and the number of accesses are logged. The logging management method is used to add logging information to the logging information, so that for multiple loggings occurring within the same logging time, the order is represented by the value of the number of accesses, so that the order of occurrence along with the logging occurrence time can be accurately determined. Thus, there is an effect that effective information can be obtained for troubleshooting and the like.

According to the seventh aspect of the present invention, when a plurality of accesses to the logging clock occur within the same logging time, the counter counts the number of accesses, and performs logging for accesses from a plurality of CPUs. A logging clock that outputs the time and the value of the counter makes it possible to obtain useful information for troubleshooting, etc. by outputting the order of multiple loggings that occurred within the same logging time as the number of accesses. There is an effect that can be.

According to the eighth aspect of the invention, the logging clock outputs the logging time, and the counter means counts the number of accesses when the logging clock is accessed a plurality of times within the same logging time. Since the control means adds the logging time and the number of accesses to the logging information and stores the information as logging data, the order of a plurality of loggings occurring within the same logging time is represented by the value of the number of accesses. By
There is an effect that it is possible to accurately grasp the order of occurrence of logging along with the time of occurrence of logging, and to obtain information effective for troubleshooting and the like.

According to the ninth aspect of the present invention, the logging clock according to the seventh aspect outputs the logging time and the counted number of accesses, and the control means logs the logging time and the number of accesses obtained from the logging clock. Since the information processing device stores information as logging data in addition to the information of the logging, the order of the logging that occurred during the same logging time is represented by the value of the number of times of access. There is an effect that the information can be accurately grasped and effective information for troubleshooting or the like can be obtained.

According to the tenth aspect, the eighth aspect is provided.
Since the information processing device that causes each of the CPUs that performed the logging in the multi-CPU system to perform the processing in the control means described in claim 9 or 10, the order of logging of the plurality of CPUs that occurred within the same logging time is determined by the access count. By expressing by a value, it is possible to accurately grasp the order of occurrence of logging as well as the time of occurrence of logging, and to obtain information effective for troubleshooting and the like.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of a first logging clock according to the present invention and its periphery.

FIG. 2 is an explanatory diagram showing a specific example of the operation of the counter of the present invention.

FIG. 3 is a format example in a logging area when a logging area is provided for each CPU.

FIG. 4 is a format example in a logging area when a common logging area is provided.

FIG. 5 is an explanatory diagram showing a specific example of the logging management method of the present invention.

FIG. 6 is a configuration block diagram showing an example in which the first logging clock and the logging management method of the present invention are applied to a multi-CPU computer system.

FIG. 7 is a configuration block diagram showing an example in which the second logging clock and the logging management method of the present invention are applied to a circuit switch.

FIG. 8 is a configuration block diagram showing an example in which the second logging clock and the logging management method of the present invention are applied to a network center.

FIG. 9 is a block diagram of a conventional logging clock and its surroundings.

FIG. 10 is an explanatory diagram showing an operation of a conventional logging management method.

FIG. 11 is an explanatory diagram showing a state of a logging area when a plurality of loggings occur within the same time.

[Explanation of symbols]

1, 1 '... logging clock, 2 ... backup power supply,
3. Operating power supply, 4, 4 'switch, 11 crystal oscillator, 12 frequency divider, 13 microcomputer interface, 14 counter, 15 bus buffer, 20 CPU 30 memory

Claims (10)

[Claims] In a system including a plurality of CPUs related to each other, when each CPU stores logging information in a common storage unit, the CPU accesses a common logging clock to set a logging time. In the logging management method of acquiring and adding the logging time to logging information to make logging data, the number of accesses from each CPU to the logging clock is counted, and the logging time and the number of times of access are counted. A logging management method characterized by adding logging information to information. 2. A logging clock which counts date and time and outputs the counted date and time as a logging time in response to access from a plurality of CPUs, wherein the counter counts the number of accesses from the plurality of CPUs. A logging clock which outputs the logging time and the value of the counter as the number of accesses in response to access from the plurality of CPUs. 3. An information processing apparatus for performing logging management in a multi-CPU system in which various programs are executed by a plurality of CPUs.
A logging clock that outputs the counted date and time as a logging time in response to an access from U, and counts the number of accesses to the logging clock from the plurality of CPUs, and An information processing apparatus comprising: counter means for outputting the number of accesses; and control means for adding the logging time and the number of accesses to logging information and storing the information as logging data. 4. An information processing apparatus for performing logging management in a multi-CPU system in which various programs are executed by a plurality of CPUs. A control unit for adding the number of times to logging information and storing the data as logging data. 5. An information processing apparatus characterized by causing each of the CPUs that performed logging of a multi-CPU system to execute the processing in the control means according to claim 3 or 4. 6. In a system including a plurality of CPUs related to each other, when each CPU stores logging information in a common storage unit, the CPU accesses a common logging clock to set a logging time. In the logging management method of acquiring and adding the logging time to logging information to generate logging data, when the plurality of CPUs access the logging clock multiple times within the same logging time, the logging is performed. A logging management method comprising: counting the number of accesses to a clock; and adding the logging time and the number of accesses to logging information to generate logging data. 7. A logging clock for counting the date and time and outputting the counted date and time as a logging time in response to access from a plurality of CPUs, wherein the logging clock is output from the plurality of CPUs within the same logging time. When access to the clock occurs multiple times, the plurality of CPUs
A logging clock provided with a counter for counting the number of accesses from the CPU, and outputting the logging time and the value of the counter as the number of accesses for accesses from the plurality of CPUs. 8. An information processing apparatus that performs logging management in a multi-CPU system in which various programs are executed by a plurality of CPUs, counts date and time, and sets a plurality of CPs.
A logging clock that outputs the counted date and time as a logging time in response to an access from U; and a plurality of times when the plurality of CPUs access the logging clock multiple times within the same logging time. CP
Counter means for counting the number of accesses from U to the logging clock and outputting the number of accesses in response to accesses from the plurality of CPUs; and adding the logging time and the number of accesses to logging information. Control means for storing as logging data. 9. An information processing apparatus which performs logging management in a multi-CPU system in which various programs are executed by a plurality of CPUs. A control unit for adding the number of times to logging information and storing the data as logging data. 10. An information processing apparatus characterized by causing each of the CPUs of a multi-CPU system to perform the processing in the control means according to claim 8.