JP2846238B2 - System control management method by error trace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system control and management method using an error trace for facilitating the identification of an error source and controlling and managing a system according to the identified error source.

[0002]

2. Description of the Related Art In a conventional computer system including a memory system operating at a low speed and a small amount of hardware operating at a high speed, an error source is identified by the fact that error occurrence and error detection are performed simultaneously, It is assumed that error detection is performed before the source causes a change in the state of the program. That is, the program that started the operation that caused the error and the program that was being executed when the error was detected are in the same program state (user program or system program), and the program that caused the error and the program that detected the error are: Assuming that the process is the same, the cause of the error and the source of the error are determined, and the error is processed.

FIG. 23 is an explanatory diagram schematically showing an error occurrence situation in a computer system as time elapses. In the drawing, 1 and 2 show two different processes A and B. Reference numeral 3 denotes an execution state of the system program, and reference numeral 4 denotes an execution state of the user program. 5 to 9 show timings at which an operation for generating an error is performed, and 10 to 13 show the timings 5 to 5.
9 shows timings at which respective errors corresponding to the occurrence of errors by the operation of generating the error No. 9 are detected. Timing 5 and Timing 10, Timing 6 and Timing 11, Timing 7 and Timing 12, Timing 8 and Timing 13, Timing 9 and Timing 1
4 is a set of each error occurrence and error detection.

According to the conventional error source identification based on the premise that error detection is performed before the error source causes a change in the state of the program, the conventional computer system has a memory system that operates at a low speed and a small-capacity memory system. Since it is composed of hardware that operates at high speed (such as a cache memory or a write buffer for high-speed writing), the timing at which the operation for generating an error is performed and the timing at which the generated error is detected are different. The interval does not become as large as shown in FIG. 23, and the error recognition is performed on the assumption that the error occurrence and the error detection are performed at the same time and that the error detection is performed before the error occurrence source causes a change in the state of the program. Had been done.

[0005]

Although the error source of the conventional computer system has been identified under the above-described environment, recent advances in hardware technology have made it possible to use a higher-speed CPU and a higher-speed CPU. A computer system that uses a large amount of cache memory can be configured,
For this reason, even if the CPU executes an operation that generates an error, the resulting error is not immediately detected. On the other hand, the CPU can execute the program in the cache memory at a high speed. There is a situation where it is running far before the source of the error,
In some cases, the state of the program being executed does not match the state of the program where the error occurred.

That is, timings 5 and 10, timings 6 and 11, timings 7 and 12, and timings 8 and 1 shown in FIG.
3, among the sets of error occurrence and error detection, such as timing 9 and timing 14, in the set of error occurrence source and error detection of timing 6 and timing 11, timing 8 and timing 13, and timing 9 and timing 14,
Since the program state at the time when the error is detected is different from the program state of the error source, the error source cannot be accurately identified. In the set of timing 6 and timing 11, the user program is erroneously identified as the source of the error while the system program is incorrectly identified as the source of the error.
In the set of 3, the system program is the source of the error while the user program is incorrectly recognized as the source of the error, and in the set of the timing 9 and the timing 14, the unrelated process B is determined as the source of the error. Will be.

In other words, in the conventional computer system, the precondition that the execution program that easily caused the error and the execution program that detected the error are the same process is not satisfied, and it is difficult to detect an accurate error. Problem arises.

[0008] The invention of 請 Motomeko 1, an error cause
Accurate and easy certification of programs that use resources
For its object to obtain a system control management method according to an error trace that can be made.

According to a second aspect of the present invention, there is provided a program when an error occurs.
When the program status at the time of error detection differs from the program status
However, the error source can be accurately and easily identified.
For its object to obtain a system control management method according to an error trace that can.

According to a third aspect of the present invention, an error occurrence source is identified.
An object of the present invention is to provide a system control management method using an error trace that can be performed accurately and easily .

According to a fourth aspect of the present invention, an error occurrence source is identified.
An object of the present invention is to provide a system control management method using an error trace that can be performed accurately and easily .

According to a fifth aspect of the present invention, an error occurrence source is identified.
An object of the present invention is to provide a system control management method using an error trace that can be performed accurately and easily .

According to a sixth aspect of the present invention, an error occurrence source is identified.
An object of the present invention is to provide a system control management method using an error trace that can be performed accurately and easily .

According to a seventh aspect of the present invention, an error occurrence source is identified.
An object of the present invention is to provide a system control management method using an error trace that can be performed accurately and easily .

According to the present invention, the recognition of the error occurrence source is performed.
An object of the present invention is to provide a system control management method using an error trace that can be performed accurately and easily .

According to a ninth aspect of the present invention, an error occurrence source is identified.
An object of the present invention is to provide a system control management method using an error trace that can be performed accurately and easily .

According to a tenth aspect of the present invention, an error occurrence source is identified.
It is an object of the present invention to obtain a system control management method using an error trace , which can accurately and easily perform the control.

According to the eleventh aspect of the present invention, an error occurrence source is identified.
Data necessary for the operation can be collected efficiently,
It is an object of the present invention to obtain a system control management method based on error tracing , which can accurately and easily perform the setting.

According to a twelfth aspect of the present invention, an error occurrence source is identified.
It is an object of the present invention to obtain a system control management method using an error trace , which can accurately and easily perform the control.

According to a thirteenth aspect, an error occurrence source is identified.
It is an object of the present invention to obtain a system control management method using an error trace , which can accurately and easily perform the control.

According to a fourteenth aspect of the present invention, an error occurrence source is identified.
Accurate and easy, while improving system reliability.
It is an object of the present invention to obtain a system control management method using an error trace.

According to a fifteenth aspect of the present invention, an error occurrence source is identified.
Accurate and easy and increase the utilization of available resources
It is another object of the present invention to provide a system control management method using error tracing that improves the reliability of the system .

According to a sixteenth aspect of the present invention, an error occurrence source is identified.
Accurate and easy, while improving system reliability.
It is an object of the present invention to obtain a system control management method using an error trace.

According to a seventeenth aspect of the present invention, an error occurrence source is identified.
Accurate and easy, while improving system reliability.
It is an object of the present invention to obtain a system control management method using an error trace.

The invention according to claim 18 is a method for identifying an error occurrence source.
Accurate and easy, while improving system reliability.
It is an object of the present invention to obtain a system control management method using an error trace.

[0026]

Means for Solving the Problems The system control management method according to error tracing according to the invention of claim 1, the process
Tray to know which resources are used
Search the attribute information stored in the
Knowing the resources used by the
It is provided with a configuration for recognizing programs that use the used resources .

The system control management method according to error tracing according to the invention of claim 2, write buffer and cache
Error when using storage devices such as
When this occurs, the data in the storage device is fixed and the program is
The program state before the program
Stored in the trace buffer for the program status after
It is provided with a configuration for retrieving the attribute information thus obtained and certifying the error source .

The system control management method according to error tracing according to the invention of claim 3, the operating system
Created and managed according to the program usage
Or to a predefined program management table
Pointer, or a copy or
Write the attribute information of the program identifier in the trace buffer.
It has a configuration to remember .

According to a fourth aspect of the present invention, there is provided a system control management method using an error trace , wherein a change in a program state occurs.
Time since the program was created or the program status changed
Attribute information about overtime etc. in the trace buffer
It has a configuration for storing .

The system control management method according to error tracing according to the invention of claim 5 is generated and the detection time of the error
From the error detection time required to detect
At the time of error occurrence,
A change in the state of the program stored in the race buffer occurs.
Time since the program was created or the program status changed
When the above-mentioned error occurs due to attribute information such as overtime
Search for the program that was running at the moment and ask for it.
It is provided with a configuration that identifies the source .

According to a sixth aspect of the present invention, there is provided a system control management method using an error trace according to the type of error that has occurred.
List of error detection time required to detect duplicate errors
To determine the type of error that occurred.
The same error detection time is found by searching from the list
Error detection time and the error detection
The actual error occurrence time according to the type of error from the output time
And record it in the trace buffer as attribute information.
憶the state change of the program was or time has occurred professional
By the information of the elapsed time since the state of the gram changed,
The program executed at the time of the error occurrence determined above
Is searched for, and an error generation source is recognized .

The system control management method according to error tracing according to the invention of claim 7, up to the trace buffer
The storage of the attribute information relating to the state change of the program
The execution status of U is changed from user program to system program.
To the user program from the system program or from the system program.
It is provided with a configuration for performing the transition based on the transition to the system.

The system control management method based on the error trace according to the invention of claim 8, wherein the execution state of the CPU is non-privileged.
From privileged to privileged or from privileged to unspecified
To the trace buffer based on the transition to the authority level.
It is provided with a configuration for storing attribute information relating to a state change of a ram .

The system control management method according to error tracing according to the invention of claim 9, the interrupt process starts walking
At the end of the process, or
At the end of the
The state of the program in the trace buffer at the time timing
It is provided with a configuration for storing attribute information relating to a state change .

The system control management method according to error tracing according to the invention of claim 10, and out of the input-output device
When an error occurs during input or output
Hardware error or exception as an interrupt source
Or before the start or end of the embedded process
The start and end timing of interrupt processing,
Is traced at any time during interrupt processing.
Attribute information about program state changes to the
It is provided with a configuration for storing information .

According to the eleventh aspect of the present invention, there is provided a system control management method using an error trace .
CPU status value, time element, trace event number, various registers
The contents of the Star, program name, process name, message,
Address space identifier, process identifier, program identification
Child, process attribute information, program attribute information, message
Either a jqueue identifier or message queue attribute information
Or combine them into interface parameters
Meter and provided to the application program
Using the interface to change the state of the program
All the attribute information is stored as trace information .

According to a twelfth aspect of the present invention, there is provided a system control management method using an error trace , wherein
Attribute information in the hardware control circuit.
And a configuration for storing the data in a trace buffer .

The system control management method according to error tracing according to the invention of claim 13, b between the CPU and main memory
Interface circuit, external bus control circuit, local bus
Hardware such as control circuit, input / output control circuit, output memory
The state of the program is stored in the trace buffer provided in the
It is provided with a configuration for storing attribute information relating to a state change .

The system control management method using the error trace according to the fourteenth aspect of the present invention is recognized as an error source.
Depending on the type of program,
System execution, system shutdown, or
The cause of the error is recovered by delaying the execution of the program
The system is controlled by restarting and continuing
It is provided with a configuration for controlling and controlling .

The system control management method using an error trace according to the invention of claim 15 is recognized as an error source.
User program or user process
The user program or user process
Resources being used by the system
Control the system by returning it to the system management
It has a configuration for management .

The system control management method based on the error trace according to the sixteenth aspect of the present invention is recognized as an error source.
Memory area or various pipes used by the program
Free up resources such as management tables or I / O devices
Control and manage the system by returning it to the resource management pool
It is provided with a configuration to perform .

The system control management method using error trace according to the seventeenth aspect of the present invention is recognized as an error source.
Memory page that caused the error in the program
The resources that have caused other errors are
The system is configured to control and manage the system by not returning it to the management pool .

The system control management method using error trace according to the eighteenth aspect of the present invention is recognized as an error source.
Resource that caused the error in the program
Recovery from the error by changing the
The system can be restarted and resumed when it is restored.
Is provided for controlling and managing the information .

[0044]

According to the first aspect of the present invention, there is provided a system control management method using an error trace, wherein a process is stored in a trace buffer.
Attribute to know which resource is using
Information is stored, this attribute information is searched, and the searched
Which resources are used by the process based on attribute information
The source of the error is the ownership of the process.
If the resource is
Authorize the program as an error source.

In the system control management method based on the error trace according to the second aspect of the present invention, when an error occurs,
Data in storage devices such as embedded buffers and caches.
Before the state of the fixed and running program changes
Program state or changed program state
Search attribute information stored in the trace buffer such as
And accurately and easily identify the source of the error.

The system control management method using error tracing according to the third aspect of the present invention provides an operating system
Created and managed according to the program usage
Port to a predefined program management table.
Internet or copy or program of the management table
Trace buffer with the identifier of the ram etc. as attribute information
And retrieve the stored attribute information to generate an error
Accurately and easily certify sources.

The system control management method according to error trace in the invention of claim 4 is the state change of the program
The time when the event occurred or the status of the program changed
Store the elapsed time as attribute information in the trace buffer
Search the stored attribute information to correct the error source.
Certainly and easily certify.

The system control management method according to error trace in the invention of claim 5 is the detection time of the error gill
-The error in which the error actually occurred
-The time of occurrence and the program stored in the trace buffer
The time at which the program status change occurred or the program status
According to attribute information such as elapsed time after the change,
Search for the program that was running at the time of the error
Required to accurately and easily identify the source of error.
Make it work.

According to a sixth aspect of the present invention, there is provided a system control management method using an error trace , wherein
Required to detect the error sought from the list accordingly.
Error detection time and the error detection time
Find the actual error occurrence time according to the type, and
Of the program stored in the source buffer
Time elapsed since the program was started or the program status changed
The error occurrence time obtained by the attribute information such as time
Search for the program that was running
Accurately and easily certify the source program
to enable.

The system control management method according to errors traces in the invention of claim 7, the execution state of the CP U is pro
System changes from user program as gram state change
Transition to program or from system program
Trace buffer by transition to user program
To store attribute information indicating program status changes
Error source can be accurately and easily identified
To

The system control management method according to error trace in the invention of claim 8 is a state change of a program
CPU execution state changes from non-privileged to privileged
Or transition from privileged to unprivileged
And indicate the change of the program state to the trace buffer.
Accurate and easy to find error sources by storing attribute information
To be certified.

According to a ninth aspect of the present invention, there is provided a system control management method using an error trace in which an interrupt process is started.
Or finished timing, or both, or split
Trace buffer at any time during the loading process
Stores attribute information indicating program status changes to
Error source can be accurately and easily identified
To

[0053] The system control management method according to errors traces in the invention of claim 10, entering the input-output device
When an error occurs during output operation or input / output operation, or
Assignment of hardware errors or exceptions as interrupt factors
The start or end of the import process, or
The timing of the start and end of the interrupt processing,
Or at any time during interrupt processing.
Attribute information indicating a change in the state of the program to the source buffer
Information to identify the source of error accurately and easily.
To be able to

[0054] The system control management method according to error trace in the invention of claim 11 is a program counter
Value, CPU status value, time element, trace event number, various
Register contents, program name, process name, message
Page, address space identifier, process identifier, program
Identifier, process attribute information, program attribute information, message
Whether the message queue identifier or message queue attribute information
Or a combination of
Parameters and provided to the application program
Attribute information of the program using the interface
Information is stored in the trace buffer, and the error source is identified.
Efficiently collects data required for data acquisition and accurately identifies error sources
And allow for easy certification.

[0055] The system control management method according to errors traces in the invention of claim 12, hardware control times
The state of the program is stored in the trace buffer provided in the road.
Attribute information indicating a state change is stored.
Accurate and easy identification of error sources.

According to a thirteenth aspect of the present invention, there is provided a system control management method using an error trace .
Interface circuit, external bus control circuit, local bus
Hardware such as hardware control circuit, input / output control circuit, output memory
The program buffer is stored in the trace buffer provided in the hardware.
Trace information, which is attribute information indicating a state change, is stored,
Accurate error source identification based on stored trace information
And make it easier.

The system control management method based on the error trace according to the fourteenth aspect of the present invention is characterized in that an error source is identified.
Depending on the type of program approved,
Stop running the ram or stop the system,
Alternatively, the execution of the program is postponed and the cause of the error is
At the time of recovery, execution of the program or the system
Operation is resumed and continued, and the error
Improve the reliability of the stem.

In the system control management method using the error trace according to the fifteenth aspect of the present invention, the system is managed as an error source.
User program or user process
The user program or user process
The resources used by the system are managed by executing the management of the system.
System management means to increase the effective resource utilization rate.
To improve the reliability of the system against errors that occur.
Up.

The system control management method based on the error trace according to the invention of claim 16 is characterized in that an error occurrence source is identified.
User program or user process
The user program or user process
Memory area used by the database or various management tables
Resources such as files or I / O devices to their respective free resource management programs.
To improve the utilization rate of available resources,
Improve system reliability against errors.

[0060] Certification of system control management method according to error trace in the invention of claim 17 includes a source of error
Memory pages or
Indicates the resources that have caused other errors
Resource that caused an error by not returning it to the management pool
Prevents errors caused by reuse of
Improve the reliability of the system.

The system control management method based on the error trace according to the eighteenth aspect of the present invention recognizes that the
Of the accredited program
A program that has stopped running and has been identified as an error source
A resource that has caused an error in a job with an alternative resource
Recovery from the error, and when the cause of the error is recovered
To restart the process and continue
Improve the reliability of the stem.

[0062]

[Embodiment 1] An embodiment of the present invention will be described below with reference to the drawings. FIG.
FIG. 2 is a block diagram showing a configuration of a system control management method using an error trace according to the present embodiment. FIG. 2A is a block diagram in a case where the system control management method using an error trace is realized by a system program. () Shows the configuration of a system control management method based on error tracing using hardware for tracing. Fig. 1 (a)
In the figure, 21 indicates execution processing of a system program or a user program, 22 indicates a trace buffer in which trace information which is attribute information of the program is written,
Reference numeral 23 denotes an error determination program for determining the source of the error. In FIG. 2B, a trace process 22 is started by the user program 21a or the system program 21b to collect attribute information relating to a change in the state of the program.
4 is hardware for tracing processing that executes processing stored in the tracing device.

In the system control management method based on the error trace, when a change in the state of the program occurs, the attribute information of the process is stored in the trace buffer memory or the trace buffer area in the memory.
When an error occurs, the error determination program identifies the program that caused the error by tracing the attribute information stored in the trace buffer memory or the trace buffer area.

FIG. 2 is a flowchart showing a series of these operations. According to this flowchart, when a change in the state of the program occurs (step ST1), the attribute information of the program when the program indicates the state change is stored in the trace buffer 24 (step ST1).
2). Then, when an error occurrence is detected by the activated error occurrence detection processing function and the detected error occurrence error processing function (step ST
3) Then, the cause of the error is investigated (step ST).
4). In investigating the cause of this error, the cause of the error is known from the error information, the attribute information of the program is read from the trace buffer 24 (step ST5), and the source of the error is investigated and recognized from this attribute information (step ST5).
6). Then, error processing is performed on the identified error source according to the cause of the error (step ST).
7).

As a result, according to the present embodiment, when there is no trace buffer or memory area to be used as the trace buffer area, all process tables or other explicit or implicit system management information are covered. While the error source is identified by searching in a specific manner, attribute information relating to a change in the state of the program is stored in the trace buffer or the memory area used as the trace buffer area. It is possible to efficiently identify the program that caused the error.

Embodiment 2 FIG. An embodiment of the present invention will be described below with reference to the drawings. FIG.
Indicates the attribute information of the program stored in the trace buffer 24, and the attribute information 1 to n of the program are stored in the trace buffer 24 in the order of the occurrence time of the status change of the program. Trace buffer 2 of this embodiment
The attribute information of the program stored in the program 4 is stored in ascending order (tracing the attribute information of the past program in reverse order of the flow of time) or descending order (sequentially in the same direction as the flow of time). Tracing the attribute information).

Therefore, by storing the attribute information in the order of the generation time, it is easy to search for the newest one or the newest one in the order of the time and in accordance with the change over time, and the error occurrence source can be efficiently identified. Thus, it is possible to efficiently identify a program that has caused an error based on the attribute information of the program.

Embodiment 3 FIG. An embodiment of the present invention will be described below with reference to the drawings. FIG.
Is a detailed flowchart of step ST6 of the flowchart of FIG. 2 described in the first embodiment. In the present embodiment, the resource in which the error has occurred is detected, and the program which is the source of the error is identified from the resource which is the source of the error.

According to these flowcharts, the resources used by the process are confirmed from the attribute information of the program read from the trace buffer 24 in step ST5 (step ST6a). That is, the attribute information of the program includes information such as resources used by the process. The resources in this case are a memory area or an input / output device used by the program. Next, the resource information confirmed in step ST6a is detected (step ST6b),
It is determined whether or not the error cause has occurred from the detected resource (step ST6c). When it is determined that the error cause does not originate from the detected resource, the process returns to step ST6a,
The processing from step ST6b to step ST6c is
The process is repeated until it is determined that the cause of the error has occurred from the detected resource. Step ST6
If it is determined in c that the cause of the error has occurred from the detected resource, the process is determined to be the source of the error (step ST6).
d).

Therefore, also in the present embodiment, it is possible to efficiently identify the program that has caused the error based on the attribute information of the program.

Embodiment 4 FIG. An embodiment of the present invention will be described below with reference to the drawings. FIG.
Indicates the attribute information of the program stored in the trace buffer 24 of the present embodiment. The attribute information 1 to n of the program are stored and stored in the trace buffer in the order of, for example, the time of occurrence of the change in the state of the program. The attribute information is the attribute information of the program immediately before the state change occurred. In this case, the trace buffer 24
May be searched in ascending or descending order according to the flow of the program generation time.

FIG. 6 also shows the attribute information of the program stored in the trace buffer 24. The attribute information 1 to n of the program are stored in the trace buffer 24 in the order of, for example, the occurrence time of the program state change. The stored attribute information is attribute information of the program after the state change when the state change occurs. in this case,
The attribute information of the program stored in the trace buffer may be searched in ascending or descending order according to the flow of the generation time of the program.

Therefore, in this embodiment, the program which has caused the error can be efficiently identified based on the attribute information before or after the status change of the program stored in the trace buffer 24 due to the status change of the program. It is possible to do.

Embodiment 5 FIG. Hereinafter, an embodiment of the present invention will be described. In the system control management method using the error trace according to the present embodiment, when the hardware configuration has a write buffer or a cache, the write buffer is frozen when an error occurs, and the trace buffer is searched. However, here the cache or write buffer is FI
It operates in the FO system. That is, when the state of the new program after the state change is stored in the trace buffer, the state of the program changes immediately after the operation for generating the error is performed, and
If U detects an error after transitioning to the new state,
The PU performs an operation of writing the state change to the trace buffer, but at this time, the operation of writing the state change to the trace buffer remains in the write buffer.
At this point, the write buffer is temporarily frozen to stop the operation of writing the state change to the trace buffer as shown in the flowchart of FIG. Then, by retrieving and examining the attribute information stored in the trace buffer, it is easy to identify the error source. In this case, the attribute information stored in the trace buffer may be searched in the ascending order or the descending order described in the second embodiment when the attribute information is stored in the order of occurrence time.

Embodiment 6 FIG. An embodiment of the present invention will be described below with reference to the drawings. FIG.
FIG. 5 is an explanatory diagram showing a configuration of a trace buffer in the system control management method using error trace according to the embodiment. In the figure, reference numeral 31 denotes attribute information most recently stored in a ring-shaped trace buffer;
Reference numeral 3 denotes attribute information stored in each of the ring-shaped trace buffers in chronological order.

In this embodiment, the tracing buffer or the tracing buffer area has a ring-shaped ring buffer configuration, and the tracing buffer or the tracing buffer area is used cyclically. As a result, it is possible to improve the efficiency of using the trace buffer by repeatedly using the buffer that stores the oldest information when the ring buffer is full, without setting the trace buffer or trace buffer area wide. Becomes

In addition to configuring a ring buffer using connection information based on pointers, it is also possible to configure a ring buffer by using an array index to make the array configuration ring-shaped. Further, it is also possible to store a flag indicating whether information stored in each buffer constituting the ring buffer is valid or information indicating a storage time.

Embodiment 7 FIG. As the attribute information described in the first to sixth embodiments, as shown in FIG. 9, a pointer to a program management table, a part or all of a copy of the management table, or a process for identifying a process. A program identifier such as an ID or a task ID for identifying a task may be stored in the trace buffer together with other information.

Further, this information can be managed by the bit position of the management variable area for each resource.

Embodiment 8 FIG. Further, as the attribute information described in the first to sixth embodiments, the time at which the state of the program has changed or the elapsed time since the state of the program has changed may be stored in the trace buffer. Figure 10 is an explanatory view for illustrating a characteristic of one embodiment of a system control management method according to the error <br/> over trace. FIG. 2A is an explanatory diagram showing, on a time axis, an error occurrence time T1 and a time T2 from the occurrence of the error until the occurrence of the error is recognized by the CPU, and FIG. FIG. 7 is an explanatory diagram showing a transition of a process execution.

The operation of this embodiment will be described with reference to FIG. The trace buffer stores, as attribute information, a time at which a program state change occurs or an elapsed time since the program state change. As described above, when an error occurrence time is T1 and a time required from the occurrence of the error until the occurrence of the error is recognized by the CPU is T2, as shown in FIG. It can be determined that the program executed at the time indicated by (T1-T2) has caused an error. Therefore, from the explanatory diagram showing the transition of the process execution shown in (b) of FIG. 10, since the user program is being executed at the time Te, it can be recognized that the source of the error is in the user program.

Embodiment 9 FIG. In addition, from the occurrence of the error, the error
If the time T2 required until the error is recognized depends on the type of error that has occurred, the time T2 required before the error is recognized by the CPU is determined for each type of error as shown in FIG. It is also possible to make a table, read out an appropriate error recognition time T2 appropriate for the type of error that has occurred, and accurately identify the error source.

Embodiment 10 FIG. In addition, by storing a list of programs and resources used by the programs in the trace buffer as shown in FIG. 12, it is possible to search the trace buffer for a program using the resource causing the error. , It is possible to accurately and easily set the program in which the error has occurred.

Embodiment 11 FIG. Also, a context switch of a process can be employed as the timing for storing the attribute information of the program in the trace buffer. In the present embodiment, the timing at which switching from one process to another process is performed in step ST2 of FIG. To store attribute information in the trace buffer. As a result, the information on the execution order of the process is stored as attribute information in the trace buffer. When an error occurs, the attribute information stored in the trace buffer is searched, so that the error can be obtained before the error occurs. The execution order of the executed processes can be easily known, and the process executed at the time of occurrence of the error can be easily identified.

The above description will be more specifically described with reference to FIG. 10. Each time a process execution transition (here, process A → process B → process C) is performed, the process attribute information is changed to time information or time information. When the actual error occurrence time is found to be Te, the process executed at the time Te from the attribute information stored together with the time information is determined to be the process B based on the time Te. Is easily certified.

Embodiment 12 FIG. Hereinafter, an embodiment of the present invention will be described. In this embodiment, every time the execution level of the CPU changes in step ST2 of FIG. 2, a change in the state of the program is stored in the trace buffer. In other words, every time a system call, privilege level change, or interrupt occurs, the attribute information of the program is stored in the trace buffer so that the source of the error can be identified as an error source, whether it is a user program, a system program, or an interrupt program. It will be easier.

In FIG. 10, (S) shows the operation state of the CPU by the system program during the execution transition of the process.
(U) shows the operation state of the CPU by the user program. By storing the execution operation state of the CPU together with the time information in the trace buffer, at time Te, the CPU is in the execution state by the user program, and it can be easily recognized that the error source at time Te is in the user program. .

Further, by storing the change in the state of the program at the two timings in the trace buffer, the execution history of the program on the time axis (that is, process A “user state” → process A “system state” → process B “system state” → execution history such as process B “user state”).
It is possible to more reliably identify an error occurrence source.

When the attribute information of the program is stored in the trace buffer every time an interrupt or the like occurs, the attribute information of the program is stored every time an interrupt is caused by an input / output interrupt, an exception, or a hardware error. The attribute information of the program may be stored in the trace buffer, and the attribute information of the program may be stored in the trace buffer at the timing of starting or ending the interrupt processing, or both, or any timing during the interrupt processing.

Embodiment 13 FIG. An embodiment of the present invention will be described below with reference to the drawings. FIG.
FIG. 3 is a conceptual diagram illustrating a configuration of a system control management method using an error trace according to the present embodiment. In the present embodiment, a software interface by an application program for explicitly storing attribute information in a trace buffer from a user program is provided.
In the figure, 41 is a user program, 42 is a system program, 43 is an error determination program for certifying an error occurrence source based on attribute information stored in the trace buffer, and 44 is a trace buffer for explicitly transmitting attribute information from the user program. Is a software interface by an application program to be stored in the PC.

In the present embodiment, a software interface for explicitly storing attribute information in the trace buffer from the user program is provided, and the attribute information is explicitly stored in the trace buffer 24 from the user program 41 by this software interface. Is stored. In this case, the user program is clearly aware of storing the attribute information in the trace buffer 24 via the software interface 44.

The software interface parameters include a program counter value, a CPU status value, a time element, a trace event number, contents of various registers, a program or process name, a message, an address space identifier, a process identifier, and a program. There are identifiers, process attribute information, program attribute information, message queue identifiers, message queue attribute information, and the like, and these pieces of attribute information are stored in the trace buffer 24 via the software interface 44.

As a result, the value of the program counter,
CPU status value, time element, trace event number, contents of various registers, program or process name, message, address space identifier, process identifier, program identifier, process attribute information, program attribute information, message queue identifier, message queue attribute The storage of attribute information such as information in the trace buffer 24 can be controlled by software, and data effective for certifying an error occurrence source can be efficiently stored in the trace buffer 2.
4 can be collected.

Embodiment 14 FIG. Hereinafter, an embodiment of the present invention will be described. In the eleventh and twelfth embodiments, the description is made that the process of storing the attribute information of the program in the trace buffer is performed every time the context switch of the process or the execution level of the CPU is changed. The attribute information may be stored in the trace buffer only when the call is made. In this case, the factors to be specified in advance are the type of interrupt, the type of system call, the identifier of the process or program, the process name or the program name or the function name. The reading, writing, and execution of a specific address area can be the factors.

Embodiment 15 FIG. Hereinafter, an embodiment of the present invention will be described. In the present embodiment, the trace buffer is set in a hardware control circuit, and the control circuit is an interface circuit of a CPU and a main memory, an external bus control circuit, a local bus control circuit, and an input / output control circuit. Also, a trace buffer area is set in a predetermined area of the main memory.

FIG. 14 is a conceptual diagram showing the configuration of a system control management method using error tracing according to this embodiment. In the figure, 51 is a CPU, 52 is a CPU 51 and a main memory 5.
3, an external bus control circuit, 55 a local bus control circuit, and 56 an input / output control circuit.

FIG. 15 shows an interface 52 (hereinafter, PMI, Process) between the main memory 53 and the CPU 51.
FIG. 3 is a conceptual diagram in a case where a trace buffer (area) is provided in an “or memory interface”. In FIG. 15, the same or corresponding parts as those in FIG. 14 are denoted by the same reference numerals and description thereof is omitted, but reference numeral 60 denotes a cache memory, 61 denotes a write buffer, and 62 denotes a trace buffer (area).

The CPU 51 realizes a high-speed write process by writing data using the cache memory 60 and the write buffer 61 when writing data externally via the PMI 52. That is, the CPU 51
In the write operation to the outside, if the write target is a cached area, the write operation is once stored in the cache memory 60 and then queued in the write buffer 61. The CPU 51 shifts the control to another operation when the writing to the cache memory 60 is completed, and thereafter the writing operation is executed.
U51 is not affected by the processing delay caused by writing. The contents of the cache memory 60 are written to the main memory 53 via the write buffer 61.
Assuming that the write buffer 61 and the cache memory 60 of the CPU 51 are executing the write process by the FIFO method, the write operation of the actual CPU 51 and the actual physical write operation are performed for the write buffer 61 and the cache memory 60 of the CPU 51. Are not performed synchronously, and the processing is speeded up, while a time lag occurs between the occurrence of the error and the detection of the generated error, making it difficult to detect the error. Therefore, the problem caused by the asynchronousness of the error trace processing of the computer system at the time of the write processing is solved by setting the trace buffer in a specific hardware control circuit.

In this embodiment, when the state of the program changes, the new program state after the state change is stored in the trace buffer 62. For example, there is a change in the state of the program immediately after the error generating operation is performed, and the CPU 5
Suppose that an error is detected after 1 has transitioned to a new state.

That is, (1) an operation for generating an error is performed by the CPU 51, but an actual operation of writing the state change into the trace buffer 62 is stored in the write buffer 61. (2) Further, the program makes a state transition. The operation of writing the state transition to the trace buffer 62 is performed. The actual operation of writing the state change to the trace buffer 62 is accumulated in the write buffer 61. (3) Since the write buffer 61 is a FIFO, an operation for generating an error is executed first and the error is detected. The operation of writing the state change to the trace buffer 62 when the above-described processes (1), (2), and (3) proceed in order is that the operation remains in the write buffer 62 when an error is detected due to (3). become. So in this case,
The error detected by temporarily freezing the write buffer 61 and fixing the operation of the program state change in the write buffer 61 and examining the attribute information about the program state change stored in the trace buffer 62 is detected. It is easy to identify the origin.

FIG. 16 is an explanatory diagram showing the state of the write buffer 61 before an error occurs. Reference numeral 25 denotes error write operation information of a write operation for generating an error.
Reference numeral 26 denotes state change write operation information for performing a write operation to the trace buffer 62 with respect to a change in the state of the program. In this case, a write operation for generating an error is performed based on the error write operation information 25, and when an error occurs, the write buffer 61 is temporarily frozen,
The writing operation to the trace buffer 62 is not executed for the subsequent state change of the program. Therefore, the state prior to the occurrence of the error remains in the trace buffer 62, and it is possible to easily identify the source of the error based on the attribute information remaining in the trace buffer 62 when the error occurs.

Next, a method of identifying the error occurrence source in this case will be specifically described with reference to FIGS. 17, 18 and 23. In FIG. 23, S indicates that the system program is being executed, and U indicates that the user program is being executed. As described in the background art, the error generation source cannot be correctly identified for the pairs (6, 11), (8, 13), and (9, 14) of error occurrence and error detection. On the other hand, in the present embodiment, since the process at the time of error detection is different for the set (9, 14) of error occurrence and error detection, writing the process identifier in the attribute information of the trace buffer 62 causes the error occurrence. The original certification becomes possible.

FIG. 17 is an explanatory diagram showing a correspondence table for error source recognition in other cases. That is, in FIG. 23, at the time of error detection 11 and the time of error detection 13, since the request for updating the attribute information of the program regarding the occurrence of the errors 6 and 8 remains in the write buffer 61, the trace buffer 62 is examined. Thus, it is possible to know that the program state of the error detected at the time of error detection 11 was the user state, and that the program state of the error detected at the time of error detection 13 was the system state.

In the case of the error detection 10 and the error detection 12, since the attribute information of the trace buffer 62 and the state of the CPU at the time of error detection match, the source of the error occurrence is determined by the attribute information of the trace buffer 62. CPU status can be known. Therefore, as shown in FIG. 17, it is clear that the error source at the time of error detection 10 and error detection 11 is in the user program, and that the error source at error detection 12 and error detection 13 is in the system program. Become. That is, a set of error occurrence and error detection (6, 11) which could not be correctly identified in the past.
Also for (8, 13), the error occurrence source is correctly identified.

Similar effects can be obtained by storing the program state before the program state changes in the trace buffer 62 when the program state changes. FIG. 18 is a correspondence table when the program state before the change of the program state is stored in the trace buffer 62 when the state of the program changes. As in the case shown in the correspondence table of FIG. The error source at the time of detection 10 and error detection 11 is in the user program state after the change of the system program state, and the error source at error detection 12 and error detection 13 is the system program after the change of the user program state. It becomes clear that it is in a state. In other words, the error occurrence source is also correctly identified for the sets (6, 11) and (8, 13) of error occurrence and error detection that could not be correctly identified in the past.

Embodiment 16 FIG. Hereinafter, an embodiment of the present invention will be described. In the present embodiment, a process executed when an error occurrence source is identified according to the above-described first to fifteenth embodiments will be described. Regarding the processing based on the recognition of the error source, it is possible to delete only the program that caused the error from the system and continue the other processing, or to stop the entire system. For example, if the user process is the source of the error, all resources used by the program are released to the free resource pool, and if the system program is the source, the entire system is stopped. Alternatively, all or some of the currently running programs can be moved to another system.

Further, there is a method of stopping the execution of the program in which the error has occurred and continuing the execution of the other programs, or delaying the execution of the error generating process to continue the execution when the cause of the error is recovered. It is possible. That is, the cause of the error is an I / O error,
If the execution of the program cannot be continued without the I / O device, the program is stopped.If an alternative I / O device is available later, the program is stopped until the alternative I / O device becomes available. Suspend and suspend the execution of the program that caused the error.

Also, by recovering the resources used by the program that caused the error, it is possible to improve the utilization rate of the effective resources.

Further, it is possible to prevent the recurrence of the error by not returning the resource that caused the error to the free resource management pool. In other words, the cause of the error is a memory failure, and the main memory used by the program that has not failed is returned to the system as free memory. The use is prohibited until the cause of the error is recovered. If the resource that caused the error can be replaced with a substitute resource, do not return it to the free resource management pool as unusable and prohibit its use until the cause of the error is recovered, thereby improving system reliability. Is possible. That is, when an error occurs due to a failure of the memory device and the operation at the time of the error is a write process to the memory device, another memory is prepared as an alternative memory, and the write process is performed using the memory. , Error recovery becomes possible.

FIG. 19 is a flow chart showing the operation after the recognition of the error occurrence source in one embodiment of the present invention.
0 is a flowchart showing the operation after certification error source in the embodiment of the present invention, FIG 21 is a flowchart showing the operation after certification error source in the embodiment of the present invention, Figure 22 is the present invention 9 is a flowchart showing an operation after the recognition of an error occurrence source in one embodiment.

That is, according to the operation shown in the flowchart of FIG. 19, a program of the same type as the type of the program (the type of the system program or the user program) recognized as the error source is specified (step ST11). Then, it is determined whether or not the specified program type is a system program (step ST12). If it is determined that the program type is a system program, the entire system is stopped (step ST1).
3). On the other hand, if it is determined in step ST12 that the program is not a system program, that is, it is a user program, the execution of the user program corresponding to the program specified in step ST11 is stopped (step ST14). In this state, the user program corresponding to the specified program is in a halt state, but the other non-error-producing programs continue to be executed without stopping, and an operation for recovering the cause of the error is performed.

In the state where the user program is stopped, it is next determined whether or not the cause of the error has been recovered (step ST15). The execution is resumed and continued (step ST16).

According to the operation shown in the flowchart shown in FIG. 20, a program of the same type as the type of the program (the type of the system program or the user program) recognized as the source of the error is specified (step ST21) Further, the resources used by the specified program are confirmed (step ST22). The resources include a memory area, various management tables, and an input / output device used by a program that has been recognized as the source. Then, all or some of the resources confirmed in step ST22 are returned to the resource management system managing the resources (step ST23).

In the flowchart shown in FIG. 21,
The operation of returning the resources to the resource management system managing the resources in step ST23 shown in the flowchart of FIG. 20 is not performed (step S23).
T33) It is avoided that the resource causing the error is returned to the resource management system and used to cause the error to reoccur.

Further, according to the operation shown in the flowchart shown in FIG. 22, when the program which is the source of the error is recognized, error processing is started, and the execution of the recognized program is stopped (step ST41). Then, the resource used by the program recognized as the source of the error is checked (step ST42), and it is determined whether or not there is an alternative resource in place of this resource (step ST4).
3). When it is determined that there is no substitute resource and that the subsequent processing cannot be continued without using the substitute resource,
An interruption process for interrupting the process is performed (step ST44).
On the other hand, when it is determined in step ST43 that there is an alternative resource, the resource causing the error is replaced with the alternative resource (step ST45). Then, necessary setting data and the like are reset so that the status of the newly replaced alternative resource becomes the same as the status of the resource before the replacement (step ST46), and the execution of the program interrupted in step ST41 is started. Continue (step ST47).

[0116]

As described above, according to the first aspect of the present invention, the process stored in the trace buffer
An attribute of a process that can determine whether resources are being used.
Gender information, and based on this attribute information, the process
By knowing the resources used, the resources that caused the error
Configured to qualify programs that use resources
As a result, the error source can be accurately and easily identified.
is there.

According to the second aspect of the present invention, the write buffer
Error when using storage devices such as
When an error occurs, the data in the storage device is fixed and executed.
Before the program the state of the program that are line changes
Such as program status or program status after change
Search attribute information stored in the source buffer
Since the source is configured to be certified, the source of the error
This has the effect of making the certification accurate and easy.

According to the third aspect of the present invention, the operating
Management system according to the program usage
Managed or pre-defined program management
Pointer to the table or a copy of the management table
Alternatively, trace the program identifier etc. as attribute information.
And store it in the data buffer based on the stored attribute information.
Error occurred because the error source was configured to be certified.
This has the effect of making the original certification accurate and easy.

According to the fourth aspect of the present invention, the state of the program
When the status change occurs or the program status changes
Trace buffer as attribute information
And the source of the error occurrence based on the stored attribute information.
The error source is certified
This has the effect of making sure and easy.

According to the fifth aspect of the present invention, when an error is detected
Error detection required to detect an instantaneous error
Calculate the error occurrence time when the error actually occurred from the time
Of the program stored in the trace buffer
The time at which the status change occurred or the status of the program changed
From the attribute information such as the elapsed time since
Search for the program that was running at the time of the error
Request, and configured to identify the source of the error.
This has the effect of making accurate and easy recognition of the error source.

According to the sixth aspect of the present invention, an error that has occurred
Error detection required to detect errors according to the type of
A list of times is obtained in advance, and errors that occur
The error detection time corresponding to the type of error is detected from the list.
From the error detection time and the above list
The actual error in accordance with the type of error from the error detection time
The occurrence time is obtained, and the attribute
Time when the status change of the program stored in the
Or information about the elapsed time since the program status changed
The program executed at the time of the error occurrence
Search for programs and ask for the source of error
The program status and error
-An error occurs even if the program status at the time of detection is different
This has the effect of making the original certification accurate and easy.

According to the seventh aspect of the present invention, the execution state of the CPU
State from user program to system program
Or transition from the system program to the user program
Attribute information is stored in the trace buffer based on the
Changes in the status of the program stored in the trace buffer
Identify error sources based on attribute information about
The program status and error
-An error occurs even if the program status at the time of detection is different
This has the effect of making the original certification accurate and easy.

According to the eighth aspect of the present invention, the state of the program
CPU execution status changes from unprivileged level to privileged as state change
Level or from privileged to unprivileged
To store attribute information in the trace buffer,
Error based on the attribute information stored in the
-Since the source is configured to be certified, the source of the error
This has the effect of making the certification of the information accurate and easy.

According to the ninth aspect of the present invention, the interrupt processing
Startup or termination timing, or interrupt handling
Startup and termination timing, or interrupt handling
Attribute to trace buffer at any time timing in
Stores information and attributes stored in this trace buffer.
Error source based on gender information.
This has the effect of making accurate and easy
You.

According to the tenth aspect, the input / output device
Error at the end of I / O operation,
Using hardware errors and exceptions as interrupt sources,
When an interrupt factor occurs, it is assigned to the trace buffer.
Stores sex data, stored in the trace buffer
Configured to recognize error sources based on attribute information
Therefore, the program status when an error occurs and the
Even if the program status is different, the error source
It has the effect of being accurate and easy.

According to the eleventh aspect of the present invention, the program
Counter value, CPU status value, time element, trace event number
Number, contents of various registers, program name, process name,
Message, address space identifier, process identifier,
Program identifier, process attribute information, program attribute information
Information, message queue identifier, message queue attribute information
Any or a combination of these reports
As application parameters as application parameters.
Attribute information using the interface provided to the
Identify the error source based on the stored and stored trace information
Is configured to be effective
Efficient data collection and accurate error source recognition
And there is an effect that becomes easy.

According to the twelfth aspect, the hardware
To the trace buffer provided in the control circuit of
Storing attribute information indicating the state change of the ram, and storing the stored attribute
It is configured to recognize the error source based on the information
The program status when an error occurs and the program status when an error is detected.
Even if the program status is different, the error source
This has the effect of making sure and easy.

According to the thirteenth aspect , the CPU and the main memory
Memory interface circuit, external bus control circuit,
Local bus control circuit, input / output control circuit, and output memory.
A hardware control circuit is installed on these hardware.
The attribute information is stored in the trace buffer
Configured to identify error sources based on attribute information
The error source can be accurately and easily identified.
There is fruit.

According to the fourteenth aspect, an error source
Depending on the type of program certified,
Program execution or system
Error or postponed the execution of the program.
-When the cause has been resolved, the
Since the system has a configuration to restart and continue the operation of the system,
Error traces improve system reliability.
There is an effect that a stem control management method can be obtained.

According to the fifteenth aspect , an error source
Program certified as a user program or user
User process or user program
The resources used by the process are managed by the system.
The system is returned to the executing system management
System to control and manage
Errors that increase utilization and increase system reliability
The effect that the system control management method by trace can be obtained
is there.

According to the sixteenth aspect , an error source
Memory areas used by programs certified as
Resources such as various management tables and input / output devices
Control the system by returning it to the resource management pool
To increase the utilization of available resources.
Error traces to improve system reliability.
There is an effect that a system control management method can be obtained.

According to the seventeenth aspect, an error source
Memory page that caused an error with a program
Resources that caused a page or other error
Control the system by not returning it to the free resource management pool
Error management is repeated.
And improve system reliability
Provides a system control management method using error tracing
effective.

According to the eighteenth aspect, an error source
Substitute for failed resources in programs certified as
Recovering from errors by replacing resources
-When the cause is recovered, restart the process and continue
Errors that increase system reliability
The effect that the system control management method by trace can be obtained
is there.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a system control management method using an error trace according to an embodiment of the present invention.

2 is a flowchart showing the operation of the system control management method according to error tracing according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing attribute information of a program stored in a trace buffer in order of generation time in a system control management method using an error trace according to an embodiment of the present invention.

4 is a flowchart showing an operation of the error originated survey and certification process in the system control management method according to error tracing according to an embodiment of the present invention.

FIG. 5 is an explanatory diagram showing attribute information of a program stored in a trace buffer in a system control management method using an error trace according to an embodiment of the present invention.

FIG. 6 is an explanatory diagram showing attribute information of a program stored in a trace buffer in a system control management method using an error trace according to an embodiment of the present invention.

7 is a flowchart showing the operation of the system control management method according to error tracing according to an embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a configuration of a ring-shaped trace buffer in a system control management method using an error trace according to an embodiment of the present invention.

FIG. 9 is an explanatory diagram showing attribute information stored in a trace buffer in a system control management method using an error trace according to an embodiment of the present invention.

FIG. 10 is an explanatory diagram for explaining features of a system control management method using an error trace according to an embodiment of the present invention;

FIG. 11 is an explanatory diagram showing a list of error detection times in a system control management method using an error trace according to an embodiment of the present invention.

FIG. 12 is an explanatory diagram showing a list of used resources in a system control management method using an error trace according to an embodiment of the present invention.

FIG. 13 is a conceptual diagram showing a configuration of a system control management method using an error trace according to an embodiment of the present invention.

FIG. 14 is a conceptual diagram showing a configuration of a system control management method using an error trace according to an embodiment of the present invention.

FIG. 15 is a conceptual diagram in the case where a trace buffer is provided in the PMI 52 of the configuration of the system control management method using error tracing according to one embodiment of the present invention.

FIG. 16 is an explanatory diagram showing a state of a write buffer before an error occurs in a configuration of a system control management method using an error trace according to an embodiment of the present invention.

FIG. 17 is an explanatory diagram showing a correspondence table for knowing an error occurrence source based on a state of a program stored in a trace buffer in the configuration of the system control management method using an error trace according to an embodiment of the present invention;

FIG. 18 is an explanatory diagram showing a correspondence table for knowing an error occurrence source based on a state of a program stored in a trace buffer in the configuration of the system control management method using an error trace according to an embodiment of the present invention.

19 is a flowchart showing the operation after certification error source in the embodiment of the present invention.

FIG. 20 is a flowchart showing the operation after the recognition of the error occurrence source in one embodiment of the present invention.

21 is a flowchart showing the operation after certification error source in the embodiment of the present invention.

22 is a flowchart showing the operation after certification error source in the embodiment of the present invention.

FIG. 23 is an explanatory diagram schematically showing an error occurrence situation in a conventional computer system as time elapses.

[Explanation of symbols]

24, 62 trace buffer, 44 software interface, 51 CPU, 53 main memory, 5
4 external bus control circuit, 55 local bus control circuit,
56 input / output control circuit, 60 cache memory, 61
Write buffer.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-4364 (JP, A) JP-A-3-48946 (JP, A) JP-A-4-307641 (JP, A) JP-A-4-307 344542 (JP, A) JP-A-2-271435 (JP, A) JP-A-63-91749 (JP, A) JP-A-4-286035 (JP, A) JP-A-3-184130 (JP, A) JP-A-1-213727 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G06F 11/28-11/34

Claims (18)

(57) [Claims] 1. A storing trace information when an error occurs in the trace buffer, certifies error source by the stored trace information, the system control management method according to error trace to control and system management, the trace Buffer for the process
Know what resources the process is using
Attribute information is stored as trace information, the attribute information is searched, and the process is performed based on the attribute information.
Knowing the resources used by the
A system control management method using error tracing, characterized in that a program that uses a used resource is recognized . 2. Description of a writing buffer, a cache and the like.
When using the storage device, if an error occurs,
The data in the storage device is fixed and the
Program state or change before ram state change
In the trace buffer for the program status etc.
Paid by retrieving the attribute information, this <br/> system control management method according to error trace of claim 1, wherein to certify error sources. 3. An operating system for programming.
Created and managed or predefined according to ram usage
Pointer to the management table of the program being
Or a copy of the management table or identification of the program
The method according to claim 1, wherein children and the like are stored as attribute information in a trace buffer . 4. A time when a program status change occurs.
Or the elapsed time since the program state changed
2. The method according to claim 1, wherein all the attribute information is stored in a trace buffer . 5. The method according to claim 1, wherein an error detection time and an error that has occurred are detected.
The error detection time taken to issue
Find the error occurrence time, and trace
Time when the status change of the program stored in the
The other is the program state, such as elapsed time from the change
According to the attribute information, the process is executed at the obtained error occurrence time.
Search for and search for the program that was used to identify the source of the error
2. The system control management method according to claim 1, wherein: 6. An error according to the type of error that has occurred.
Preliminary list of error detection time required for detection
The error according to the type of error that occurred.
-Search for the detection time from the list and find the error.
Error from the output time and the error detection time
The actual error occurrence time according to the type of
Changes in the state of the program stored in the trace buffer
The time when the event occurred or the status of the program changed
The above-mentioned error occurred due to attribute information such as elapsed time
Search for the program that was running at the time and ask for it.
2. The method according to claim 1, wherein the source is identified . 7. Storing attribute information in a trace buffer.
The execution state of the CPU as a program state change.
From user program to system program or system
Based on transition from stem program to user program
2. The system control management method according to claim 1, wherein the method is performed. 8. The transition of the execution state of the CPU is performed by a program.
CPU execution state changes from non-privileged level
From privilege level or from privilege level to non-privileged level
8. The system control management method using error trace according to claim 7, wherein: 9. The execution state transition of the CPU is executed by an interrupt processing.
Start or end of processing, or interrupt
Start and end of processing, or interrupt
It is characterized by arbitrary timing during processing
A system control management method using an error trace according to claim 7 . 10. An interrupt processing in an input / output device.
If an error occurs during I / O operation termination or I / O operation, or
Causes a hardware error or exception as an interrupt source
10. The system control management method using error tracing according to claim 9, wherein: 11. A program provided to an application program.
Trace information using attribute information
When stored as a program counter value,
Status value, time element, trace event number, and various registers
Contents, program name, process name, message, address
Space identifier, process identifier, program identifier,
Access attribute information, program attribute information, message queue
Either an identifier, message queue attribute information, or
Combining those combinations with interface parameters
2. The system control management method according to claim 1, wherein: 12. A device provided in a hardware control circuit.
Attribute indicating a program status change in the trace buffer
The system control management method according to claim 1, wherein the sex information is stored . 13. An interface between a CPU and a main memory.
Circuit, external bus control circuit, local bus control circuit, input
Output control circuit and main memory as hardware control circuits
13. The system control management method using an error trace according to claim 12, wherein 14. A program recognized as an error source.
The execution of the accredited program according to the type of
Or shut down the system, or
When the execution of the program is postponed and the cause of the error is recovered,
Restart the execution of the program or the operation of the system
Claim 1 to control and manage the system by continuing
System control management method using the error trace described above. 15. A program identified as an error source.
Is the user program or user process,
The user program or user process is using
System management means that manages the resources
Controlling and managing the system by returning the source
4. A system control management method using the error trace described in 4 . 16. A program recognized as an error source.
Area used by the server or various management tables
Alternatively, allocate resources such as input / output devices to each free resource management pool.
The system is controlled and managed by returning it to a file.
5. A system control management method using the error trace according to 5 . 17. A program recognized as an error source
Memory page or other error that caused the error
Return the resources that generated the error to their respective free resource management pools.
16. Controlling and managing the system by not rejecting it
System control management method using the error trace described above. 18. A program recognized as an error source
By replacing the resource that caused the error with the substitute resource
After recovering from the error and recovering from the error cause
Control and manage the system by resuming and continuing processing
The system control management method using error tracing according to claim 14 .