JPH02128237A - Information processor - Google Patents

Abstract

PURPOSE:To prevent pseudo fault setting information from being destroyed and to promptly insert a subsequent pseudo fault even if a system is down due to the fault and a restarting processing is operated by holding pseudo fault setting information in a pseudo fault generation processor. CONSTITUTION:The processor has a central processing unit 1 and a service processor 2 being the pseudo fault generation processor. The service processor 2 has a pseudo fault-setting information selection part 21, a pseudo fault setting information file 22 and a pseudo fault generation part 23. Pseudo fault setting information is previously stored in the pseudo fault setting information file 22. At the time of recognizing the action of a fault processing means 14, the pseudo fault can be generated by performing a pseudo fault generation program without loading pseudo fault setting information on a main storage device. Thus, the subsequent pseudo fault can immediately be inserted even if a system is in the middle of a restarting processing and the main storage device is in a state that it cannot be used yet.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an information processing device that executes a pseudo-fault generation program to generate a pseudo-fault and confirms the operation of a fault handling means, and particularly relates to an information processing device that executes a pseudo-fault generating program to generate a pseudo-fault and check the operation of a fault handling means. Regarding.

[Prior Art] In the conventional method of generating a simulated failure using a simulated failure generation program, simulated failure setting information is loaded onto the main storage device from an external storage device such as a magnetic tape or a magnetic disk, and a simulated failure generation instruction is executed. (For example, Japanese Patent Publication No. 58-125067)
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[Solution to be Solved by the Invention [Fl] In the conventional pseudo-failure generation method described above, the pseudo-fault setting information must be loaded onto the main storage device, so the occurrence of a pseudo-fault causes a system down. In this case, after rebooting, when generating the next simulated failure, the simulated failure setting information must be loaded from the external storage device to the main storage again, which takes time and effort, resulting in continuous generation of simulated failures. Furthermore, since the main memory is used when a pseudo failure occurs, it is impossible to generate a pseudo failure before the main memory becomes available, that is, during startup. be.

[Means for Solving the Problems] The information processing device of the present invention has a simulated failure setting information storage unit that stores simulated failure setting information in advance, and a simulated failure setting information storage unit that is specified by a simulated failure generation program. a pseudo failure setting information selection unit that selects pseudo failure setting information according to the address of the pseudo failure setting information, and a pseudo failure generation unit that generates a pseudo failure according to the pseudo failure setting information selected by the pseudo failure setting information selection unit. the central processing unit executes a pseudo-failure generation program in which an address in a pseudo-fault setting information storage unit of a pseudo-fault generation instruction and pseudo-failure setting information related to the pseudo-fault is recorded; A decoder that identifies a pseudo-fault instruction in a faulty program; and when the decoder recognizes a pseudo-fault instruction, selects the pseudo-fault setting information of the pseudo-fault processing device from which the address of pseudo-fault setting information related to the pseudo-fault is detected. and a failure detection means for detecting a pseudo failure generated by the pseudo failure generation unit of the pseudo failure occurrence processing device and notifying the failure processing unit.

[Function] Since the simulated failure setting information is stored in advance in the simulated failure setting information storage unit, when checking the operation of the failure handling means,
without loading simulated failure configuration information into main storage.
A pseudo failure can be generated by executing a pseudo failure generation program.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the main part configuration of an embodiment of the information processing apparatus of the present invention, and FIG. 2 shows an example of pseudo fault setting information stored in the pseudo fault setting information file 22 of FIG. 1. It is a diagram.

The information processing apparatus of this embodiment includes a central processing unit 1 and a service processor 2 which is a pseudo-failure processing apparatus.

The central processing unit 1 has a decoder 11, a pseudo failure setting information address notification means 12, a failure detection means 13, and a failure processing means 14. When checking the operation of the failure processing means 14, the central processing unit 1 executes a pseudo failure generation program. Execute. This pseudo-fault generation program includes information stored in the pseudo-fault setting information storage unit 22 of the service processor 2, which stores pseudo-fault generation instructions and pseudo-fault setting information regarding the pseudo-failures to be caused by the pseudo-fault generation instructions. contains the address of. The decoder 11 identifies the pseudo-failure instruction when the central processing unit 1 is executing the pseudo-fault generation program, and upon recognizing the pseudo-fault instruction, sends a notification to that effect to the pseudo-fault setting information address notification means 12. Notice.

The pseudo-failure setting information address notification means 12 is the decoder 1
When receiving a notification from Service Processor 1 that a pseudo-fault generation instruction has been recognized, the pseudo-fault setting information selection unit of the service processor 2 refers to the pseudo-fault generation instruction and selects the address of the pseudo-fault setting information specified by the instruction. Notify 21. The failure detection means 13 detects failures during normal operation, and also detects pseudo-failures generated by the service processor 2 when checking the operation of the failure handling means 14, and transmits the failure situation to the failure handling means 14. Notice. When the fault processing means 14 receives a notification of the status of the fault that has occurred from the fault detection means 13, it performs fault processing operations depending on the content and situation of the fault.

The service processor 2 includes a pseudo-fault setting information selection section 21, a pseudo-fault setting information file 22, and a pseudo-fault generating section 23. The pseudo failure setting information file 22 is the second
As shown in the figure, it is provided with storage areas of addresses "0" to "n", each of which stores pseudo-fault setting information in advance.The pseudo-fault setting information selection unit 21
When receiving an address notification from the pseudo fault setting information address notification means 12, the pseudo fault setting information corresponding to the address is selected from the pseudo fault setting information file 22.

The pseudo-failure generation unit 23 includes the pseudo-fault setting information selection means 21
refers to the pseudo fault setting information selected by the controller, and generates a pseudo fault according to the setting information.

Next, the operation of this embodiment will be explained.

Here, a case will be considered in which an operand cache failure occurs in the central processing unit 1 and the validity of the cache failure handling function of the failure handling means 14 is evaluated. In FIG. 2, the operand cache failure setting information is stored at address "14" of the pseudo-failure setting information file 22, so the pseudo-failure generation program specifies address "!4" along with the pseudo-failure instruction. .

First, the central IA embedded device executes a pseudo-fault generation program, and when it reaches the pseudo-fault instruction that causes the operand cache fault described above, the decoder 11 recognizes that it is a pseudo-fault instruction and issues a message to that effect. The pseudo fault setting information address notification means 12 is notified. And pseudo failure setting information address notification means! 2 is the address "1" specified by referring to the notified pseudo-failure instruction.
The pseudo failure setting information selection unit 21 of the service processor 2
The operand cache failure setting information is selected from the pseudo failure setting information file 22.

When the pseudo fault setting information is selected, the pseudo fault generation unit 23
recognizes that this is operand cache failure setting information and generates an operand cache failure. thus,
When an operand cache failure, which is a pseudo failure, occurs, the failure detection means 13 of the central processing unit 1 performs a processing operation for the operand cache failure. Then, the validity of the failure handling function can be evaluated based on whether or not a predetermined failure handling result is obtained through the processing operation.

[Effects of the Invention] As explained above, the present invention maintains the pseudo-failure setting information in the pseudo-fault occurrence processing device, so that even if the system goes down due to a failure and restart processing is performed, the pseudo-fault setting information is not retained. Since it remains undestroyed, the next pseudo-fault can be inserted immediately.Also, even with the same pseudo-fault instruction, different pseudo-faults can be inserted by changing the pseudo-fault setting information in the pseudo-fault processing device. It is possible to easily cause a failure, and furthermore, it is possible to insert a pseudo failure even when the main storage device is not yet available during the system startup process, making it possible to debug the failure handling function during the system startup process. This method is more detailed and requires fewer man-hours than manual pseudo-failure insertion, and therefore has the effect of being able to efficiently evaluate the fault handling function of an information processing device over a wide range down to the smallest detail.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a main part configuration of an embodiment of an information processing apparatus of the present invention, and FIG. 2 is a block diagram showing a pseudo failure setting information file 22.
FIG. 3 is a diagram illustrating an example of pseudo failure setting information in FIG. DESCRIPTION OF SYMBOLS 1...Central processing unit, 2...Service processor, 11...Decoder, 12...Pseudo fault setting information address notification means, 13.
...fault detection means, 14.fault processing means, 21.. pseudo fault setting information selection section, 22.. pseudo fault setting information file, 23.. pseudo fault generation section.

Claims (1)

[Scope of Claims] 1. In an information processing device that executes a simulated failure generation program to generate a simulated failure and check the operation of a failure handling means, a simulated failure setting information storage in which simulated failure setting information is stored in advance. a pseudo failure setting information selection unit that selects pseudo failure setting information according to an address in the pseudo failure setting information storage unit specified by the pseudo failure generation program; and pseudo failure setting information selected by the pseudo failure setting information selection unit. a pseudo-failure occurrence processing device having a pseudo-failure generation unit that generates a pseudo-failure according to the pseudo-fault generation unit; A decoder that executes a pseudo-fault generating program whose address is recorded, and further identifies the pseudo-fault generating instruction of the pseudo-fault program, and when the decoder recognizes the pseudo-fault generating instruction as the pseudo-fault generating instruction, the pseudo-fault related to the pseudo-fault is detected. a pseudo-fault setting information address notification means for notifying an address of the setting information to a pseudo-fault setting information selection unit of the pseudo-fault occurrence processing device; and a pseudo-fault generating unit of the pseudo-fault occurrence processing device to detect the pseudo-fault that has occurred. and failure detection means for notifying the failure processing means of the failure.