JPS6162942A - Inspection system of information processor - Google Patents

Abstract

PURPOSE:To prevent a data change and take over the state at a stop by starting a patrol execution task for testing a processor at specific time, and saving information required for the next startup when an error is detected and stopping the execution task. CONSTITUTION:The patrol execution task 32 for testing the processor 41 connected to a main storage device 30 and an operating system 31 which controls the task 32 are stored in the device 30, and the system 31 is started up o monitor the operation state of the device 41, thereby starting the task 32 which is not in process of the work. Then, an instruction to be tested, etc., are transferred to a message area and executed, and its execution result is compared with an expected value; when they are not coincide, an error message is formed and outputted to a output device to save the information required to restart the system and stop the system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for testing an information processing device, and particularly to a health check method for testing under the control of an operating system.

[Prior art]

Conventionally, failures in this type of information processing equipment have been detected by check circuits within the equipment, and detection by the check circuits (therefore, if an undetectable failure occurs, it is detected in the form of logical contradictions in software such as the operating system). For this reason, the latter type of failures that are expected to be detected in the form of logical contradictions in software may not be detected even in software because the software was not created with the purpose of detecting hardware failures. there were.

In this case, the data would be garbled, and since the failure was detected a long time after the failure occurred, there was a fatal problem in that data recovery would be difficult.

[Purpose of the invention]

An object of the present invention is to provide an information processing device that prevents data from being garbled in the event of a failure that cannot be detected even by software, and at the same time allows an operating system to operate while taking over the state it was in when it was stopped. There are two ways to provide testing methods.

[Structure of the invention]

The information processing device inspection method of the present invention stores a patrol execution task for testing a processing device connected to a main storage device and an operating system that controls the patrol execution task in the main storage device, and an operating system that controls the patrol execution task. The system constantly monitors the operating status of the processing device and activates the patrol execution task when no work is being performed, and when the patrol execution task detects an error, it immediately notifies the operating system of a request to stop execution. The operating system that has been notified immediately executes an emergency stop process to save information necessary for the next startup, and then completely stops the operating system itself.

〔Example〕 Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an information processing apparatus to which the information processing apparatus inspection method of the present invention is applied. An operating system (hereinafter referred to as O8) 61 on the main storage device 60,
Patrol execution task 32 for testing the processing device (hereinafter referred to as CPU) 41 connected to the main storage device 60
is stored.

Next, the operation of executing a patrol in the information processing apparatus of this embodiment will be explained with reference to the flowchart of FIG.

0861 starts monitoring the operating status of the CPU 41 when startup is completed. Process 11 checks the operation status of the CPU 41, and if judgment 12 indicates that the work is being performed, process 11 is executed.
Control is returned to What if it's work? If it has not been executed, control moves to process 16, and a patrol execution task 62, which is an inspection program for the CPU 41, is activated.

Next, when the control is transferred to processing 14, information on the message area (the processing device to be tested (cpU41 in this example)),
Transfers information on instructions to be tested. In process 15, the instruction to be tested is executed. In process 16, the execution result of the instruction to be tested is compared with the expected value, and if the results match according to judgment 17, control moves to judgment 26. In judgment 23, if it is not the last test, the next test is similarly executed from process 14. If it is the last test, control returns from judgment 26 to process 11, and monitoring of the operating state of the CPU 41 is performed again.

If the execution result and the expected value do not match in judgment 17, control moves to process 18, and the execution result in process 15 and the expected value used in process 16 are transferred to the message area. Then, in step 19, an error message is created and output to a message output device (not shown). Thereafter, in process 20, a system stop request is notified to the OS31. Next, the control is transferred to process 21, and the OS 51 immediately collects the information necessary for starting up the system after the emergency stop as an emergency stop process, stores it on a disk (not shown), and then stops the system in process 22. .

In this example, the number of processing devices to be inspected was one, but two
It can be easily inferred that the present invention can be applied to information processing devices such as those in Taiwan and other countries.

〔Effect of the invention〕

As explained above, the present invention executes a program for checking the normality of a processing device every time a state in which the processing device is not performing work occurs, and immediately executes the program to the operating system when an error is detected. notify you of the suspension request;
The operating system that was notified immediately executed an emergency stop process to save the information necessary for the next startup, and then stopped the operating system itself. This will prevent data corruption due to malfunction of the processing device. At the same time, it has the effect of allowing the operating system to take over the information when a failure occurs.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an information processing device to which the inspection method of the information processing device of the present invention is applied, and FIG.
2 is a schematic flowchart of patrol execution for carrying out an inspection in the information processing device shown in the figure. 60... Main storage device, 31... Operating system, 32... Patrol execution task, 41... Processing device. Patent applicant: NEC Corporation, − Gate:゛

Claims (1)

[Claims] A patrol execution task for testing a processing device connected to the main storage device and an operating system that controls the patrol execution task are stored in the main storage device, and the operating system constantly monitors the operating state of the processing device. When the patrol execution task detects an error, it immediately notifies the operating system of an execution stop request, and the notified operating system immediately starts the next execution task. An inspection method for an information processing device characterized by stopping execution of the operating system itself after executing an emergency stop process to save information necessary for initialization.