JPS6139136A - Inspection system of information processor - Google Patents

Abstract

PURPOSE:To prevent a fault of the information processor from causing a change of data by executing a program which inspects the processor at constant intervals of time under the control of an operating system and stopping a system immediately if an error is detected. CONSTITUTION:A main storage device 30 is stored with the OS31, a test control task 32, and test execution tasks 33 and 34 for CPUs 41 and 42. The test execution tasks 34 and 34 are started successively and an end flag is turned off. The number of a CPU to be tested and information on an instruction to be tested are transferred to the message areas of the test execution tasks. A decimal addition instruction to be tested is executed and the result is compared with an expected value; when they coincide with each other, the next test is taken and when coincidence is obtained after the final test, the end flag is turned on. A timer is set and inspection is performed again a specific time later. When the coincidence is not obtained, an error message is outputted and the OS31 performs system stop processing to prevent data from changing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an information processing device testing method for testing a processing device connected to a main storage device, particularly a health check method for testing under 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 check circuits (2) where uncheckable failures occur in the form of logical contradictions in software such as the operating system. Therefore, failures that are expected to be detected in the form of logical contradictions in software may not be detected by software or software because the software was not created for the purpose of detecting hardware failures. 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 it would be difficult to recover the data.

[Purpose of the invention]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an inspection method for an information processing device that prevents failures of the information processing device from being detected by software and garbled data.

A program is executed to check the processing device every time the system is installed, and if an error is detected, the system is immediately stopped.

That is, the information processing device testing method of the present invention is for testing processing devices connected to a main storage device, and for controlling test execution tasks as many as the number of processing devices and one or more of the test execution tasks. A control task and an operating system that controls the test control task are stored in the main memory (2, the operating system always executes the test control task, and the test control task is executed at regular intervals). When all of the test execution tasks are started and the test execution task detects an error (2), it immediately issues a (2) execution stop request to the operating system, and the operating system immediately stops its own execution. shall be.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of an information processing apparatus to which the inspection method of the present invention is applied. The information processing device of this embodiment includes an upper storage device 3o and processing devices (hereinafter referred to as CPUs) 41 and 42 connected thereto, and a main storage device 60.
The operating system (hereinafter referred to as O8)
61, a test control task 32, a test execution task 66 which is a test program for the CPU 41, and a test execution task 64 which is a test program for the CPU 42 are stored.

FIG. 2 is a schematic flowchart showing the operation of the test control task 62 after 0861 starts the test control task 62;
FIG. 3 is a schematic flowchart of the decimal add instruction test within test execution task 33.34. Below is Figure 2! s
The operation of the information processing apparatus of this embodiment will be explained with reference to FIG.

First, in step 11, the test execution task 63 is started, and the end flag (not shown) for the test execution task 66 in the test control task 62 is turned off.

In step 12, the test execution task 64 is started and the end flag for the test execution task 64 in the test control task 62 (
(not shown). The logic of test execution tasks 66 and 64 is identical, a portion of which is shown in FIG. First, in step 21, information about the CPU number to be tested and the instruction to be tested is transferred to the message area of the test execution task. In step 22, the decimal addition instruction to be tested is executed. In step 23, the execution result of this decimal addition instruction is compared with the expected value, and in step 24 it is determined whether they match. If they match, the next test is performed (step 28). If the results match in the last test, the end flag is turned on to end the execution of the test execution task. In this way, if the test execution tasks 66 and 64 are completed successfully, the test execution task 36
．． The end flag for 34 is set to 2, after which the process moves from step 13 to step 14, and a 1 hour timer is set. After 1 hour, the process moves from step 15 to step 11, and the inspection is performed again. is executed (
Two. If they do not match in the determination at step 24, control of the program moves to step 25, where the execution result at step 22 and the expected value used at step 23 are transferred to the message sending canister. After that, in step 26, the error message is edited and output to a message output device (not shown). When control of the program is transferred to step 27, a stop request is sent to 0861, and a stop request is sent to 08
61 immediately performs (=system stop processing (not shown)), and it is possible to prevent the processing from proceeding even after data conversion occurs.

Although the number of processing devices to be inspected was two in the above embodiment, the present invention can be applied to any number of processing devices as long as it is one or more.

〔Effect of the invention〕

As explained above, the present invention prevents the malfunction of any processing device and the risk of data corruption by executing a program for checking the normality of the processing device for the number of processing devices at a fixed time interval (2). can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an information processing apparatus to which the inspection method of the present invention is applied, and FIG. 2 is a schematic flowchart showing the operation of the test control task 62 which is the center of control of the inspection program of the present invention. FIG. 6 is a schematic flowchart of the decimal addition instruction test among the programs that execute the test. 60... Main storage device, 31... Operating system, 62... Test control task, 33.34... Test execution task, 41.42... Central processing unit. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A test execution task for testing processing devices connected to the main storage device and as many as the number of processing devices, a test control task for controlling one or more of the test execution tasks, and an operating system for controlling the test control task. are stored in the main memory, the operating system constantly executes the test control task, the test control task starts all of the one or more test execution tasks at regular intervals, and the test execution task An inspection method for an information processing device, characterized in that when detection is detected, an execution stop request is not immediately made to the operating system, and the operating system immediately stops its own execution.