JPS62257542A - Diagnostic method for computer system - Google Patents

Abstract

PURPOSE:To diagnose the entire areas of a main storage device while diagnosing an input-output device by one time of diagnosis so as to sharply shorten the time required for making tests, by setting a program saving area in an empty area of the main storage device. CONSTITUTION:This method is constituted in such a way that the entire areas 2-4 of a main storage device, in which programs are arranged, can be diagnosed by utilizing the idling time of diagnosis while diagnosing an input-output device in parallel. In other words, a program saving area 4 is provided in an area 3 which has conventionally been used as an empty area and diagnostic programs are saved in this area 4. Diagnostic program monitoring 1 is carried out by successively actuating diagnostic programs 2a, 2b, ..., 2n as before and, finally, all the diagnostic programs are set to an operation completion waiting state. The diagnostic program monitoring 1 diagnoses the main storage by utilizing this idling time. Therefore, the entire areas 2-4 of the main storage can be diagnosed while diagnosing the input-output device by one time of diagnosis.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for diagnosing a computer system in a parallel operation test of the computer system.

[Conventional technology]

FIG. 3 shows a main storage device for a diagnostic program in a conventional parallel operation test of a computer system.

In FIG. 3, 1 is a diagnostic program monitor, 2 is a group of diagnostic programs that operate under the control of the diagnostic program monitor, 2a, 2b, . . . , 2n is a diagnostic program,
3 is an empty area where no program is stored.

Next, the operation will be explained. Diagnostic program monitor 1
The diagnostic program 2a is started first from the diagnostic program group 2 according to an instruction from an operator or automatically.

The activated diagnostic program 2a performs input/output activation in order to diagnose the input/output device according to a predetermined procedure, and waits for an operation completion interrupt. The diagnostic program monitor 1 starts the diagnostic program 2b when the diagnostic program 2a enters the waiting state. Diagnostic program 2
Similarly to the diagnostic program 2a, the program b also performs input/output activation and waits for completion of the operation.

In this way, the diagnostic programs are executed one after another, and eventually all the diagnostic programs wait for completion of their operations. The diagnostic program/monitor uses this free time to
The free space 3 of the main memory is diagnosed.

In this way, the parallel operation test diagnostic program
While diagnosing various input/output devices in parallel, the main storage device is also diagnosed using CPU idle time.

[Problem that the invention seeks to solve]

Since the conventional diagnostic program for parallel operation is configured as shown in FIG. 3, diagnosis of the main memory other than the free area, that is, the area where the diagnostic program monitor 1 and the diagnostic program group 2 are stored, is not performed. There was a drawback that it could not be done. Therefore, in order to diagnose the entire area of the main memory, it is necessary to load another diagnostic program for the main memory and perform the diagnosis, resulting in poor test efficiency.

The present invention has been made in view of these points, and its purpose is to provide a program save area in an area that was conventionally an empty area, and save a diagnostic program there. It is an object of the present invention to provide a diagnostic method capable of diagnosing input/output devices and all areas of a main storage device in a single diagnosis.

[Means for solving problems]

In order to achieve such an object, the present invention provides a method for diagnosing a computer system having various input/output devices, in which the input/output devices are diagnosed in parallel, and the main storage including the area where the program is located is The entire area is diagnosed using the free time of the diagnosis.

[Effect]

In the present invention, in one diagnosis, the entire area of the main memory is diagnosed while diagnosing the input/output device.

〔Example〕

FIG. 1 shows the main memory layout of each program for explaining an embodiment of the computer system diagnostic method according to the present invention.
The control sequence is shown in FIG.

In FIG. 1, 4 is an empty area. In this figure, the same or equivalent parts as in FIG. 3 are given the same reference numerals.

Next, the operation of the system will be explained using FIGS. 1 and 2. As in the prior art, the diagnostic program monitor 1 sequentially starts the diagnostic programs 2a, 2b, . Diagnostic program monitor 1 is
This free time is used to diagnose the main memory, and in this method, the entire main memory is diagnosed as follows. The control sequence at this time is shown in FIG.

Next, the control sequence shown in FIG. 2 will be explained.

The diagnostic program monitor l divides the main memory to be diagnosed into several blocks (step 11).

Diagnosis starts from the first block.

First, it is determined whether the first block is an area storing a program (Step 12). If it is a program storage area, the contents are moved to the program save area 4 (Fig. 2) (Step 13), and the CPU After correcting the address translation mechanism (step 14), the main memory of the block is diagnosed (step 15). In this case, the diagnostic program saved to the program save area 4 can diagnose the input/output device in the same way as before saving by modifying the CPU address translation mechanism.

When the main memory diagnosis of the selected block is completed, the saved diagnostic program is returned to its original position from the saved area (step 16), and the CPU address translation mechanism is restored (step 17). ), diagnostics of the input/output device continues as before the restore.

If the selected block is a program save area or a free area, the block is not saved and directly diagnosed (step 18).

When the diagnosis of one block is completed, it is determined whether or not all blocks have been completed (step 19). If not, the process returns to step 11, another block is selected, and the same diagnosis is performed.

By repeating this, the entire area of the main memory can be diagnosed.

In the above embodiment, the save area is provided in the main storage device, but the save area may be saved in an external storage device such as a fixed disk or a flexible disk. Furthermore, although this was carried out using a diagnostic program, it can also be applied to system software to perform online main storage device diagnosis.

〔Effect of the invention〕

As explained above, the present invention can diagnose the entire Sn area of the main memory while diagnosing the input/output device in a single diagnosis by setting a program save area in the free area of the main memory. Therefore, there is no need to separately execute a main memory diagnostic program, which has the effect of significantly shortening the test time.

[Brief explanation of drawings]

FIG. 1 is a program layout diagram for explaining an embodiment of the computer system diagnostic method according to the present invention, FIG. 2 is a flowchart showing a control sequence for a parallel operation test in a computer system, and FIG. 3 is a conventional computer system FIG. 2 is a program layout diagram for explaining a system diagnosis method.

Claims (1)

[Claims] In a method for diagnosing a computer system having various input/output devices, the input/output devices are diagnosed in parallel, and the entire area of the main storage device including the area where the program is located is diagnosed using the free time of the above diagnosis. A computer system diagnostic method characterized by: