JPS62120548A - Test system for information processing system - Google Patents

Abstract

PURPOSE:To facilitate the easy evaluation for trouble processing of an information processing system and to attain the restart of the system, by connecting a simulator substituted for a peripheral device to two input/output processors and securing the synchronization between a program which works under the control of an operating system and a test program set on a simulator. CONSTITUTION:The 1st and 2nd input/output processors 51 and 52 are connected to a main memory 1 of an information processing system. Then a simulator 6 substituted for a peripheral device is connected to both processors 51 and 52 via cables 511 and 512. While a magnetic disk device 9 is connected to the processor 51 via a magnetic disk controller 8. The test items of a test program 2 are informed to the simulator 6 via the processor 51 under the control of an operating system 3 of the memory 1. Then the synchronization is secured between the program 2 and a test program 7. The program 2 is used as an application program to test the system 3 and the processor 52.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a testing method for an information processing system in which a main storage device and a plurality of input/output processing units are connected to a central processing unit. This invention relates to an evaluation method for parts related to control of a control device.

[Conventional technology]

Conventionally, this type of test method connects the actual peripheral device to the input/output processing unit, and tests the input/output processing unit, central processing unit, main memory, and the operating system and operating system evaluation program on the main memory. was used to evaluate the operating system and input/output control device.

[Problem that the invention seeks to solve]

The conventional test method described above uses peripheral devices that are actual machines, so it is difficult to set various failure states of one peripheral device, and it is difficult to set the various failure states of one peripheral device.
It is difficult to evaluate failure handling within the operating system. In the case of a failure that makes the output device unusable, there is a drawback that the operating system becomes inoperable and continuous evaluation cannot be performed.

[Means for solving problems]

A test method for an undiscovered information processing system is to test the first one selected from a plurality of input/output processing devices. The second input/output processing device is connected to the simulator, and the first test program in the main storage notifies the second test program on the simulator of the test item name via the first input/output processing device. The first test program and the second test program are synchronized to test an operating system that controls execution of the first test program as one application program and a second input/output processing device. shall be.

In this way, a simulator is used instead of an actual peripheral device, and the simulator is connected to two input/output processing devices,
By synchronizing the test program running under the control of the operating system and the test program on the simulator, the operator can easily perform tasks such as processing of the input/output processing unit and switching of the input/output processing unit in the event of an error in a peripheral device. In addition, even if the input/output processing device becomes unusable, it can be reinstalled into the operating system after each evaluation, making continuous execution of each evaluation impossible. Become.

〔Example〕

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

FIG. 1 is a block diagram of an information processing system to which the information processing system testing method of the present invention is applied, and FIG. 2 is a main storage device 1. 7 is a flowchart showing the operation of test programs 2.7 each stored in the simulator 6. FIG.

The central processing unit 4 is connected to the main storage device 1, the input/output processing device 51, and the input/output processing device 52, the magnetic disk device 9 is connected to the input/output processing device 51 via the magnetic disk control device 8, and the simulator 6 is connected to the input/output processing device 51. It is connected to an input/output processing device 51 and an input/output processing device 52. On the \ storage device 1 is a test program 2 which is controlled by the operating system 3 in the same way as a general business program, and on the simulator 6 is a test program 7. Referring to FIG. 2, in test program 2, parent task JO controls child task J1, and in test program 7, monitor MO controls test To.

Next, an example of the operation of this embodiment will be described with reference to the drawings regarding a case where a test module whose test item number is TO in the test program 7 is selected and executed.

The processing JOI of the parent task JO in the test program z on the main storage device 1 is executed, the test module name TO to be executed is selected, and the test module name TO is sent to the operating system 3 via the cable 511 in the processing JO2. The monitor M performs writing processing to the simulator 6.
The test module name is successively outputted from the cable 511 in the process MOL of O, the test module name To is identified in the process MO2, the necessity of starting the test module TO is recognized, and the control of the program is performed by the test module. It is moved to the processing TOI in the TO, and is in a state of waiting for reading via the test cable 521.

On the other hand, in test program 2, program control is transferred to JO3, and test module 1 corresponding to test module TO
1 is selected, and control is transferred via the operating system 3 to the process Jll within the child task Jl. Processing JI
In L, after the above-described waiting process is performed for a predetermined time until the read TOI is executed by the test program 7, a write process is performed via the operating system 3 and the cable 521 in process J12.

In the processing TOI in the test program 7, after receiving the write command via the cable 521, instead of responding normally to the bus cable 521, which is performed in a normal peripheral device, processing TO2 is performed in which the data is returned 1000 times in a short period of time. As a result, the input/output processing unit 52 is unable to process the large number of attentions received via the cable 521, and reports the IOP check to the central processing unit 4.
OP check information (not shown) is notified to the operating system 3 in the main storage device l. The operating system 3 determines that the input/output processing device 52 is inoperable, stops using the input/output processing device 52, and
Error information including abnormal termination information of the write process J12 and information on frequent attentions of the input/output processing device 52 is written as an error log to the magnetic disk device 9 via the magnetic disk control device 8 via the input/output processing device 51.

Next, the operating system 3 restarts the child task J as part of the failure processing of the operating system 3.
Write process J that scheduled l and the process is suspended
Since the input/output processing device 52 is inoperable, the operating system 3 controls the input/output processing device 51 to write data via the cable 511 via the input/output processing device 51.

On the other hand, the test program 7 moves from processing TO2 to processing TO3 and is in a state of waiting for reading via the cable 511, and upon receiving a write command via the cable 511 in processing J12, the test program 7 executes the bus cable 511 with a normal peripheral device. After the above data transfer is performed, a normal response process for the read operation and a response process for confirming that the read data matches a previously prepared expected value (not shown) are performed via the cable 511 in process TO4. , After receiving the response from the process TO4 via the cable 511 in the process J13 of the child task Jl of the test program 2, the process J14 notifies the operating system 3 that the input/output processing device 52 has returned to the usable state ( (not shown), and the operating system 3 recognizes that the peripheral device (actually the simulator 6) connected via the input/output processing device 52 via the cable 521 is unusable.

Regarding the execution results of the test module To, check the abnormal termination information of the write command based on the error log editing output result on the magnetic disk device 9 and the attention frequent information of the input/output processing device 52, and also check the processing JO in the parent task JO.
4, the input/output processing device 5
It is possible to evaluate failure processing of the operating system 3, including the switching processing from the operating system 2 to the input/output processing device 51.

〔Effect of the invention〕

As explained above, the present invention uses a simulator in place of an actual peripheral device, connects the simulator with two input/output processing devices, and provides a test program running under the control of an operating system and a test program on the simulator. By synchronizing these, it is possible to easily evaluate operating system failure handling, including input/output processing unit processing and input/output processing unit switching when one peripheral device has an error. Even if the device becomes unusable, each evaluation can be executed continuously by reincorporating it into the operating system after each evaluation is completed.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of an information processing system to which the information processing system testing method of the present invention is applied, and FIG. 2 is a main storage device 1. 7 is a flowchart showing the operation of test programs 2.7 each stored in the simulator 6. FIG. l... Main memory. 2.7...Test program. 3......Operating system. 4... Central processing unit. 51.52... Input/output processing device. 511.521 ...Cable. 6...simulator. 8...Magnetic disk control device. 9...Magnetic disk device. 11th!1

Claims (1)

[Scope of Claims] In an information processing system in which a main storage device and a plurality of input/output processing devices are connected to a central processing unit, first and second input/output devices selected from the plurality of input/output processing devices are provided. The processing unit is connected to the simulator, and the first test program in the main memory notifies the second test program on the simulator of the test item name via the first input/output device, and then communicates with the first test program. A test of an information processing system characterized in that a second test program synchronizes to test an operating system that controls execution of the first test program as one application program and a second input/output processing device. method.