JPS61283936A - Trouble detecting system - Google Patents

Abstract

PURPOSE:To facilitate an easy analysis of the cause of a trouble by stopping the operations of all devices within an information processing system or holding the internal state in case a certain device detects a trouble. CONSTITUTION:A bus 1 consisting of one or plural signals lines is connected to information processors 3-6 which are connected in series with each prescribed interface 2. If the processor 3, for example, detects a trouble, the processor 3 delivers the trouble detection information to the bus 1 and holds its internal state. While other processors 4-6 receive the trouble information through the bus 1 and hold their internal states respectively. Thus the internal states of those processors 3-6 are held when the processor 3 detects the trouble. As a result, the cause of a trouble can be analyzed easily even through another processor excluding the processor 3 has a trouble.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fault detection method, and particularly to a fault detection method for detecting a fault in each information processing device in an information processing system.

[Conventional technology]

Conventional failure detection methods have no function of stopping other information processing devices in the information processing system or saving the internal state.

[Problem that the invention seeks to solve]

For this reason, in the conventional failure detection method described above, when a failure is detected in a certain information processing device in an information processing system, it is possible for the detected information processing device to stop or save its internal state, but it is possible to If other information processing devices in the system are stopped or if there is a cause of a failure in another information processing device, there is a drawback that it is difficult to analyze the cause of the failure.

[Means for solving problems]

The fault detection method of the present invention is applied to an information processing system configured of a plurality of information processing devices connected in series through a specified interface, one or more signal lines connecting the information processing devices to each other. An information processing device that detects a fault issues fault detection information to the bus, saves its internal state, and stops, and other information processing devices that receive fault detection information from the bus detect the fault. It is configured to save the internal state and stop at the same time as receiving information.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

In the fault detection power formula shown in FIG. 1, a bus 1 composed of one or more signal lines connects n information processing devices 3, 4, 5, . Connected to 6.

Example: When the information processing device 3 detects a fault, it issues fault detection information to the bus 1 and saves its internal state. The other information processing devices @4.5.6 that received the failure detection information through the bus 1 save their internal states so that each information processing device 93 * 4 #5 when the information processing device 3 detects a failure Since the internal state of .6 is saved, even if the cause of the failure exists in a location other than the information processing device 3, the cause of the failure can be easily analyzed.

〔Effect of the invention〕

The fault detection method of the present invention has the effect that when a certain device detects a fault, it can facilitate analysis of the cause of the fault by stopping all the devices in the information processing system or saving the internal state. .

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

Claims (1)

[Claims] In an information processing system composed of a plurality of information processing devices connected in series through respective specified interfaces, a certain information processing device has a bus consisting of one or more buses connecting each information processing device. If a fault is detected in the bus, the information processing device issues fault detection information to the bus and saves or stops its internal state, and other information processing devices also save or stop their internal state at the same time they receive the fault detection information from the bus. A fault detection method characterized by stopping.