JPH01266637A - System monitor controller - Google Patents

Abstract

PURPOSE:To monitor an operating state of a system, while operating its system and to execute a cause analysis and a recovery processing by on-line at the time when abnormality has been generated by providing an exclusive operation processor for executing only a monitor control of the system and storing a monitor program in an area of a main storage device. CONSTITUTION:A monitor program is started at a time interval which has been determined in advance at every monitor program by using a monitor 20, and an executing state of an execution program corresponding to the started program is monitored by a monitor operation processor 2 which has been connected to a main storage device 3. When abnormality has been detected, the cause is analyzed, and if it can be recovered, a recovery processing is performed, and when no abnormality is detected, regular monitoring is executed continuously. In such a way, when abnormality has been generated, the system is recovered by operating only the monitor operation processor 2, and other device than the device concerned of plural operation processors 11, 12 which have been connected to the main storage device 3 is allowed to continue a processing of a reference and updating.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a system monitoring and control device for monitoring the operation of a system in which a plurality of arithmetic processing units share a main memory and controlling recovery processing from an abnormal state. It is related to.

[Prior Art] Fig. 4 is a block diagram showing a conventional device of this type, in which (11) is an arithmetic processing bag fI, (12) is an arithmetic processing unit ■, and (3) is a main storage device. It is. Each arithmetic processing unit (11), (12) reads a program and data from the main storage device (3), performs data processing according to the program, and writes the data resulting from the processing to the main storage device (3).

This kind of operation is called referencing/updating the main memory (3), but referencing/updating the main memory (3) is performed by each arithmetic processing unit (
11) and (12), and records that need to be kept in advance in order to deal with the occurrence of an abnormal state are performed during this reference/update.

FIG. 5 is a flowchart showing the processing performed in response to the occurrence of an abnormal state, and in the figure, (sll) to (s1
Each block indicated by 4) represents each step. Records kept in advance to deal with abnormal conditions, detection of abnormal conditions, collection of corresponding information, system recovery, and cause analysis are all performed by each processing unit.

In other words, when it is detected that an abnormal state has occurred in step (sll), the arithmetic processing unit that detected it collects information in step (s12), recovers the system in step (slB), and analyzes the cause in step (s14). I do.

[Problem to be solved by the invention] Since the conventional system is configured as described above, the arithmetic processing unit that detects an abnormal condition must interrupt the program being executed and move on to executing the accident handling program. ,
There is a problem in that it is impossible to collect information or analyze the cause unless the system is temporarily stopped if necessary.

This invention was made in order to solve the above-mentioned problems in the conventional system, and aims to provide a system monitoring and control device that can analyze the cause and perform recovery processing without stopping the system even when an abnormal state occurs. The purpose is

[Means for Solving the Problems] In the present invention, a dedicated arithmetic processing unit that performs only system monitoring control is provided, and a monitoring program used by this dedicated arithmetic processing unit is stored in an area of the main storage device.

[Operation] When an abnormal state occurs, the monitoring processing unit operates to recover the system, so there is no need to stop the execution processing unit.

[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram showing an embodiment of the present invention. In the figure, the same reference numerals as in FIG. 4 indicate the same or corresponding parts.
) is the monitoring arithmetic processing unit (in contrast, the arithmetic processing unit (1
1), (12) are called execution arithmetic processing units), (4
) is a monitoring program storage area provided in the main memory. FIG. 2 is an explanatory diagram showing the contents of the program stored in the monitoring program storage area (4).
) is a monitoring monitor, and (21), (22), . . . (2n) are respective monitoring programs. Each monitoring program is provided corresponding to each program executed by the execution processing units (11) and (12), and is configured to enable detailed monitoring corresponding to the program to be monitored.

The type of program currently being executed by this system is informed to the monitoring monitor (20), and the monitoring monitor (20)
20) sequentially and cyclically starts the corresponding monitoring programs to monitor the respective corresponding execution programs.

FIG. 3 is a flowchart showing the flow of supervisory control according to the present invention, and each block (Sl) to (S6) represents each step. In step (Sl), the monitoring monitor (20) starts the monitoring programs at predetermined time intervals for each monitoring program. Therefore, steps (s2) to (s6) are execution steps for the activated monitoring program, and after a predetermined time has elapsed, step (Sl
) and the next monitoring program is started. In step (s2), the execution status of the execution program corresponding to the activated monitoring program is monitored by the monitoring arithmetic processing unit (2) with respect to the progress status of the execution program in the main storage device. When an abnormality is detected in step (S3),
The monitoring processing unit (2) follows the monitoring program (s4).

(s5) and (s6) are performed, but step <s5)
If the determination in step 3 is No, normal abnormality processing as before is entered. If it is determined that recovery is possible as a result of the cause analysis (S5) in (S4), the monitoring arithmetic processing unit (2)
) carries out the recovery process in step (S6), so the execution arithmetic processing units (11) and (12) do not need to stop the execution of the execution program. In other words, it is possible to recover from an abnormal state while online.

In the above embodiment, the case where the number of executing processing units is two has been described, but even in the case where there are two or more processing units, the monitoring control can be performed with one monitoring processing unit.

[Effects of the Invention] As described above, according to the present invention, the operational status of the system can be monitored while the system is running, and cause analysis and recovery processing can be performed online when an abnormality occurs. effective.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the contents of the monitoring program storage area of FIG. 1, and FIG. 3 is a flow chart showing the flow of monitoring control of the invention. FIG. 4 is a block diagram showing a conventional device, and FIG. 5 is a flowchart showing the flow of monitoring control executed in the system of FIG. 4. (11) and (12) are the execution arithmetic processing unit, (
2) is a monitoring arithmetic processing unit, (3) is a main storage device, and (4)
) is the monitoring program storage area, (20) is the monitoring monitor,
(21), (22>...(2n) are monitoring programs, respectively. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] A system that monitors the operation of a system having a plurality of arithmetic processing units and a main storage device shared among the plurality of arithmetic processing units, and controls the operation of the system when an abnormal state occurs. In the monitoring control device, a monitoring arithmetic processing unit is provided exclusively for monitoring the operation of the system, each monitoring program is provided corresponding to each program executed in the system and monitors the execution of the corresponding program, A monitoring program storage area of a main storage device that stores each of the monitoring programs, a monitoring monitor that causes the monitoring arithmetic processing unit to sequentially and cyclically execute the monitoring program corresponding to the program being executed in the system, and the monitoring arithmetic processing unit. The device monitors the execution status of the corresponding program under the control of the running monitoring program, and when an abnormality is detected, the device is equipped with a means for analyzing the cause of the abnormal state and performing recovery processing without stopping the running program. A system monitoring and control device characterized by: