JPH07160649A - Distributed control system - Google Patents

Abstract

PURPOSE:To provide a distributed control system for shortening the processing execution time of the entire system and improving processing performance by smoothing job processing load amounts in plural operation process control systems. CONSTITUTION:The respective operation process control systems 11, 21 and 31 are provided with process execution control parts 12, 22 and 32, execution job selection control parts 13, 23 and 33 and process control system selection control parts 14, 24 and 34 and the respective selection control parts are provided with the various kinds of management tables for managing the load amount and utilize them for smoothing loads. 1 is a job activation distribution system, 10 is a transfer network, 41 and 51 are operation systems and 61 and 71 are operation instruction systems.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed control system in which a plurality of systems each having a control unit for controlling execution of a work are distributed and arranged via a transfer network, and particularly to a processing load on the control unit of the system. The present invention relates to a distributed control system including control means for smoothing a processing load amount of a control unit that controls execution of work in order to smooth the amount.

[0002]

2. Description of the Related Art Conventionally, an operation process control system has been proposed as a method for controlling the execution of business in an operation system in which various functions for processing business are distributed and arranged. Here, the operation system is a system that performs maintenance management of communication network components such as an exchange using a control device having a processing device and a memory, and is a system that performs various tasks by controlling software on the processing device. The operation process control system is a system in which a commercial software is operated on a control device (hereinafter, abbreviated as a control unit) to execute a series of controls. For the technology related to the operation process control system, see, for example, Oyamada and Takahashi “Business integrated control system that realizes flow-through operation-Operation process control system-) NTT R & D,
VOL. 41 NO. 6 (1992).

In the above conventional method, the work controlled by the operation process control system is fixed in advance to a specific operation process control system. In addition, in the business execution control method by the conventional operation process control system, the operation process control system
There was no mechanism for restricting work depending on the type of work. Regarding the control method of the above-mentioned operation process control system, see Japanese Patent Laid-Open No.
It is publicly known as described in Japanese Unexamined Patent Publication No. 093972 “Operation Process Control Method” and the above-mentioned documents.

[0004]

The above-mentioned conventional method has the following problems. That is, in the conventional method, since the operation process control system for controlling the business is pasted and fixed to the corresponding operation process control system in advance, the operation process control system is overloaded. However, it was impossible to request the processing from another operation process control system. As a result, there is no mechanism for smoothing the processing load even if the operating process control system is overloaded and the operating process control system that is not used very often coexist due to variations in operating status. Sometimes had poor processing performance.

Further, even if the operation process control system becomes overloaded and a queue is formed, which adversely affects the execution speed of processing,
Depending on the type of business, it was not possible to apply or not apply restrictions, so continue execution or
Regardless of the type of work, there was no choice but to put restrictions on the whole. In the former case, that is, when the execution is continued as it is, for example, it is not possible to prioritize control even for highly urgent work such as trouble shooting work.
As a result, the execution speed is likely to be adversely affected. Also, in the latter case, that is, in the method of collectively regulating the entire operation process control system, there is no mechanism for controlling in consideration of the type of business, so it is also necessary to regulate highly urgent business such as failure countermeasure work. Sisters,
As a result, there are inconveniences in carrying out the work, such as an increase in the work execution processing time. An object of the present invention is to provide a distributed control system which solves the above problems and reduces the processing execution time of the entire system and improves the processing performance by smoothing the work processing load in each operation process control system. To do.

[0006]

SUMMARY OF THE INVENTION To achieve the above object, the present invention comprises one or more operating systems,
The system comprises one or more work instruction systems, a plurality of operation process control systems, and a data transfer network interconnecting these systems. The operation system controls execution of operation functions of communication network components including a switch. And a memory, and the work instruction system includes a processing device, a memory, and an input / output device, and the operation process control system includes a processing device that controls execution of work, a memory, and the processing. The operation system or the work instruction system is provided with a means for comparing the processing load amount with a predetermined threshold value by using a table provided on the memory for sequentially storing the processing load amount of the apparatus. Is started, the operation process control system When the processing load in the operation process control system is lower than the threshold value, the operation is executed by the operation process control system, and when it is higher than the threshold value, another operation process control is performed via the data transfer network. It is characterized in that the system is entrusted with the execution processing of the above-mentioned work.

Further, the operation process control system is predetermined using a processing device for controlling execution of work, a memory, and a table provided on the memory for sequentially storing the processing load amount of the processing device. A means for comparing the processing load with a threshold value and a table provided on the memory for storing the execution priority set in advance for the task are used to suspend and resume the task in execution. Means is provided, and when the business activation command data is transmitted from the operation system or the work instruction system, the operation process control system performs relative operation when the processing load amount in the operation process control system is higher than the threshold value. Jobs with low execution priority are interrupted, and then the processing load If lower than the value which is characterized in that so as to resume the task that is a suspended state. Further, there is provided a business activation command data distribution system having update means for sequentially storing the processing loads of the plurality of operation process control systems and selecting means for selecting the operation process control system having the minimum processing load from the table. When the business activation command data is received from the system or the work instruction system, the business activation command data is transmitted to the operation process control system after the operation process control system having the minimum processing load is determined by the selecting means. It has a feature.

[0008]

According to the present invention, the operation process control system is provided with a table for sequentially storing the processing load amount of the processing device, and it is predetermined when the business activation command data is transmitted from the operation system or the work instruction system. If the processing load amount in the operation process control system is lower than the threshold value, the task is executed by the system using the means for comparing the threshold value with the processing load amount, and if the processing load amount in the operation process control system is higher than the threshold value. The other operation process control system accommodated in the transfer network entrusts the execution of the work to prevent overload and smooth the load. Further, by interrupting the relatively low priority business processing by using the execution priority, it is possible to minimize the interruption of the execution of the high priority business processing by the low priority business processing. be able to. Furthermore, by providing a business activation command data distribution system, it is possible to prevent only a specific operation process control system from becoming overloaded and to achieve load smoothing.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The distributed control system of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an overall configuration diagram of the distributed control system of the present invention. In FIG. 1, 1 is a business activation command data distribution system that receives business activation command data centrally and distributes the business activation command data to each operation process control system 11, 21, 31. 2 is a business activation command data distribution system. Business activation command data distribution control unit, which is one functional block of
Reference numeral 3 is a task-specific load management table that manages the activation frequency and load status of each task executed in each operation process control system, and reference numeral 4 is a system-specific load status management table that manages the load status of each operation process control system. . Various management tables and software are on a memory, and the control unit has a processing device (hereinafter, the control unit has the same processing device and memory).

Reference numerals 11, 21, and 31 denote an operation process control system for controlling execution of work, and 12,
22 and 32 are process execution control units for controlling business processes from the transmitted communication data, 13, 23 and 33.
Is an execution task selection control unit that controls whether execution is continued or interrupted when overloaded, and 14, 24 and 34 are operation process controls that control whether or not to request processing from other operation process control systems when overloaded The system selection control units 41 and 51 are network components 43 and 53 such as exchanges to be maintained.
Operating system for maintenance and management of 4
2 and 52 are operation function execution control units that perform central control in the operation system, 61 and 71 are work instruction systems that interface with the operator, and 63 and 73 are work instruction terminals that serve as input / output means in the interface with the operator. , 62, 72 are operation function execution control units 5, 15, 25, 35, 45, 5 for centrally controlling the work instruction system.
5, 65 and 75 are communication data transmission / reception control units for controlling communication between systems, and 10 is a data transfer network which is a medium for data communication.

FIG. 2 shows the operation process control system selection control unit 1 in the first embodiment of the present invention.
4 is a functional block configuration diagram in FIG. In FIG. 2, 81
Is an operation process control system determining unit that determines whether or not to request the other operation process control system to execute the work. Reference numeral 82 is a work-specific load management table that manages the amount of processing load on the operation process control system for each work. Reference numeral 83 is a load state management table that manages the total processing load of all the jobs being executed, and 84 is a transfer for determining the system when requesting the execution of jobs to another operation process control system at the time of overload. It is a destination system ranking management table.

FIG. 3 shows the table formats of the work load management table 82, the load status management table 83, and the transfer destination system order management table 84. As shown in FIG. 3A, the work-based load management table 82 includes a work type column 801, a unit work load amount column 802, a number of in-progress cases 803, and a work-based total load amount column 804. The total work load value is the product of the unit work load value and the number of executions. The load state management table 83 is
As shown in FIG. 3B, it includes a threshold value column 821 and a total load amount column 822. The value of the total load amount is the sum of the values of the total load amount for each work in the work load management table 82. Transfer destination system ranking management table 84
Is the priority order column 84 as shown in FIG.
1 and destination process control system column 842
It consists of

FIG. 4 is a functional block diagram of the execution work selection control unit 13 in the second embodiment of the present invention. In FIG. 3, reference numeral 91 is an execution work determination unit that determines a work to be continued when overloaded, reference numeral 92 is a work load management table for each work that manages a work load amount for each work set in advance, 9
Reference numeral 3 is a task-specific processing load count table that manages the total processing load for each job, and 94 is a total processing load count table that manages the total processing load of all jobs executed by the operation process control system.
Reference numeral 5 is a job-specific priority management table that manages a preset processing priority for each job when overloaded, and reference numeral 96 is a job execution status management table that manages the status (running or suspended) of the job being executed. Is.

The table formats of the task-specific processing load amount management table 92, the task-specific processing load amount count table 93, the total task load amount count table 94, the task-specific priority management table 95, and the task execution status management table 96 are respectively defined. As shown in FIG. As shown in FIG. 5A, the task-specific processing load management table 92 includes a task type column 901 and a unit task load amount column 902. The processing load count table 93 for each work is shown in FIG.
As shown in (b), it includes a work type column 921, a number of execution cases column 922, and a total load amount column 923 for each work. The total work load value is the product of the unit work load value and the number of executions. As shown in FIG. 5C, the total processing load amount count table 94 includes a total load amount column 941 and a threshold value column 942. As shown in FIG. 5D, the work priority management table 95 includes a work type column 961 and a priority column 962. The job execution status management table 96 is shown in FIG.
As shown in FIG.
1, business type column 982, business activation source system type column 98
3 and an execution status column 984.

FIG. 6 shows a table format of the work-specific load management table 3 and the system-specific load state management table 4 provided in the business activation command data distribution system 1. The work load management table 3 is shown in FIG.
As shown in (a), the system type column 861,
It is composed of a work type column 862, a unit work load amount column 863, a number of cases under execution column 864, and a work-based total load amount column 865. The total work load value is the product of the unit work load value and the number of executions. In addition, the system-based load state management table 4 includes a system type column 881, a threshold value column 882, and a total load number column 8 as shown in FIG. 6B.
83 and a usage rate column 884. The value of the usage rate is (total load value) / (threshold value).

Before starting a detailed description of the embodiments of the present invention, the term "processing load" used in this specification will be defined. The "processing load amount" means the number of times controlled by the operation process control systems 11, 21, and 31 per unit time for each business. Therefore, the unit of processing load is, for example, [number of times /
Minutes]. The processing load amount for each work is calculated from the statistical value of the work executed in the past. Further, the unit of the threshold value for judging the magnitude of the processing load is also [number of times / minute].

<< First Embodiment >> First, a distributed control system according to a first embodiment of the present invention will be described in which, when the processing is concentrated in a certain operation process control system, the processing is requested to another operation process control system. Detailed description will be given with reference to FIGS. 1, 2, and 3 described above, FIG. 7 showing a processing flowchart, and FIG. 8 showing an example of data in the system at that time. It is assumed that the work instruction system 61 sends start command data for a certain task to the operation process control system 11 (step 201). Then, the operation process control system 11 having received the business activation command data (step 202), the "threshold value" 32 of the data item 331 of the load state management table 83.
1 value "270" and "total load" 322 value "273.7"
The load state is determined by comparing (step 203). The value “273.7” of the data item “total load amount” 322 is the sum of the “total load amount by work” 304 of the data items 311 of all the records 312, 313, 314, and 315 of the load management table for each work 82. is there. Here, when the value of the “threshold value” 321 of the load state management table 83 is larger than the value of the “total load amount” 322, that is, when the processing performance has a margin, the process execution control unit 12 performs the relevant job. Start control (Step 2)
11). Then, while controlling the execution of the work (step 213), the notification data for starting the work is transmitted to the work instruction system 61 of the work starting source (step 212).

In the example of FIG. 5, as described above, the value "273.7" of the "total load amount" 322 of the load state management table 83.
Is larger than the value “270” of the “threshold value” 321, the operation process control system that controls the execution of the task is searched (step 204). The operation process control system of the transmission destination is searched according to the data item "priority" 341 of the transfer destination system ranking management table 84. In the example of FIG.
The "destination operation process control system" 342 corresponding to the highest priority, that is, the value of the "priority" 341 is "1" is "B"(Note; B is related to the communication node address when transferring data). Since the data includes the data), the business activation command data is transferred to the operation process control system "B" (in this case, the operation process control system 21 is assumed) (step 205). The execution work selection control unit 23 of the operation process control system 21 that has received the transferred work activation command data (step 206), the load state management table 8 managed in the own operation process control system 21.
With reference to No. 3, it is determined whether or not the task can be executed in the own system (step 207).

In the example of FIG. 5, the load state management table 83
The value “260” of the “threshold value” 381 is “total load amount” 38
Since the value of 2 is larger than "230.8", the processing capacity still has a margin, and the task is controlled in the own system (steps 221, 222, 223). Note that the contents of steps 221, 222, and 223 are the same as those of steps 211, 212, and 213 described above, and thus description thereof will be omitted. On the other hand, when the processing capacity is not sufficient, the transferred business activation command data is returned to the operation process control system 11 of the transmission source (step 208). The operation process control system selection control unit 14 of the operation process control system 11 that has received the returned business activation command data (step 209) again refers to the transfer destination system order management table 84, and refers to the new destination operation. The process control system is retrieved (step 204). In the example of FIG. 5, since the value of the “priority” 341 is “2” and the “destination operation process control system” 342 is “M”, the operation process control system M
(In this case, it is assumed that it is the operation process control system 31) is the destination. By the above procedure, when the business start command data is further transmitted to the overloaded operation process control system,
It becomes possible to request processing to the operation process control system having a margin, and as a result, the processing load amount of the operation process control system is dispersed and smoothed.

<Second Embodiment> Next, when the operation process control system for centrally controlling the execution of work becomes overloaded, the work of relatively low priority is interrupted. The distributed control system according to the second embodiment will be described in detail with reference to FIGS. 1, 4, and 5 described above, FIG. 9 showing a processing flowchart, and FIG. 10 showing an example of in-table data in the system at that time. To do. It is assumed that the function execution result data is transmitted from the operation system 41 to the operation process control system 11 (step 601). The function execution result data is function end notification data transmitted from the operation system or the like when performing a task. The execution work selection control unit 13 of the operation system system 11 that has received the function execution result data (step 60
2), referring to the data items “total load amount” 721 and “threshold value” 722 of the total processing load amount count table 94,
It is determined whether the "total load amount" 721 exceeds the "threshold value" 722 (step 603).

In the example of FIG. 10, the value "337" of the "total load" 721 exceeds the value "330" of the "threshold value" 722 (step 604). It is determined whether or not the priority of the job is searched and the restriction is applied (step 605). If the job has a low priority (for example, the job having the smallest numerical value when the priority is expressed in five steps) (step 606), the current job is restricted (step 607). ).
Here, the regulation is a command for interrupting the execution of the business, and the data item “execution status” 7 of the business execution status management table 96.
This is done by updating the contents of 44. In the example of FIG. 10, the record 74 of the job execution status management table 96
By changing the value of the data item “execution state” 744 of 9 from “execution” to “suspend”, the business of the business instance type “012346” is suspended. An example of data in each table at this time is shown in FIG. And
The regulation notification data is transmitted to the activation source of the regulated business (step 608). The work instruction system 61 that has received the regulation notification data displays the regulation contents on the work instruction terminal 63 and ends the processing (step 609).

If the total load does not exceed the threshold value in step 604, or if the task in question is a task of high priority in step 606, the function execution result data is sent to the process execution controller 12. It is delivered (step 611) and the execution control of normal work is continued (step 612). According to the above procedure, when the operation process control system becomes overloaded, it is possible to suppress the deterioration of the entire processing performance by restricting (setting to the suspending state) the work with low priority.

<< Third Embodiment >> Next, the business start instruction data is centrally managed, and the business start instruction data is distributed according to the processing load condition of the operation process control system for controlling the execution of each business. The distributed control system according to the third embodiment of the present invention is shown in FIGS. 1 and 6 described above, FIG. 12 showing a processing flowchart, and FIG. 13 showing an example of data in the management table of the business activation command data distribution system 1 at that time. Will be described in detail.
It is assumed that the work instruction system 61 sends the start instruction data of a certain work to the work activation command data distribution system 1 (step 401). Then, the business activation command data distribution system 1 that has received the business activation command data (step 402) compares the values of the data item “utilization rate” 524 of the system-based load state management table 4 to determine the load state of each system. And the destination operation process control system of the business activation command data is determined (step 403). Here, the data item “utilization rate” 524 is (“total load amount” 5
23 value) / (“threshold value” 522 value).

In the case of the example in FIG. 13, the utilization rate of the system A and the system B is "0.67", while the utilization rate of the system "C" (in this case, the operation process control system 31 is assumed). The utilization rate is "0.63", which is the lowest utilization rate. Therefore, the business activation command data distribution system 1 transmits the business activation command data to the operation process control system 31 (step 404). At the same time, the data item “total load by business” 50 of the business-specific load management table 3
5. Update the data of "number of cases under execution" 504 (step 405).

The operation process control system 31 which has received the business start command data (assuming that the system "C" corresponds to the system 31: step 40
6) The control regarding the work set in the work start instruction data is started (step 407). Then, the business activation notification data is returned to the work instruction system 61 which is the business activation notification data transmission source (step 408). The work instruction system 61 that has received the business activation notification data can identify which operation process control system the operating process control system 31 activated by the business activation notification data is (step 409).

On the other hand, the operation process control system 31 starts the execution control of the work (step 410) and controls the execution of the work. When the business execution control is completed (step 411), business completion notification data is transmitted to the business activation command data distribution system 1 (step 412). The business activation command data distribution system that has received the business end notification data (step 41
3) In order to manage the latest processing load data, the data item “number of cases under execution” 50 of the work-based load management table 3
4. Update the data of "total work load by work" 505 (step 405).

According to the above procedure, when the business activation command data is issued, it becomes possible to transmit the business activation command data to the operation process control system having the lightest processing load at that time, resulting in the operation process control. The processing load of the system is distributed and smoothed. In the first to third embodiments described above, the operation process control system is described as an independent system.
One operation process control system
Not necessarily a single workstation. One operation process control system may be realized on one processor in a multiprocessor computer.

[0028]

As described above, according to the present invention, in a situation where a plurality of systems for executing work are distributed and arranged, when the processing concentrates on a certain system, the processing is requested to another system. It is possible to maximize the performance as a whole. In addition, when the operation process control system that centrally controls the execution of work becomes overloaded, by interrupting the work with relatively low priority, work with high priority such as failure search can be executed without any hindrance. It becomes possible to do. As a result, it becomes possible to continue the execution of important tasks without degrading the system performance. Furthermore, in the situation where multiple systems that control the execution of tasks are arranged, the task start instruction data is centrally managed, and the task start instruction data is distributed according to the processing load status of the system that controls the execution of each task. The effect of smoothing the processing load of each system and improving the processing performance of the system that controls the execution of work as a whole system. Also,
When the configuration of the present invention is adopted, it is possible to deal with a temporary increase in load even when a system having a lower performance is used when designing a system, and there is also an effect of suppressing the system development cost.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a distributed control system of the present invention.

FIG. 2 is a functional block configuration diagram of an operation process control system selection control unit.

FIG. 3 is a format of various tables in an operation process control system determination unit.

FIG. 4 is a functional block diagram of an execution work selection control unit.

FIG. 5 is a format of various tables in an execution work determining unit.

FIG. 6 is a format of various tables in the business activation command data distribution system.

FIG. 7 is a processing flowchart of the first embodiment of the present invention.

FIG. 8 is a diagram showing an example of data in various tables in the first embodiment of the present invention.

FIG. 9 is a processing flowchart of the second embodiment of the present invention.

FIG. 10 is a diagram showing an example of data in various tables according to the second embodiment of the present invention.

FIG. 11 is a diagram showing an example of data in various tables according to the second embodiment of the present invention.

FIG. 12 is a processing flowchart of the third embodiment of the present invention.

FIG. 13 is a diagram showing an example of data in various tables in the third embodiment of the present invention.

[Explanation of symbols]

1 Business start command data distribution system 2 Business start command data distribution control unit 3 Business load management table 4 System load state management table 5, 15, 25, 35, 45, 55, 65, 75 Communication data transmission / reception control unit 10 data Transfer network 11, 21, 31 Operation process control system 12, 22, 32 Process execution control unit 13, 23, 33 Execution task selection control unit 14, 24, 34 Operation process control system selection control unit 41, 51 Operation system 43, 53 Network components such as exchanges 42, 52 Operation function execution control unit 61, 71 Work instruction system 62, 72 Operation function execution control unit 63, 73 Work instruction terminal 81 Operation process control system Determining unit 82 Work load management table 83 Load state management table 84 Transfer destination system order management table 91 Execution work determining unit 92 Work processing load amount management table 93 Work processing load amount count table 94 Total processing load count table 95 Work Different priority management table 96 Business execution status management table

Claims (3)

[Claims] 1. One or more operating systems,
The operation system includes one or more work instruction systems, a plurality of operation process control systems, and a data transfer network interconnecting these systems. The operation system controls execution of operation functions of communication network components including a switch. And a work instruction system, the work instruction system includes a processing device, a memory, and an input / output device, and the operation process control system includes:
Means for comparing the processing load amount with a predetermined threshold using a processing device for controlling execution of work, a memory, and a table provided on the memory for sequentially storing the processing load amount of the processing device And when the operation is started from the operation system or the work instruction system, the operation process control system, if the processing load in the operation process control system is lower than the threshold value, the operation process control system. In the distributed control system, the operation is executed, and when the value is higher than the threshold value, the execution processing of the operation is entrusted to another operation process control system via the data transfer network. 2. One or more operating systems,
The operation system includes one or more work instruction systems, a plurality of operation process control systems, and a data transfer network interconnecting these systems. The operation system controls execution of operation functions of communication network components including a switch. And a work instruction system, the work instruction system includes a processing device, a memory, and an input / output device, and the operation process control system includes:
Means for comparing the processing load amount with a predetermined threshold using a processing device for controlling execution of work, a memory, and a table provided on the memory for sequentially storing the processing load amount of the processing device And a means for suspending and resuming a job being executed by using a table provided on the memory for storing the execution priority set in advance for the job, the operating system or the work instruction When the operation start command data is transmitted from the system, the operation process control system suspends the operation having a relatively low execution priority when the processing load amount in the operation process control system is higher than the threshold value, After that, if the processing load becomes lower than the threshold value, the suspended work should be restarted. And a distributed control system. 3. One or more operating systems,
The system includes one or more work instruction systems, a business activation command data distribution system, a plurality of operation process control systems, and a data transfer network interconnecting these systems, and the operation system includes a communication network including an exchange. The work instruction system has a processing device, a memory, and an input / output device, and the work activation instruction data distribution system includes a processing device and a memory. And a selection means for updating a table for sequentially storing the processing load amounts of the plurality of operation process control systems and selecting an operation process control system having the minimum processing load amount from the table. ,
When the business activation command data is transmitted from the operation system or the work instruction system, the business activation command data distribution system that receives the business activation command data selects the selection. After determining the operation process control system with the minimum processing load by means,
A distributed control system characterized by transmitting business start command data to the operation process control system.