JPH0744481A - Computer system - Google Patents

Abstract

PURPOSE:To make the program development job efficient by utilizing a client computer not in use for a server. CONSTITUTION:A network environment having an accessible magnetic disk device 112 is used by plural client computers 13-1-13-n, and a tool start request file from a client computer, e.g. 13-1 stored in the magnetic disk device 112 is read and conducted by the tool server 13-n being other client computer. Thus, asynchronization processing is conducted without use of an exclusive server computer 11 by assigning one client computer not in use for a server. Thus, the other client computer conducts compiling and linking of a program to realize the parallel processing between the compile link processing and other programming.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a client / server model computer system including a server computer and a plurality of client computers that request the server computer to process various data via a network.

[0002]

2. Description of the Related Art In recent years, downsizing of information systems has progressed, and client / server model computer systems have been attracting attention. The client / server model is a system format that consists of multiple clients that perform user processing with a high-performance microprocessor and a server that handles data and processing shared by these clients. Compared with a system composed of terminals, it has the advantage of providing users with high performance and excellent interfaces.

Particularly, in a computer system for constructing a distributed processing system, a client / server model is often used in order to realize effective use of resources. In a typical distributed processing system that uses a client / server model, a computer such as a large computer or high-performance workstation is made to manage resources such as large-scale database files and printers, and other computers can refer to the database or print services. A processing form of requesting the computer to the computer is used. In this case, the computer that provides the file service or print service in response to the request becomes the server computer, and the workstation or computer that requests the service from the server computer by executing the application program of the office processing system that requires the database reference or print service. -The personal computer becomes the client computer.

In such a client-server model computer system, a series of processing requests (for example, database search, reference, update) from a client computer is called a transaction, and a program that processes the transaction. Online transaction processing (O
LTP) is realized.

However, in such a conventional client / server model computer system, even if there is an unused client computer, that client computer cannot be used as a server, so that the system performance is almost the same as that of the server computer. There is a drawback that is decided by.

Therefore, when the load on the server computer is large, the execution of the processing requested by the client computer is delayed and the system performance is degraded. Therefore,
Normally, the server computer is requested to process only specific tasks such as office work applications that use hardware resources such as databases and printers, and client computers are used for processes such as program development that do not use special hardware resources. The operation is performed such that everything is done in-house.

In the program development, it is necessary to carry out processing such as programming work, compilation and linking in the client computer. In this case, even if there is work that can be done asynchronously, for example, programming of one program and compilation of another program, since the operating system of the client computer is usually single-tasking, the work is done asynchronously. Can't be done.

The program size is small, and the
If the linking time is short, there is no problem, but if the program size becomes large or multiple programs need to be compiled, the process will take a considerable amount of time. In this case, the client computer cannot be used during that time, which causes a problem that the work efficiency of program development is reduced.

[0009]

[Problems to be Solved by the Invention]
In the server model computer, the processing of one client computer cannot be executed by another client computer, so even if there are processes that can be performed asynchronously, it is necessary to perform all of them on a specific client computer. To be done. For this reason, there is a drawback that work efficiency is lowered especially when a program is developed using a client computer.

The present invention has been made in view of the above circumstances, and it is possible to use one of client computers as a server and execute asynchronous processing without using a dedicated server computer. The object is to provide a server model computer system.

[0011]

Means and Actions for Solving the Problems
In a client-server model computer system including a server computer and a plurality of client computers connected to the server computer via a network and requesting the server computer to perform various data processes, the plurality of clients coupled to the network A shared memory accessible by a computer, in which a data processing request file from each of the client computers is stored, and a data processing request file stored in the shared memory in at least one of the plurality of client computers And a means for instructing execution of the data processing request file, wherein at least one of the plurality of client computers is configured to operate as a server computer for executing the data processing request file.

In this computer system, a network environment having a shared memory that can be accessed by a plurality of client computers is used, and a data processing request file from one client computer stored in the shared memory is shared by another client computer. Read and execute. Therefore, for example, by allocating one of the unused client computers as a server, it becomes possible to execute asynchronous processing without using a dedicated server computer. Therefore, when developing a program using a certain client computer, by having another client computer compile and link a certain program, programming work can be performed without waiting for the end of the compile and link processing. It becomes possible to continue.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a client / server model computer system according to an embodiment of the present invention. This computer system is for realizing an online transaction processing system (OLTP), and is a server computer 11 and a plurality of client computers 13-1 to 13-connected to the server computer 11 via a network 12. n.

The server computer 11 is a computer that provides various business services such as a file service, a print service, a FAX service, and the like, and performs business processing in response to requests from the client computers 13-1 to 13-n. I do. The server computer 11 comprises a computer main body 111 and a magnetic disk device 112. The magnetic disk device 112 is the client computer 13
-1 to 13-n is a shared memory accessible by the client computers 13-1 to 13-n.
A tool start request file storage area 201 and a tool execution result file storage area 202 are provided.

Each of the client computers 13-1 to 13-n is composed of a workstation, and here, the client computer 13-n is assigned as a tool server dedicated to tool execution. This tool server allocation is performed by installing the tool server program when the system of the client computer to be used as the server is started.

For example, when a program development work is performed using the client computer 13-1, if there is an unused client computer (here, the client computer 13-n), a tool from a floppy disk or the like is used for the computer. After the server program is installed and started up, the computer can be used as a tool server dedicated to tool execution.

Processing request from the client computer 13-1 to the tool server 13-n, and the tool server 13-n
The notification of the processing result from the n to the client computer 13-1 is performed by the magnetic disk device 112 which is a shared memory of them.
Is done using.

That is, the magnetic disk device 112 is provided with the tool start request file storage area 201 and the tool execution result file storage area 202 as described above, and the processing request to the tool server 13-n is made by the tool start request file. The storage area 201 is used to notify the client computer 13-1 of the processing result using the tool execution result file storage area 202.

Tool start request file storage area 201
Has a plurality of entries for accumulating and holding the tool activation request file and the control request file. The tool start request file is composed of information necessary for starting the tool, that is, a file identification ID, a user name, a name of a tool to be started such as a compiler, a file name such as a source program file name, and a file such as a source program. . The control request file is for instructing suspension, suspension, etc. of the requested tool execution.
It is composed of the file identification ID of the requested tool activation request file and the control information. This control information includes tool execution suspension, suspension, or monitoring (tool execution status monitoring).
Control type information indicating control contents such as is included.

Tool execution result file storage area 202
Has a plurality of entries for accumulating and holding the tool execution result file. The tool execution result file is
File identification ID of the corresponding tool start request file,
It is composed of an end time, a status indicating the current situation such as termination and progress, and a result file (interim result file).

The client computer 13-1 has a function of storing the tool start request file and the control request file in the magnetic disk device 112 of the server computer 11, and the tool execution result file stored by the tool server 13-n in the magnetic disk device 112. It has the function to obtain and interpret from.

On the other hand, the tool server 13-n acquires the tool start request file and the control request file from the magnetic disk device 112, interprets them, and executes the tool start and control, and the tool execution result as the tool execution result file. Has a function of storing in the magnetic disk device 112.

Next, referring to the flow chart of FIG.
The overall operation of the system of FIG. 1 will be described. The client computer 13-1 creates a tool start request file and a control request file in accordance with the requested tool start and control,
It is stored in the tool activation request file storage area 201 of the magnetic disk device 112. The tool server 13-n, which is in charge of executing the tool activation and controlling the processing, polls the tool activation request file storage area 201 of the magnetic disk device 112 at regular time intervals, and when the request file exists, polls it. Capture according to the flowchart of FIG.

That is, the tool server 13-n first refers to the tool activation request file storage area 201 to check whether the control request file from the client computer 13-1 exists (step S11), and the file exists. In that case, it is taken in, interpreted and executed (step S
14).

On the other hand, if the control request file does not exist, the tool server 13-n checks whether or not there is an unexamined tool activation request file (step S1).
2) If it exists, it is determined whether or not the tool activation request file corresponds to the tool execution function assigned to it (step S13), and if it corresponds, the file is fetched (step S13). Step S14).

That is, the tool to be executed by the program installed in the tool server 13-n is specified in advance, and only the tool start request file corresponding to the specified tool is fetched.

The loaded tool start request file is interpreted and executed, and when the execution is completed, the execution result is the magnetic disk device 112 as a tool execution result file.
The tool execution result file is stored in the storage area 202.

As described above, in the computer system of this embodiment, a plurality of client computers 13-1 to 13-1 are used.
A network environment having a magnetic disk device 112 accessible by 3-n is used, and a tool start request file from the client computer 13-1 stored in the magnetic disk device 112 is a tool server which is another client computer. 13-n read and executed. Therefore, for example, by allocating one of the unused client computers as a server, it becomes possible to execute asynchronous processing without using the dedicated server computer 11. Therefore, when a program is developed using a certain client computer, by compiling and linking a certain program on another client computer, programming work can be performed without waiting for the end of the process of compiling and linking. It becomes possible to continue.

Although only one client computer and one tool server are prepared for the sake of simplicity, a plurality of tool servers are prepared and a plurality of tool servers are used. It can also be configured to process a tool activation request file from the client computer.

Further, as the processing executed by the tool server, not only the compiler but also the client computers 13-1 to 13-3 as shown in FIG.
It is also possible to execute an office work application program by using the tool server 13-4 to 13-6 to execute a print processing request from the application program. In this case, the tool server 13-
It is also possible to install server programs having different tools to be executed in 4 to 13-6 and to classify into a tool server responsible for print processing and a tool server responsible for compilation processing.

Although an empty workstation is assigned as a tool server dedicated to tool execution here,
Each workstation, normally used as a client, can be configured to automatically act as a tool server when it detects its own idle state.

That is, in FIG. 2, the tool server 13-
Although it has been explained that n periodically polls the tool start request file storage area 201 and fetches the request file, as shown in the flowchart of FIG. 4, the tool server 13-n itself detects the idle state. However, the request file described in FIG. 2 may be automatically fetched and executed in response to the detection of the idle state (step S21). In this case, a workstation with a light load is automatically assigned as a tool server, and the work efficiency of the entire system can be improved.

[0033]

As described above, according to the present invention, the client computer can be used as a server,
Asynchronous processing can be executed without using a dedicated server computer.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a client / server model computer system according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an example of an operation of loading a tool activation request file from a shared memory provided in the computer system of the same embodiment.

FIG. 3 is a diagram showing an example of tool server allocation according to the embodiment.

FIG. 4 is a flowchart illustrating another example of an operation of loading a tool activation request file from a shared memory provided in the computer system of the same embodiment.

[Explanation of symbols]

11 ... Server computer, 12 ... Network, 13-1 to 13-1
13-n ... Client computer, 112 ... Magnetic disk device, 201 ... Tool start request file storage area, 20
2 ... Tool execution result file storage area.

Claims (2)

[Claims] 1. A client / server model computer system comprising a server computer and a plurality of client computers connected to the server computer via a network and requesting the server computer to perform various data processings. A shared memory that is accessible by the plurality of client computers and that stores a data processing request file from each of the client computers; and a shared memory that is stored in the shared memory in at least one of the plurality of client computers. And a means for instructing execution of the data processing request file, wherein at least one of the plurality of client computers is configured to operate as a server computer for executing the data processing request file. Computer system Mu. 2. A client / server model computer system including a server computer and a plurality of client computers connected to the server computer via a network and requesting the server computer to perform various data processings. And a shared memory accessible by the plurality of client computers, in which a data processing request file from each of the client computers is stored, wherein the plurality of client computers are in an idle state of the client computer. In response, the shared memory is accessed, and means for reading the data processing request file stored in the shared memory and means for executing the read data processing request file and writing the execution result in the shared memory are provided. The above Computer system, each of the client computer is characterized by being configured to operate as a server computer at the time of the idle state.