JPH10124333A - System resource management device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the system resource management device which can improve the throughput of an operating system without including the generation time of an information area in a response time to a process request. SOLUTION: When the operating system 1 enters an idle state wherein a request is expected as to the operations of application programs 4-1 to 4-m, a table managing means 12 checks the use state of a resource information table 31, calculates the number of proper information areas by referring to a previously set use state rate, and sets the number in a management area 32. A table control means 11 refers to the management area 32 to increases the number of information areas and expand the resource information table 31 when the use state rate is exceeded, and decrease the number of information areas and reduce the resource information table 31 when not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system resource management apparatus and, more particularly, to a system for managing the number of information areas in a resource information table on a memory used for managing system resources.

[0002]

2. Description of the Related Art Conventionally, in an operating system for controlling a computer, various resources such as a memory, a file, a communication socket, and a peripheral device are managed, and these various resources are used when each application program (hereinafter, referred to as an application) is executed. Has the function to provide. In order to manage various resources, the operating system secures and uses a resource information table in which the usage status of each of the various resources is stored in a memory.

[0003] Each time a request for securing resources occurs in the operation of an application, unique information of each resource is set in an unused information area in the resource information table. The operating system manages resources based on the unique information.

There are two methods for creating the resource information table. In other words, a resource information table in which a fixed number of information areas are secured at the time of system organization is prepared in advance, and a resource information table is stored in a memory every time a resource request occurs in the operation of an application when the system actually operates. There is a method of making the number of information areas variable by performing allocation and expanding and reducing the resource information table.

[0005] In particular, as a method of changing the number of information areas by expanding and reducing the resource information table, a method of dynamically allocating resources according to system operation by referring to system log data as needed. There is. This method is disclosed in JP-A-62-204334.

[0006]

In the conventional resource management method described above, when a resource information table in which a fixed number of information areas are secured at the time of system organization is prepared in advance, securing resources in the operation of an application is required. If a request occurs more than the number of information areas in the resource information table set at the time of system organization, the operating system cannot perform resource management. Therefore, even if there are actual resources, the number of information areas in the resource information table Due to the shortage, resources cannot be allocated.

A resource information table is allocated on a memory every time a resource request occurs in the operation of an application.
In the case of a method in which the number of information areas is made variable by expanding and reducing the resource information table, the number of information areas in the resource information table is reviewed for each request generated on the operation of the application, and the allocation is reviewed when the number is insufficient. From that
There is no upper limit as in the above method.

However, the resource information table must be newly extended every time a resource reservation request is generated in the operation of the application. Therefore, the processing time for newly creating the information area of the resource information table is not sufficient for the operation of the application. Will be included in the response time of the processing request generated in.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a system resource management apparatus capable of improving the throughput of an operating system without including the time for creating an information area in the response time to a processing request. Is to do.

[0010]

According to the present invention, there is provided a system resource management apparatus for storing, in a predetermined information area on a memory, a use state of a system resource required by an application program operating on a system and including at least a peripheral device. A generation unit configured to generate a resource information table including a predetermined number of the information areas on the memory at the time of activation, wherein the generation unit is a system resource management device of an information processing system that executes the application program by setting the A checking unit for checking the use status of the resource information table in an idle state waiting for a request generated on the operation of the application program in the information processing system; and The information area And a management means for increasing or decreasing the number.

That is, according to the present invention, at the time of system startup, a resource information table having a predetermined number of information areas having a specified value is prepared in a memory. In addition, during operation, the operating system checks the usage status of the resource information table during idle time when a request for the operation of the application is waiting to occur, and refers to the usage status rate set in advance to the management area. The number of information areas in the resource information table is set appropriately.

By referring to the contents of this management area,
The resource information table is expanded when the usage status is equal to or higher than the usage status ratio, and the resource information table is reduced when the usage status is equal to or lower than the usage status ratio. It becomes possible to secure dynamically.

Here, the user sets in advance in the definition file the minimum number of information areas required for operating the system on the basis of the environment and operation form of the system for operating the operating system and the system configuration. deep. One size of each information area is determined for each function in the operating system that refers to the information area.

Therefore, in the system resource management system of the present invention, a plurality of information areas are prepared in advance by the operating system, and the information area prepared when a resource is requested from an application is used, so that a dynamic information area is prepared. Unlike the method for securing the information area, the processing time for securing the information area can be omitted. Therefore, processing can be performed without including the creation time of the information area in the response time, and the throughput of the operating system can be improved.

The number of information areas to be created on a finite memory can be reduced by allocating a shortage of information areas by utilizing the idle time of the operating system (the idle time waiting for a request to be generated). Because it can be managed in detail, the number of information areas can be adjusted according to the usage situation, and effective use of time is planned.
The memory occupied by the information area can be used efficiently.

[0016]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. In the figure, 1 is an operating system, 2-1 to 2-n are system resources, 3
Is a memory, 4-1 to 4-m are system resources 2-1 to 2-m
n (hereinafter referred to as an application).

The memory 3 has a resource information table 31 comprising information areas 31a to 31c for managing the system resources 2-1 to 2-n, and a management area 32 for managing the resource information table 31. . The operating system 1 includes a table control unit 11 for performing enlargement / reduction processing of the information management table 31 and a table management unit 12 for checking the use status of the information management table 31 and setting data in the management area 32. .

FIG. 2 is a flowchart showing the operation of one embodiment of the present invention. The operation of the embodiment of the present invention will be described with reference to FIGS.

As parameters of the operating system 1, an initial value of the number of the information areas 31a to 31c of the information management table 31 required and secured at the time of starting the system, and a usage rate which defines an upper limit of the usage status are included in the system file ( (Not shown) is set in advance, and the initial value and the usage rate can be variably set by changing the contents of the system file.

When the operating system 1 is started, the information areas 31a to 31a of the number of initial values set in advance are set.
A resource information table 31 including 31c is prepared in the memory 3 (step S1 in FIG. 2).

During the operation of the system, when the operating system 1 issues a request for allocating system resources 2-1 to 2-n by the operation of the applications 4-1 to 4-m (steps S2 and S8 in FIG. 2), the resource information table 31 One unused information area is assigned (step S9 in FIG. 2), and unique information of the system resources 2-1 to 2-n to be used is set (step S10 in FIG. 2).

The resource information table 31 is used until an instruction for releasing resources to the operating system 1 is issued by the operation of the applications 4-1 to 4-m. When using the system resources 2-1 to 2-n when the applications 4-1 to 4-m operate, the operating system 1 uses the application 4 based on the contents of the information areas 31a to 31c in the resource information table 31. Use in -1 to 4-m is allowed.

When a resource release request is issued to the operating system 1 by the operation of the applications 4-1 to 4-m (step S11 in FIG. 2), the operating system 1 executes the contents of the corresponding information areas 31a to 31c of the resource information table 31. Is cleared (step S1 in FIG. 2).
2), the assignment of the information areas 31a to 31c is released (step S13 in FIG. 2). In addition, the information areas 31a to 31
When all processes on the system are terminated by releasing the assignment of c (step S14 in FIG. 2), the operating system 1 terminates the processes.

When the operating system 1 is in an idle state waiting for the generation of a request in the operation of the application 4-1 to 4-m (step S2 in FIG. 2), the use state of the resource information table 31 is controlled by the table management means 12. Is checked (step S3 in FIG. 2), and an appropriate number of information areas is calculated with reference to the usage rate set in advance, and is set in the management area 32.

The table control means 11 refers to the management area 32 and, when the status is equal to or higher than the usage rate (step S2 in FIG. 2).
4, S5), the resource information table 31 is extended by increasing the number of information areas 31a to 31c (step S in FIG. 2).
6).

The table control means 11 refers to the management area 32 and, when the usage rate is equal to or lower than the usage rate (step S2 in FIG. 2).
4, S5), the resource information table 31 is reduced by reducing the number of the information areas 31a to 31c (step S in FIG. 2).
7).

Thus, by utilizing the idle state of the operating system 1, the number of information areas 31a to 31c in the resource information table 31 can be expanded or reduced to an appropriate number.

FIG. 3 is a block diagram showing a specific example of one embodiment of the present invention. In the figure, an example of open processing of the files 2-1 to 2-n in the magnetic disk device 2 is shown. In the figure, components corresponding to the components in FIG. 1 are denoted by the same reference numerals. That is, in FIG.
Is the operating system, 2 is the magnetic disk drive,
3 indicates a memory, and 4-1 to 4-m indicate applications.

The magnetic disk device 2 has files 2-1 to 2-n storing data, and the memory 3 has an information area 31 for managing the individual files 2-1 to 2-n.
a to 31d, and an optimal information area 31a to 31a in the file management table 31.
There is provided a usage status management area 32 for storing the number of 31d and the current usage status data.

The operating system 1 calculates the usage status rate by checking the usage status of the file management table 31 while the operating system 1 is idle, and the table control process 11 for executing the process of expanding and reducing the size of the file management table 31. And a table management process 12 for setting the result in the file management table status area 32.

FIG. 4 is a diagram showing the configuration of the file management table status area 32 of FIG. In the figure, the file management table status area 32 is the file management table 3
1 includes an information area number storage unit 32a for storing the optimum number of information areas 31a to 31d and a usage data storage unit 32b for storing current usage data.

The file resource management processing executed in the system having the above-described configuration will be described below with reference to FIGS.

As system parameters of the operating system 1, an initial value of the number of the information areas 31a to 31d required and secured at the time of system startup, and a usage rate which defines an upper limit of the usage status are system files (not shown). Is set in advance. An appropriate value to be set in the system file is determined based on the frequency of the user accessing the file in the present system, the number of files to be simultaneously opened, and the like.

The operating system 1 has an information area 31 for an initial value set in advance when the system is started.
A file management table 31 including the numbers a to 31d and a use status management area 32 are created and prepared in the memory 3.

When a request to open a file is generated by the operation of the application "A" 4-1, the operating system 1 uses the unused information area 31a of the file management table 31 to record information such as the name of the file to be opened. The application “A” 4-1 assigns the file “a” on the magnetic disk device 2
The related information (file a) indicating that 2-1 has been opened is set in the information area 31a of the file management table 31.

The operating system 1 recognizes that the file "a" 2-1 has been opened by the operation of the application "A" 4-1 based on the corresponding information set in the file management table 31, and the file open processing is completed. Response to application "A" 4-
Return to 1.

The information area 31a of the file management table 31 having the file open information of the application "A" 4-1 is occupied and opened until the application "A" 4-1 closes the file "a" 2-1. There is no.

When the application "A" 4-1 opens another file, the operating system 1 assigns different information areas 31b to 31d of the file management table 31 prepared in the same procedure.

When a processing request is not generated by the operation of the application "A" 4-1, the operating system 1 is usually in an idle state, which is a state of waiting for generation of a request.

The operating system 1 activates the table management process 11 using the idle time, and stores the information area 3 in the file management table 31.
The unused status of 1a to 31d is checked, and the usage status is calculated. File management table status area 3
2 is set in the usage data storage unit 32b, and the table control process 12 is started.

The activated table control process 12 refers to the file management table status area 32. At this time, the usage status of the information areas 31a to 31d exceeds the usage status rate set in advance, and the information areas 31a to 31d are used.
If the number 1d is insufficient, the number of information areas of the file management table 31 is newly created on the memory 3 and an unused number of information areas is secured by an optimum number.

On the other hand, if a large number of information areas in the file management table 31 are used and then released at once, an unused information area remains in the file management table 31 and the area of the memory 3 becomes unusable. It will be wasted as needed. In this case, as in the above, a process of opening the information area of the file management table 31 by an appropriate number by checking the usage rate and the current usage number by using the idle time of the operating system 1. I do. By this operation, the information area of the unused file management table 31 that is equal to or more than a certain value does not exist in the memory 3, and the memory 3 can be effectively used.

When the load on the operating system 1 is high, that is, when the idle state time does not occur, the number of file open requests generated by the operations of the applications 4-1 to 4-n decreases.
File management table 31 prepared when idle
If the number of information areas becomes larger than the number of information areas, and the information area becomes insufficient, the table control process 11 is started during the request processing, and only the shortage is dynamically secured from the memory 3 to prevent the processing from being stopped. .

As described above, the operating system 1
When the resource information table 31 of an appropriate size is prepared when the device is in the idle state, the time for creating the information area of the resource information table 31 can be processed without being included in the response time as in the related art, The throughput of the system 1 can be improved.
Further, the operating system 1 creates an information area of the resource information table 31 for the insufficient size and allocates the information area to the applications 4-1 to 4-m, so that the use of the finite memory 3 can be finely managed. The memory 3 can be used efficiently.

[0045]

As described above, according to the present invention, the use status of system resources required by an application program operating on a system and including at least peripheral devices is set in a predetermined information area on a memory. Thus, in the system resource management device of the information processing system that executes the application program, a resource information table having a predetermined number of the information areas is generated in the memory at the time of startup, and the application program of the application program is generated in the information processing system. Checking the usage status of the resource information table in the idle state waiting for an operation request, and processing the creation time of the information area by increasing or decreasing the number of information areas in the resource information table according to the check result When responding to a request Without including, there is an effect that it is possible to improve the throughput of the operating system.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing the operation of one embodiment of the present invention.

FIG. 3 is a block diagram showing a specific example of one embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a file management table status area in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operating system 2-1 to 2-n System resources 3 Memory 4-1 to 4-m Application program 11 Table control means 12 Table management means 31 Resource information tables 31a to 31c Information area 32 Management area

Claims (4)

[Claims] 1. An information processing system for executing an application program by setting a usage state of a system resource including at least a peripheral device in a predetermined information area on a memory, which is requested by an application program operating on the system. Generating means for generating, on the memory, a resource information table having a predetermined number of the information areas at the time of startup, and generating the resource information table on the operation of the application program in the information processing system. Checking means for checking the use status of the resource information table in an idle state waiting for a request, and managing means for increasing or decreasing the number of the information areas in the resource information table according to the check result of the checking means. The feature is that Stem resource management device. 2. The resource management system according to claim 2, wherein the management unit expands the resource information table by increasing the number of the information areas when a check result of the check unit is larger than a preset usage rate. 2. The system resource management device according to claim 1, wherein 3. The resource management system according to claim 2, wherein the management unit reduces the number of the information areas to reduce the resource information table when a check result of the check unit is smaller than a preset usage rate. 2. The system resource management device according to claim 1, wherein 4. The information processing apparatus according to claim 1, wherein the management unit detects that the check result of the check unit has become larger than the use rate in a situation in which the idle state is unlikely to occur in the information processing system. 4. The system resource management device according to claim 2, wherein the number of resources is increased to extend the resource information table.