JPH09269902A - Resource management apparatus for information processing apparatus and resource management method in information processing system - Google Patents

Abstract

(57) Abstract: An object of the present invention is to provide a resource management device and a resource management method for an information processing device that realizes appropriate and efficient resource management with simple control. SOLUTION: Each page frame constituting a main memory 30 is periodically cyclically scanned by a preset number, and a page frame that has not been accessed by a processor after the last scan is released and then sleeps. And a page-out daemon process 20 which is in a state. The page-out daemon process 20 is a resource management device used in an information processing system.
At a predetermined interval, means 13 for obtaining the number of empty page frames in the main memory 30, and the pageout daemon process 20 based on the obtained number of empty page frames at each dispatch time. Means 10 for setting the number of page frames to be scanned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resource management method and apparatus suitable for application to an information processing system that supports multitasking, and particularly when a program requests memory allocation exceeding the capacity of free memory. Information that realizes appropriate and efficient resource management by selecting a program in the system according to the criteria specified by the system administrator, releasing the memory allocated to the program, and continuing the execution of the program. The present invention relates to a resource management device in a processing device and a resource management method in an information processing system.

[0002]

2. Description of the Related Art In recent years, the spread of information processing devices has been remarkable, and the amount of information to be processed has been increasing. Along with the increase in the amount of information, various resource management methods for managing the allocation of the main memory and the secondary storage device have been developed.

Conventionally, even if, for example, a program with a relatively high priority newly requests allocation of main memory, if a shortage of main memory occurs, allocation failure is returned as a result. , Or by waiting for the program until it can be allocated. In particular, when the main memory runs short when the program is started, the program that issued the request has to be terminated.

Similarly, when a file is newly created or added, if a new file area allocation is requested on the disk and the file area becomes insufficient, allocation failure is returned as a result, or Alternatively, it was dealt with by waiting until it became available for allocation.

[0005]

As described above, the conventional problems are as follows. For example, when a program newly requests allocation of main memory and there is a shortage of main memory, either the allocation failure is returned as a result, or the program waits until allocation becomes possible. Since it was being dealt with, there was a problem that the less important program was using the main memory, so that the important program was kept waiting for a certain period of time or could not be started.

Similarly, when a file is newly created or added, if a new file area allocation request is made on the disk and a file area shortage occurs, allocation failure is returned as a result, or Alternatively, there is a problem that an important program is terminated on the way due to lack of a file storage area because it is dealt with by waiting until it becomes available for allocation. Therefore, the present invention has been made in consideration of the above circumstances, and provides a resource management device of an information processing device and a resource management method of an information processing system that realizes appropriate and efficient resource management with simple control. The purpose is to

[0007]

In order to achieve the above object, the present invention periodically scans a main memory and each page frame constituting the main memory by a preset number. A page-out daemon process that is in a sleep state after releasing a page frame that has not been accessed by the processor since the last scan, wherein the page-out daemon process is used. Means for dispatching at a predetermined interval, means for acquiring the number of empty page frames in the main memory, and pages that the pageout daemon process scans at each dispatch time based on the acquired number of empty page frames. Means for setting the number of frames, and a resource for an information processing device. The management apparatus.

According to the above arrangement, when the free space in the main memory becomes small due to an increase in the number of running programs, the number of page frames scanned by the pageout daemon process at each startup is set. On the other hand, if the free space in the main memory becomes large due to a decrease in the number of running programs, the pageout daemon process scans a small number of page frames at startup.

When activated, the page-out daemon process circulates and scans a predetermined number of page frames in the main memory, and at the time of this scanning, the page-out daemon process is provided corresponding to each page frame, for example. Clear the referenced flag that was set. This reference flag is set when the processor accesses the page frame. Therefore, the next time the page-out daemon process scans, a page frame whose reference flag is cleared will indicate that the processor has not been accessed during that time, so the page-out at that point The daemon process supports effective utilization of main memory by releasing this page frame.

That is, according to the resource management apparatus of the present invention, the rate at which the page-out daemon process scans the page frames in the main memory can be controlled according to the operating status of the system, and the free space in the main memory becomes tight. If there is a free space in the main memory, the collection of page frames can be promoted by shortening the period in which page frames can be held without being accessed by the processor. By avoiding excessive release of used page frames, flexible operation such as improving the processing performance of the entire system is realized.

[0011] In order to achieve the above object, the present invention provides
Memory release that selects one or more programs from the main memory and programs expanded in this main memory, releases the page frame in the main memory allocated to this selected program, and then goes to sleep A resource management device used in an information processing system including a program, wherein the means for acquiring the number of empty page frames in the main memory and the acquired number of empty page frames are below a predetermined value. sometimes,
And a means for setting the memory release program in an executable state.

According to the above configuration, when the number of empty page frames in the main memory falls below a predetermined value,
The program released in the main memory when the memory release program becomes executable and, for example, a shortage of page frames occurs when any process newly requests page frame allocation in the main memory. By selecting one or more programs from among the above, and releasing the page frame in the main memory allocated to the selected program, the execution of the program requesting the allocation of the page frame is continued.

This selection is performed based on, for example, the execution priority of each program and the number of updated page frames, and in some cases, the page frame allocated to the memory release program itself is released. Is desirable.

This makes it possible to avoid waiting for execution of an important program because a less important program exists in the system and uses the main memory, and more appropriate and efficient resource management can be performed. It

Further, by activating the memory release program as needed, when the main memory has a free space, it is possible to allocate other resources for its execution. By configuring this memory release program as an application program that operates in a privileged state under a basic program (OS: operating system), it is possible to easily incorporate a resource allocation rule, for example, and ensure extensibility. As a result, more flexible resource management can be realized.

Further, to achieve the above object, the present invention selects one or more files from a secondary storage device and files stored in this secondary storage device, and compresses the selected files. A resource management device used in an information processing system including a file compression program, and means for acquiring a free space in the secondary storage device,
A resource management device of an information processing device, further comprising: a unit that puts the file compression program into an executable state when the acquired free space is less than a first value.

Further, according to the above configuration, when the free space of the secondary storage device falls below the first value, the file compression program becomes executable, and the file stored in the secondary storage device is selected. Select one or more files,
By compressing the selected file, an empty area is generated, and a new file is created or added.

This selection can be made by, for example, prioritizing the oldest file having the latest reference date, prioritizing the backup file, and prioritizing the file that has not been updated. It is desirable to predict the size of the file to be selected from the capacity of the area and select it, or to give priority to the file having the size that is predicted to have the best compression efficiency for the compression algorithm. As described above, there are various criteria for selecting files to be compressed, and it is desirable that the system administrator can set the selection criteria according to the characteristics of the system. Further, if this compressed file is moved to another secondary storage device, more efficient resource management can be performed. Further, the file compression program may be provided with a means for expanding the compressed file, and the compressed file may be expanded by the file compression program when the free space of the secondary storage device exceeds the second value. The response time when accessing the file can be greatly shortened, and the processing efficiency of the entire system can be further improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a functional block diagram showing a schematic configuration of a resource management device according to a first embodiment of the present invention.

The resource management system of this embodiment is totally controlled by the operating system 10.
In the operating system 10, the interval timer 11 generates an interrupt at a predetermined interval, the clock processing routine 16 is activated by this interrupt, and the clock processing routine 16 activates the pageout daemon process 20 each time.

This page-out daemon process 20
When it is activated, the page frame table 29 showing the state of each page frame in the main memory 30 is circulated by a preset number (when the last page frame is reached, the page frame table 29 is returned to the first page frame. Scanning sequentially. At this time, reference bits (reference bi) provided corresponding to each page frame are provided.
t) is checked, and if the reference bit is set (1), this reference bit is cleared (0).

The reference bit is set when the processor (not shown) accesses the page frame, and therefore, when the reference bit is checked, the reference bit is cleared. If there is, it means that the access by the processor has not been made since the last scan (the period during which the pageout daemon process 20 scans once). Therefore, in this case, the page-out daemon process 20 releases this page frame. As a result, page frames that have not been accessed for a predetermined interval or longer do not continue to exist in the main memory 30, and effective use of the main memory 30 is realized.

The main memory management unit 12 of this embodiment is
The number of used page frames and the number of empty page frames of the main memory 30 are written in the memory management information 13. Then, the page-out daemon process 20 determines the number of page frames to scan based on the information about the main memory 30 acquired from the memory management information 13. Then, the page-out daemon process 20 sleeps until a next interval timer interrupt occurs after scanning the predetermined number of page frames. Also,
Alternatively, the main memory management unit 12 may determine the number of page frames to scan and pass that value to the pageout daemon process 20.

When the amount of free memory in the main memory 30 is small, the scan rate of the pageout daemon process 20 is changed by setting the number of page frames scanned by the pageout daemon process 20 at one start-up to change the main memory 30. In the meantime, when the page frame collection is actively performed, and when the free memory amount of the main memory 30 has a margin, the page out daemon process 20 scans the number of page frames at one start-up to reduce the number of used page frames. Improves overall system throughput by avoiding excessive recovery of

As a result, appropriate and efficient resource management according to the operating status of the system can be performed. Note that the same effect can be obtained by adjusting the frequency with which the clock processing routine 16 activates the pageout daemon 20 instead of changing the number of scan page frames of the pageout daemon process 20, which is effective. Is.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. 2 is the second
It is a functional block diagram which shows the schematic structure of the resource management apparatus which concerns on embodiment.

The resource management apparatus of this embodiment is wholly controlled by an operating system 10, and this operating system 10 manages memory management information 13 and process management information 14. Then, when the amount of free memory managed by the memory management information 13 falls below a predetermined value, the operating system 10 puts the main memory release process 40 into an executable state (schedule waiting state).

The main memory release process 40 operates by referring to the memory management information 13 and the process management information 14 managed by the operating system 10. As shown in FIG. 2, the main memory releasing process 40 first executes a free space shortage waiting step 41. In this step, the free space shortage system call 10a in the operating system 10 is called, and the sleep of this process is requested until the shortage of free space in the main memory 30 occurs.

It is assumed that any program newly requests the allocation of the main memory 30, and there is no free area corresponding to the request, that is, the memory shortage occurs. At this time, the operating system 10 sets the main memory release process 40 in the sleep state to the executable state. Eventually, the main memory release process 40, which has become the executable state, executes the process management information 1 in the target process selection step 42.
4, a process with a low priority is selected, for example. Then, the memory releasing step 43 releases the memory allocated to this process. As a means for releasing this, the process may be aborted or swapped out. Then, by this release, the memory shortage is resolved, and the requesting process is allocated and the processing is continued.

Thus, for example, since there is a process with a low priority, there is no inconvenience that the process with a high priority is not executed for a long time, and proper resource management is performed.

In addition, for example, when a process which is regularly activated is resident, it is effective to select a process having a long time until the next execution time instead of the priority. Yes, it is also effective to select a batch process that does not have an end time specified, and it is also effective to select a process with a small updated memory in consideration of the processing when releasing the memory. Is. These can be realized by the information management method in the process management information 14. Further, it may be effective in some cases to release the memory allocated to the main memory releasing process 40 itself.

The main memory release process 40 is activated only when the free space of the main memory 30 falls below a predetermined value. No overhead is generated. In addition, the operating system 10
Since it is constructed as an application program which operates in a special mode under the control of, the resource management rule of the main memory 30 can be added and changed only by rewriting this application program, and its expandability can be secured.

FIG. 3 shows an operation procedure of the resource management system of this embodiment. In the resource management device of this embodiment,
First, a menu screen for setting the resource management rule of the main memory 30 is displayed (step A1). On this screen, for example, as shown in FIG. 4A, a list of processing methods when the main memory is insufficient is displayed, and the system administrator is prompted to make a selection. Then, the system administrator inputs the number of the desired processing method from the presented processing methods in the field 51 indicated by the prompt (step A2).
FIG. 4B shows the selection result of the system administrator. In this case, processing method 2, processing method 1, processing method 4 are shown.
In this order, the process that should release the memory will be determined.

When this input is made, the resource management device carries out preprocessing of the designated processing method, and prepares the main memory release process 40 to operate according to the designated processing method (step A3). .

Thereafter, the main memory release process 40
A free space wait state is set (step A4). When the free space of the main memory 30 falls below a predetermined value, the operating system 10 puts the main memory release process 40 into the execution state, and the main memory release process 40 selects the target process (step A
5) The main memory is released (step A6). These steps A4 to A6 are executed by the operating system 10 by the main memory release process 40.
Is repeated until an instruction to end is given.

In the target process selection step of step A5, the field 51 of FIG. 4B is used.
Each processing method will be adopted according to the priority specified in. That is, field 5 shown in FIG. 4B.
In 1, the numbers are designated in the order of 2, 1, and 4, for example. For this reason, first, if there is a process corresponding to “2”, the process is selected, and if not, if there is a process corresponding to “1”, the process is selected. Then, the main memory in use by the selected process is released.

Next, the operation principle of the resource management device is shown in FIG.
This will be described with reference to FIG. Now, the main memory 30 is shown in FIG.
Are assigned as shown on the left side of. Here, if the application program A newly requests allocation of the main memory 30 that exceeds the free space, the main memory release process 40 forcibly uses the memory used by the application program B having the lowest priority. release. Then, the released memory area is allocated to the application program A, and the execution of the application program A having a high priority is continued as shown on the right side of FIG.

As a result, appropriate resource management is realized. (Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS.

FIG. 6 is a functional block diagram showing a schematic configuration of the resource management device according to the third embodiment. The resource management apparatus of this embodiment is entirely controlled by an operating system 10, and this operating system 10 manages file management information 15. Then, the operating system 10 enables the file compression process 60 when the free area of the disk 70 managed by the file management information 15 falls below a predetermined value.

The file compression process 60 is performed by the file management information 1 managed by the operating system 10.
Refer to 5 to operate. File compression process 60
As shown in FIG.
1. File selection step 62 and file compression step 63. First, wait 61 for free space shortage
Calls the operating system 10 and sleeps until a state where the free space of the disk 70 is insufficient appears.

Now, it is newly requested to newly create or add one of the files, and as a result of responding to this request, the remaining free area falls below the limit value, and there is no free area corresponding to the file. Suppose you run out of space. At this time, the operating system 10
Dispatch the file compression process 60, refer to the file management information 15 in the file selection step 62,
For example, select the file with the oldest reference date. Then, in a file compression step 63, the file is compressed. Therefore, when the file area shortage is resolved by this compression, the requested file is newly created or added and the processing is continued.

As a result, more efficient resource management can be performed. It is also effective to select a file that exists as a backup, for example. These can be realized by the method of managing the information in the file management information 15. Further, for example, by predicting the size of the file to be compressed from the size of the file area that must be extracted, and selecting a file close to that size, or having a size or type that is predicted to have higher compression efficiency. Selecting a file is also effective. For example, MPEG format or JP
It can be predicted that the compression efficiency of the document file is higher than that of the EG format file.

This file compression process 60 also
Since the disk 70 is activated when the free space of the disk 70 falls below a predetermined value, unnecessary overhead does not occur when the free space of the disk 70 has a margin. Further, since it is constructed as an application program that operates under the control of the operating system 10, the resource management rule of the disk 70 can be added and changed only by rewriting this application program, and its expandability can be secured.

FIG. 7 shows an operation procedure of the resource management system of this embodiment. In the resource management device of this embodiment,
First, a menu screen for setting the resource management rule of the disk 70 is displayed (step B1). On this screen, similar to the list display shown in FIG. 4A, for example, a list of processing methods when the free space of the disk 70 is insufficient is displayed,
Prompt system administrator for selection. Then, the system administrator inputs the number of the desired processing method from the presented processing methods in the field indicated by the prompt (step B2).

When this input is made, the resource management device carries out preprocessing of the designated processing method, and prepares the file compression process 60 to operate with the designated processing method (step B3).

After that, the file compression process 60 enters a waiting state for free space (step B4). Disk 70
When the free space of the file is less than a predetermined value, the operating system 10 activates the file compression process 60, and the file compression process 60 selects the file (step B5) and compresses the file (step A6). Become. These steps B4 ~
B6 is repeated until the operating system 10 issues an instruction to terminate the main memory release process 40.

In the file selection step of step B5, each processing method is adopted according to the priority designated in the field on the menu screen, as in the case of the second embodiment. Examples of one of the plurality of processing methods in the present embodiment include “select the oldest file with an update date” and “select backup files with priority”.
Selection of each processing method is performed by the procedure as described in the second embodiment. Then, the selected file is the target of compression.

Here, the operation principle of this embodiment will be described with reference to FIG. Now, it is assumed that the disk 70 is allocated as shown on the left side of FIG. Here, if the file A newly requests allocation of a disk that exceeds the free space, the file compression process 60 uses a predetermined processing method (of a plurality of processing methods input in the field on the menu screen). For example, the file B is selected and compressed by the method of selecting the oldest file with the update date. As a result, the file area released is allocated as an additional portion of the file A, as shown in FIG.
The execution will continue as shown on the right side of.

As a result, appropriate resource management is performed. Further, as shown in FIG. 9, for example, a file existing as a backup (extension “.b
If there are files to which "ak" is added), more appropriate resource management can be realized by preferentially selecting these files.

Further, as shown in FIG. 10, for example, by selecting a file whose free space that is uncompressed as a result of compression processing is closest to the file capacity that must be uncompressed, compression is performed. C spent
PU time can be saved.

In the flow chart of FIG. 7, the file is selected and compressed when the free space of the file falls below a predetermined value (first value). Free space is a predetermined value (second value)
The file may be selected / decompressed when the file is recovered up to. The operation procedure in this case is shown in FIG. 11A and FIG.
1B will be described. 11A relates to file compression processing, and FIG. 11B relates to file decompression.

First, the procedure of file compression processing will be described. Now, with reference to the file management information 15 in the operating system 10, the disk 7
The file free area amount within 0 is monitored (step C1). Then, it is determined whether or not the amount of free space obtained from the file management information 15 is smaller than a predetermined value L1 (step C2). If it is not smaller than L1, file compression processing is not performed. If it is smaller than L1, the operating system 10 determines that the file compression process 60
Dispatch. As a result, the file compression process 60 selects a file to be compressed based on the processing method determined in the above procedure (step C).
3). Next, the selected file is compressed (step C4).

Next, the procedure of file decompression processing will be described. As in the case above, the operating system 10
The file free area amount in the disk 70 is monitored by referring to the file management information 15 (step D1). Then, it is determined whether or not the amount of free area obtained from the file management information 15 is larger than a predetermined value L2 (step D2). If it is larger than L2, the file expansion process is not performed, and if it is larger than L2, the operating system 10 dispatches a file expansion process (not shown). Thereby, in the file decompression process, the file to be decompressed is selected based on the predetermined processing method (step D).
3). Next, the selected file is expanded (step D4).

By incorporating the decompression processing in this way, it is possible to efficiently access the file when the file capacity has a margin. In the above-described embodiment, the file compression program waits until the file area runs short in the free area shortage step, but the same applies to the file decompression process in the operating system as another method. Further, the file compression program may be started when the lack of the file area is detected.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 12 is a functional block diagram showing a schematic configuration of the resource management device according to the fourth embodiment.

The resource management system of this embodiment has a configuration in which the file compression process 60 further includes a link creation section 64 and a file migration section 65 in addition to the configuration of the resource management system of the third embodiment. .

In the file compression process 60 of this embodiment, for example, the disk 7 selected by the file selection unit 62 is selected.
When the file compressing unit 63 compresses the file 0a, the file moving unit 65 copies the compressed file to the disk 70.
The disk is moved from a to the disk 70b which is a sub disk, and the link creating unit 64 creates this link information and stores it in the source of the disk 70a. As a result, the disk 70a, which is the main disk, is more appropriately resource-managed.

[0058]

As described in detail above, according to the present invention, the cycle in which the pageout daemon process scans the main memory is controlled according to the operating status of the system, so that appropriate and efficient resource management is realized. To be done.

When an area shortage occurs in the main memory, an appropriate program is selected and the page frame in the main memory allocated to this program is released, so that, for example, a program that is not so important can be stored in the system. It avoids that an important program cannot be executed because it exists in.

Further, even when an area shortage occurs in the disk device, an appropriate file is selected and this file is compressed to generate an empty area. This realizes more efficient resource management.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing a schematic configuration of a resource management device according to a first embodiment of the present invention.

FIG. 2 is a functional block diagram showing a schematic configuration of a resource management device according to the same embodiment.

FIG. 3 is a flowchart illustrating an operation procedure of the resource management device according to the second embodiment of the present invention.

FIG. 4 is an exemplary view showing a screen display for allowing a system administrator to select a processing method when the main memory of the resource management device according to the embodiment is insufficient.

FIG. 5 is a conceptual diagram illustrating an operation principle of the resource management device according to the embodiment.

FIG. 6 is a functional block diagram showing a schematic configuration of a resource management device according to a third embodiment of the present invention.

FIG. 7 is a flowchart illustrating an operation procedure of the resource management device according to the embodiment.

FIG. 8 is a conceptual diagram illustrating an operation principle of the resource management device according to the embodiment.

FIG. 9 is a conceptual diagram illustrating an operation principle of the resource management device according to the same embodiment.

FIG. 10 is a conceptual diagram illustrating an operation principle of the resource management device according to the embodiment.

FIG. 11 is a flowchart illustrating an operation procedure of the resource management device according to the embodiment.

FIG. 12 is a functional block diagram showing a schematic configuration of a resource management device according to a fourth embodiment of the present invention.

[Explanation of symbols]

10 ... Operating system, 12 ... Main memory management unit, 13 ... Memory management information, 20 ... Page out daemon process, 29 ... Page frame table, 30
… Main memory, 40… Main memory release process, 6
0 ... File compression process, 70 ... Disk.

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[Procedure amendment]

[Submission date] October 22, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

Claims (21)

[Claims] 1. A main memory and page frames constituting this main memory are periodically scanned by scanning a preset number of times, and page frames which have not been accessed by a processor since the last scanning are scanned. A resource management device used in an information processing system including a page-out daemon process that is in a sleep state after being released, and means for dispatching the page-out daemon process at a predetermined interval; And a means for setting the number of page frames to be scanned by the page-out daemon process at each dispatch time based on the acquired number of empty page frames. Resource management device for information processing device. 2. The information processing apparatus according to claim 1, wherein the setting means has means for setting a larger number of page frames scanned by the previous pageout daemon process as the number of empty page frames decreases. Resource management device. 3. The resource management apparatus for an information processing apparatus according to claim 1, wherein the setting means has means for shortening the interval for dispatching the pageout daemon process as the number of empty page frames decreases. 4. A main memory and one or more programs selected from programs expanded in the main memory are selected, a page frame in the main memory allocated to the selected program is released, and then a sleep is performed. A resource management device for use in an information processing system comprising a memory release program in a state, wherein the means for acquiring the number of empty page frames in the main memory, and the acquired number of empty page frames are predetermined. A resource management device for an information processing device, comprising means for setting the memory release program to an executable state when the value is below the value. 5. The memory release program has means for preferentially selecting a program having a long time until the next execution time from programs expanded in the main memory. Resource management device for information processing device. 6. The information processing apparatus according to claim 4, wherein the memory release program has means for preferentially selecting a program having a low execution priority from among the programs loaded in the main memory. Resource management device. 7. The memory release program has means for preferentially selecting a program having a small number of updated page frames among programs expanded in the main memory. Resource management device for information processing device. 8. The resource management device for an information processing apparatus according to claim 4, wherein the memory release program has a unit for releasing a page frame assigned to the own program. 9. The memory release program has two or more criteria for selecting a program to be released from the memory expanded from the main memory, and the user selects the criteria. The resource management device of the information processing device according to claim 4, further comprising means. 10. An information processing system comprising: a secondary storage device; and a file compression program for selecting one or more files from files stored in the secondary storage device and compressing the selected files. A resource management device used, a means for acquiring the free space in the secondary storage device, and a state in which the file compression program can be executed when the acquired free space is less than a first value. 5. The resource management device for an information processing device according to claim 4, further comprising: 11. A secondary storage device different from the secondary storage device, a means for moving a selected and compressed file into the other secondary storage device, a storage location of a migration source and a migration destination of the file. 11. The resource management device of the information processing device according to claim 10, further comprising: means for creating link information with the storage position of and storing the link information in the storage position of the movement source. 12. The information processing apparatus according to claim 10, wherein the file compression program has means for preferentially selecting a file having an old reference date from files stored in the secondary storage device. Resource management device. 13. The resource management device for an information processing apparatus according to claim 10, wherein the file compression program has means for preferentially selecting a backup file from files stored in the secondary storage device. . 14. The information processing apparatus according to claim 10, wherein the file compression program has means for preferentially selecting a file that has not been updated from files stored in the secondary storage device. Resource management device. 15. The file compression program has means for making selection based on the size of each file stored in the secondary storage device.
A resource management device of the information processing device described. 16. A file compression program has two or more criteria for selecting a file to be compressed from files expanded in a secondary storage device, and means for a user to select the criteria. The resource management device for an information processing device according to claim 10, further comprising: 17. The resource management device for an information processing apparatus according to claim 10, wherein the file compression program has means for decompressing the compressed file. 18. The information processing system according to claim 17, further comprising means for causing the decompression means to decompress the compressed file when the free space in the secondary storage device exceeds the second value. Device resource management device. 19. The main memory and each page frame in the main memory are circulated and scanned by a preset number, and after releasing page frames that have not been accessed by the processor since the last scan, A resource management method in an information processing system including a page-out daemon process that is in a sleep state, wherein the number of empty page frames in the main memory is acquired, and the page is acquired based on the acquired number of empty page frames. A resource management method in an information processing system, wherein the number of page frames to be scanned by the out-daemon process is set at each dispatch. 20. A main memory and one or more programs selected from programs expanded in the main memory are selected, a page frame in the main memory allocated to the selected program is released, and then sleep is performed. A method for managing resources in an information processing system, comprising: a memory release program in a state, wherein the number of empty page frames in the main memory is acquired, and the acquired number of empty page frames is less than a predetermined number of page frames. A resource management method in an information processing system, wherein the memory release program is set to an executable state during 21. An information processing system comprising: a secondary storage device; and a file compression program for selecting one or more files from files stored in the secondary storage device and compressing the selected files. In the resource management method according to the first aspect, the free space in the secondary storage device is acquired, and when the acquired free space is below a predetermined value, the file compression program is set to an executable state. A resource management method in an information processing system characterized by the above.