JPH11143748A - File compression management device and file compression management method in computer system, and recording medium recording said method - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To realize a file management compression method and apparatus capable of improving the operation efficiency of a system by efficiently compressing a file. A file compression management method in a computer system for selectively compressing any one of a plurality of files stored in a file device, wherein a file whose area in the file device is larger than a predetermined area or a ratio of access is large. It is characterized by selecting and compressing files equal to or less than a predetermined file.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a file management compression method and apparatus in a computer system.

[0002]

2. Description of the Related Art In recent years, the capacity of file devices has been increased, and even small-scale computer systems are generally equipped with file devices of several tens of GB. For this reason, it is often considered that the file capacity required by the computer system is sufficient. However, recently marketed applications often have image data, and those requiring a capacity of several tens of MB to 200 MB or more have become common. So even if you think your computer system has enough file space,
As the system is expanded, the capacity often becomes insufficient.

Since the free space of a file device greatly affects the operation efficiency of a computer system, it is necessary to increase the free space of the file device in order to improve the operation efficiency. Even if it is thought that there is a capacity, the system often runs short if the free space becomes insufficient as the system is expanded. In such a case, the operation efficiency of the computer system is poor. For this reason, it has been conventionally performed to increase the free space of a file by compressing the file and to improve the operation efficiency of the system.

[0004]

As described above, it has been conventionally practiced to increase the free space and improve the operation efficiency of the system. However, file compression is generally performed on the entire file device. It is often said. Naturally, when operating a compressed file, it is necessary to decompress it. However, when the entire file device is compressed, decompression work is performed every time each application is operated, which takes time and reduces workability. There is a problem.

[0005] In addition, it is conceivable to compress a file by designating it. However, in this case, there is a problem that it is troublesome and troublesome to designate the file.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is directed to a file management compression method capable of improving the operation efficiency of a system by efficiently compressing files. And a device.

[0007]

A file compression management method in a computer system according to the present invention is a file compression management method in a computer system for selectively compressing any one of a plurality of files stored in a file device. And selecting and compressing a file whose area in the file device is larger than a predetermined value.

A file compression management method in a computer system according to another embodiment of the present invention is a file compression management method in a computer system for selectively compressing any one of a plurality of files stored in a file device. The file is compressed by selecting a file whose ratio is equal to or less than a predetermined value.

[0009] In any of the above cases, the file may be compressed at predetermined time intervals.

[0010] The recording medium of the present invention stores a program for causing a computer to execute any of the methods described above.

A file compression management device in a computer system according to the present invention is a file compression management device in a computer system for selectively compressing any one of a plurality of files stored in a file device. File reading means for reading the contents of each file and information about the file; file writing means for performing a writing operation for compressing the file in the file device; The system control unit that obtains the file information and controls the compression operation, and indicates the order of the files to be compressed, and the larger the value, the higher the compression stage in the order corresponding to each file in the file device. The described file management table and the file device A file usage rate indicating an occupancy rate of each of the plurality of files, an upper limit usage rate table in which a compression stage having a larger value as the file usage rate is described, and a usage rate of each file at predetermined time intervals are determined by the system. File control means for inquiring the control unit, reading out the compression stage stored in the upper limit use rate table corresponding to the file use rate of the query result, and outputting it together with the file name, and the description contents of the file management table. File management means for updating to the output content of the file usage monitoring means, reading out a predetermined number or more files in the compression stage, and notifying the file to the system control unit, wherein the system control unit operates the computer system. Waiting for completion, compressing the file notified from the file management means. To.

A file compression management device in a computer system according to another aspect of the present invention is a file compression management device in a computer system for selectively compressing any of a plurality of files stored in a file device, File reading means for reading information on the contents and files of each file in the file device;
A file writing unit for performing a writing operation for compressing a file in the file device, a system for obtaining file information in the file device via the file reading unit and the file writing unit, and controlling a compression operation Indicates the control unit and the order of files to be compressed,
The larger the value, the higher the compression stage, the file management table in which the file is described corresponding to each file in the file device, the file access ratio indicating the access ratio of each of the plurality of files in the file device, and the file access ratio. An upper-limit use rate table in which a compression step that becomes smaller as the value becomes higher is described, and an access rate of each file is inquired to the system controller every predetermined time, and the upper-limit use rate is corresponded to the file access rate as a result of the inquiry. File access rate monitoring means for reading out the compression stage stored in the table and outputting it together with the file name, and updating the description content of the file management table to the output content of the file access rate monitoring means, wherein the number of compression stages is equal to or less than a predetermined number. File to be read and notified to the system control unit It has a management unit, wherein the system control unit waits for the completion of the operation of a computer system,
The compression is performed on the file notified from the file management unit.

[Operation] A feature of the present invention is that a file (program group, data group) is stored in a computer system.
A file to be compressed is selected in a compression step, which is a plurality of threshold values, according to characteristics such as a usage rate and an access rate. It is characterized in that when a file exceeds a predetermined threshold value, at the end of system operation, the file is read out, compressed and written to expand the free file area.

Thereafter, the same processing is performed every time the file usage rate exceeds the threshold value. When the data is compressed and stored, the specifiable area increases, and a program using a large amount of data can be run, so that the operation efficiency of the system can be further improved.

When a compressed file is selected by paying attention to the usage rate, a larger free area can be secured.
When a compressed file is selected by paying attention to the access rate, a file having a high access rate, in other words, a frequently used file is not compressed, so that a smooth operation can be performed.

[0016]

Next, an embodiment of the present invention will be described with reference to the drawings.

[0017] First Embodiment FIG. 1 is a block diagram showing the system configuration of an embodiment of a computer system according to the present invention, and a main unit 100 and the file system 200.

The main unit 100 includes a system control unit 101 for controlling the entire system, a file reading unit 102, a file writing unit 103, a file compression unit 104, a file management unit 105, a file management table 106, and a file usage monitoring unit 107. , Upper limit usage rate table 10
And 8.

The file reading means 102 reads the contents of each file in the file device 200 and the storage state of the file in accordance with an instruction from the system control unit 101 and sends it to the system control unit 101.

The file writing means 103 writes a file into the file device 200 in accordance with an instruction from the system control unit 101, and writes a file in the file device 200 in accordance with an instruction from the file compression means 104. Do the work.

The file compression means 104 receives an instruction from the system control unit 101 and outputs a compression instruction to the file writing means 103.

FIG. 2 is a diagram showing the configuration of the file management table 106, in which file names and compression stages are described in correspondence. In this compression stage, the files to be compressed are ranked. In the example shown in FIG. 2, the larger the value, the higher the file to be compressed.

FIG. 3 is a diagram showing the configuration of the upper limit use rate table 108, in which the compression stages and the file use rates indicating the occupancy rates of the respective files in the file device 200 are described in correspondence. As shown in the figure, the higher the file usage rate, the larger the compression stage is described.

The file usage monitoring means 107 inquires the system controller 101 of the usage of each file at predetermined time intervals, and stores the compression stages stored in the upper limit usage table 108 corresponding to the file usage as a result of the inquiry. And reads the file management means 105 together with the file name.
Notify to

The file management means 105 compares the contents of the file management table 106 with the file usage rate monitoring means 10.
7, and outputs a file whose compression stage is equal to or larger than a predetermined value to the system control unit 101.

In a typical computer system,
When the operation is started, various files such as an application group and a data group are read from the file device 200 and executed on the main device 100. During execution, timely updated data and the like are written to the file device 200 by the file writing means 103. Operation is being carried out.

Normally, a computer system is designed to have a sufficient file capacity. However, in recent years, many applications that handle image data have been sold, and a large file area is required. It has become. For this reason, the file capacity of the computer system is often squeezed. During the operation of the system, a large amount of data is stored from outside the system or a new application is installed, so that the file usage rate of the file device 200 increases.

FIG. 4 is a flowchart showing a characteristic operation of the present embodiment. The operation of the present embodiment will be described below with reference to FIG.

Here, in this embodiment, the operation is performed as follows in addition to the normal operation.

The file usage monitoring means 107 inquires of the system controller 101 about the usage of each file, and obtains the current file usage of each file (step S).
1).

Subsequently, the file usage monitoring means 107
Reads the compression stage described in the upper-limit usage rate table 108 corresponding to the current file usage rate of each file obtained in step S1, and notifies the file management unit 105 of the compression level together with the file name (step S2). . Several compression stages are determined according to the size of the file usage.

The file management means 105 updates the compression stage described for each file in the file management table 106 to the notified compression stage (step S).
3). Thereafter, the files whose compression stage is equal to or more than a predetermined number are read out from the file management table 106 and notified to the system control unit 101. The system control unit 101 is notified by the file management unit 105 after the end of the operation. The file is read from the file device 200, compressed by the file compression means 104, and
0 is written (step S4).

Thereafter, it is determined whether a predetermined time has elapsed (step S5).
And the above operations are repeatedly performed. As a result, the compression work is performed periodically at predetermined time intervals.

In the present embodiment configured as described above, compression is preferentially performed on a file having a large used area in the file device 200, so that the free area can be efficiently expanded.

Next, a second embodiment of the present invention will be described with reference to the drawings.

Second Embodiment FIG. 5 shows a second embodiment of the computer system to which the present invention is applied.
FIG. 2 is a block diagram illustrating a system configuration according to an embodiment of the present invention.

In this embodiment, the file to be compressed is selected based on the file access rate, whereas the first embodiment shown in FIG. 1 selects the file to be compressed based on the file usage rate. Accordingly, the main unit 100, the system control unit 101, the file management unit 105, the file management table 106, the file usage monitoring unit 107, and the upper limit usage table 108 shown in FIG. , A system control unit 301, a file management unit 305, a file management table 306, a file access rate monitoring unit 307, and an upper limit access rate table 108. Other configurations are the same as those of the first embodiment shown in FIG. 1, and therefore, the same reference numerals as in FIG.

FIG. 6 shows the structure of the file management table 306. In the file management table 306, similarly to the file management table 106 in the first embodiment, a file name and a compression stage are described in association with each other.

FIG. 7 is a diagram showing the structure of the upper limit access ratio table 308, in which the compression stage and the file access ratio indicating the occupation ratio of the file in the file device 200 are described in correspondence. As shown in the figure, the higher the file access ratio, the lower the compression stage is described.

The file access rate monitoring means 307 checks the access rate of each file at predetermined time intervals.
01, and reads out the compression stage stored in the upper limit access rate table 308 corresponding to the file access rate as a result of the inquiry, and notifies the file management means 305 together with the file name.

The file management means 305 updates the description contents of the file access rate table 306 to the contents notified from the file access rate monitoring means 307, and outputs the result to the system control section 301.

FIG. 8 is a flowchart showing a characteristic operation of the present embodiment. The operation of the present embodiment will be described below with reference to FIG.

The file access rate monitoring means 307 inquires of the system control section 301 about the access rate of each file, and obtains the current file access rate of each file (step S31).

Subsequently, the file access rate monitoring means 30
7 is an upper limit access rate table 1 corresponding to the current file access rate of each file obtained in step S1.
The compression stage described in 08 is read out and notified to the file management means 305 together with the file name (step S32). Several compression stages are determined according to the level of the file access rate.

The file management means 305 updates the compression stage described for each file in the file management table 306 to the notified compression stage (step S).
33). Thereafter, the files whose compression stages are equal to or more than a predetermined number are read out from the file management table 306 and notified to the system control unit 301. The system control unit 301 waits for the end of the operation and is notified by the file management unit 305. The file is read from the file device 200, compressed by the file compression means 304, and
00 is written (step S34).

Thereafter, it is determined whether a predetermined time has elapsed (step S35).
Returning to 31, the above operations are repeatedly performed. As a result, the compression work is performed periodically at predetermined time intervals.

In this embodiment constructed as described above, compression is performed preferentially on files having a large access area in the file device 200, so that compressed files that need to be decompressed have less access.
Operation will be performed smoothly.

Each of the above-described embodiments is realized by a very general computer system including a storage device, a control device, an input device, and an output device. As for the operation of each unit, the input device receives an input from the device user and outputs it to the control device. The storage device performs a program including control, temporary storage of data accompanying the execution of the program, and the like, and is configured by, for example, a hard disk. The control device performs processing based on the program stored in the storage device with respect to the input content from the input device, and outputs the result to an output device such as a printer or a display device.

The program stored in the storage device is generally stored in a removable recording medium and stored via an input device, and the present invention also includes a recording medium.

[0050]

Since the present invention is configured as described above, it has the following effects.

When compression is performed in accordance with the ratio of each file in the file device, a larger free space can be secured, so that a large number of programs and the like that temporarily need a large-capacity work file are required. It is possible to drive efficiently, and there is an effect that the operation efficiency of the system can be dramatically improved.

When the file is compressed in accordance with the access ratio of the file, a file which can be operated even if the file is compressed is selected, so that the smooth operation can be performed while expanding the free space. There is.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a configuration of a file management table 106 in FIG.

FIG. 3 is a diagram showing a configuration of an upper limit use rate table 108 in FIG.

FIG. 4 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a second exemplary embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of a file management table 306 in FIG.

FIG. 7 is a diagram showing a configuration of an upper limit access rate table 308 in FIG. 5;

FIG. 8 is a flowchart showing the operation of the second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 100 main unit 101, 301 system control unit 102 file reading unit 103 file writing unit 104 file compression unit 105, 305 file management unit 106, 306 file management table 107 file usage monitoring unit 108 upper limit usage ratio table 307 file access ratio monitoring Means 308 Upper limit access rate table 200 File device S1 to S5, S31 to S35 Step

[Procedure amendment]

[Submission date] November 11, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

Patent application title: FILE COMPRESSION MANAGEMENT DEVICE AND FILE COMPRESSION MANAGEMENT METHOD IN COMPUTER SYSTEM AND RECORDING MEDIUM RECORDING THE METHOD

Claims (6)

[Claims] 1. A file compression management method in a computer system for selectively compressing any one of a plurality of files stored in a file device, wherein a file having an area larger than a predetermined area in the file device is selected and compressed. File compression management method in a computer system. 2. A file compression management method in a computer system for selectively compressing any one of a plurality of files stored in a file device, wherein a file accessed at a predetermined ratio or less is selected and compressed. A file compression management method in a computer system. 3. A file compression management method in a computer system according to claim 1, wherein the file compression is performed at predetermined time intervals. 4. A recording medium on which a program for causing a computer to execute the method according to claim 1 is recorded. 5. A file compression management device in a computer system for selectively compressing any one of a plurality of files stored in a file device, wherein contents of each file in the file device and information on the file are read. File reading means; file writing means for performing a writing operation for compressing a file in the file device; file information in the file device obtained through the file reading means and the file writing means; A file control table that indicates the order of the files to be compressed, and indicates the compression stage in which the higher the value, the higher the compression stage, corresponding to each file in the file device. File usage, which indicates the occupancy of each of multiple files on the device, and The upper limit usage rate table in which the compression stage that becomes larger as the file usage rate is described, and the usage rate of each file is inquired to the system control unit at predetermined time intervals, and the file usage rate corresponding to the query result is obtained. A file usage monitoring unit that reads out the compression stage stored in the upper limit usage ratio table and outputs the compression stage together with a file name; and updates the description content of the file management table to the output content of the file usage monitoring unit. File management means for reading out a predetermined number of files or more and notifying the system control unit, the system control unit waits for the end of the operation of the computer system, and A file compression management device in a computer system, which performs compression on a file. 6. A file compression management device in a computer system for selectively compressing any one of a plurality of files stored in a file device, wherein information on each file in the file device and information on the file are read. File reading means; file writing means for performing a writing operation for compressing a file in the file device; file information in the file device obtained through the file reading means and the file writing means; A file control table that indicates the order of the files to be compressed, and indicates the compression stage in which the higher the value, the higher the compression stage, corresponding to each file in the file device. File access indicating the access rate of each of multiple files on the device And an upper-limit use rate table in which a compression step in which the value becomes smaller as the file access rate becomes higher is described. The system control section is inquired about the access rate of each file at predetermined time intervals, and corresponds to the file access rate of the query result. File access rate monitoring means for reading out the compression stage stored in the upper limit usage rate table and outputting it together with the file name; updating the description content of the file management table to the output content of the file access rate monitoring means; File management means for reading out files whose number is equal to or less than a predetermined number and notifying the system control unit, wherein the system control unit is notified from the file management unit after the operation of the computer system ends. A computer system characterized by compressing files. File compression management device.