JPH06103123A - Secondary storage device allocating system - Google Patents

Abstract

PURPOSE:To improve the performance of the system by allocating an area by considering a classification of plural storage devices having each different performance, at the time of storing data from an application program. CONSTITUTION:From input/output designating information of an input/output processing program 60, input/output attribute information 81 is made. From performance ratio information 61 and the input/output attribute information 81 generated in advance by a classification a storage device of a secondary storage device 70 to be used, performance grade information 82 of each processing mode and each CI is made. From utilization degree grade information 62 obtained by converting to a numerical value in advance a degree of utilization of the secondary storage device 70 in each processing mode of a file to be handled and the performance grade information 82, a grade value is integrated in each use condition and application degree information 83 obtained by calculating a degree of application is maee. From device allocating information 63 obtained by setting in advance an allocation to the storage device by the degree of application and a retention period and the application degree information 83, the allocation of the storage device is determined.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a secondary storage device allocation system,
In particular, the present invention relates to a secondary storage device allocation method for an electronic computer system having a plurality of different secondary storage devices as areas for storing data handled by application programs.

[0002]

2. Description of the Related Art Conventionally, this type of secondary storage device allocation method has been used to store various data having different file attributes and processing modes from the input / output specification information of the application program, temporarily store data, or store permanently. Depending on the input / output attribute of the data to be stored, the usable area on all the secondary storage devices is set to the usable area on the secondary storage device in the case of various data, and the temporary used area on the secondary storage device is set to the temporary storage data. For the allocated area, in the case of permanent storage data, secure the area allocated to the permanently used area on the secondary storage device by the required area size obtained from the input / output specification information. The data is stored in the area.

[0003]

In the above-mentioned conventional secondary storage device allocation method, in determining the storage area of various data, temporary storage data, or permanent storage data, the characteristics of the data are used in any case. Since the target size is only secured without considering the file attributes, record length, number of processing, and read / write processing mode as described above, for example, if the number of processing is large and the number of input / output is large, The storage area is allocated to the slow access secondary storage device, which deteriorates the processing capacity, or the storage area for permanent storage data with a large number of record lengths and processed cases is allocated to the fast access secondary storage device. However, there is a drawback that the storage area of the data for which high-speed access is desirable cannot be used and the system performance is deteriorated.

[0004]

A secondary storage device allocation system of the present invention is a secondary storage device allocation system of an electronic computer system having a plurality of different secondary storage devices as areas for storing data handled by an operation business program. In the above, in the input / output information of the application program, analysis means for reading designation information of data to be temporarily or permanently stored and generating input / output attribute information, input / output attribute information obtained by this analysis means and this system A grade setting that generates performance grade information that normalizes the performance ratio by setting the maximum performance ratio to 1 for each processing mode and input / output processing unit for the file handled from the performance ratio information of each storage device provided Means, utilization grade information in which the degree of utilization for each processing mode for each processing mode is digitized with the maximum being 1, and the grade setting means A registration unit that multiplies the generated performance grade information by a grade value for each input / output attribute to generate applicability information that is a ratio of utilization effect between storage devices, and the applicability value and the storage device in advance. An evaluation unit that evaluates the device allocation information that sets the combination and the applicability value calculated by the registration unit to determine the allocation of the secondary storage device, and the secondary storage device that is determined by the evaluation unit. It is configured by having an input / output unit for inputting / outputting to / from.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.
In the embodiment shown in FIG. 1, the analysis means 10, the determination means 15, the setting means 20, the registration means 30, the evaluation means 40, the input / output means 50,
Input / output processing program 60, performance ratio information 61, usage grade information 62, device allocation information 63, device information 6
4, a secondary storage device 70, input / output attribute information 81, performance grade information 82, and applicability information 83.

The secondary storage device 70 has a low-speed access storage device composed of a magnetic disk device and a high-speed access storage device composed of an electronic disk device made of a semiconductor memory. The device information 64 is a table in which the characteristics of each storage device used in the secondary storage device 70 are registered, and FIG. 2 is a diagram showing an example of the contents of the device information 64. Device information 6
4, the device type name for each device identifier, as shown in FIG.
The storage capacity, average access time, data transfer rate, and temporary use area are recorded. The performance ratio information 61 is a table in which the performance ratios of the magnetic disk device and the electronic disk device used in the secondary storage device 70 are registered, and FIG. 3 is a diagram showing an example of the contents of the performance ratio information 61. The performance ratio information 61 is registered for the case of the index sequential file access shown in FIG. 3A and the case of the sequential file access shown in FIG. 3B, and the performance ratio information 61 is recorded for each control interval (CI) length. The performance multiples of the electronic disk device with respect to the disk device are shown. The utilization grade information 62 is a table in which preset grades for each processing mode for utilization are registered, and FIG. 4 is a diagram showing an example of the contents of the utilization grade information 62. The utilization grade information 62 is also registered for the case of the index sequential file access shown in FIG. 4A and the case of the sequential file access shown in FIG. 4B, and the highest utilization degree is obtained for each processing mode. In this case, the value is set as 1. The device allocation information 63 is a table in which the types of the secondary storage device 70 to be used are allocated according to the applicability and the retention period described later, and FIG. 5 is a diagram showing an example of the contents of the device allocation information 63. In this example, a storage device to be used is defined by a plurality of applicability threshold values and temporary use and storage period.

The analysis means 10 is an input / output processing program 60.
Input / output attribute information 81 is read to generate input / output attribute information 81. FIG. 2 shows input / output attribute information 81
In the figure showing an example of contents, information such as a file type to be handled, an access type, a processing unit (block size) for reading and writing, and a record format is managed as input / output attribute information.

The setting means 20 receives as input the input / output attribute information 81 generated by the analysis means 10 and the performance ratio information 61 that summarizes the performance ratios of various storage devices, and handles the files to be handled according to the processing mode (access type). Performance grade information 82 in which performance is normalized for each input / output processing unit (block size or CI length) with the highest performance ratio being 1.
To generate. In the content example of the performance ratio information 61 of FIG.
In the case of the index sequential file of (a), there are five types of processing modes: record insertion, record input, sequential input, sequential input update, and sequential input deletion, and the processing unit in each of them has the performance of the magnetic disk device. The performance ratio of the electronic disk device with a value of 1 is taken up. When the CI length is 4 KB, the processing performance by the electronic disk device is 11.1 in the record insertion process as compared with the magnetic disk device.
It shows that there is a performance improvement of 3.8 times in the double input processing. In the case of the sequential file of FIG. 3B, there are two types of processing modes, write and read, and the performance of the electronic disk device with the performance value of the magnetic disk device as 1 for each input / output processing unit. Ratio. When the CI length is 4 KB, it is shown that the processing performance by the electronic disk device is improved by 5.9 times in the writing process and 9.8 times by the reading process as compared with the magnetic disk device. The setting means 20 obtains the information of the file attribute, the processing mode (access type), and the processing unit from the input / output attribute information 81, and associates it with the performance ratio information 61 corresponding to the file attribute, and by the processing mode and the CI length. The normalized performance grade information 82 is calculated as the degree of the performance ratio. FIG. 7 is a diagram showing an example of the contents of the performance grade information 82. FIG. 7A is a diagram showing a normal value (grade value) with the best value being 1 for each processing mode, based on the value of the performance ratio obtained from the performance ratio information 61 in the case of index sequential file access. Is. FIG. 7B shows the performance ratio information 61.
It is the figure which calculated | required the normal value (Great value) which made the best value into 1 for every CI length based on the value of the performance ratio obtained from. Similarly, FIGS. 7 (c) and 7 (d) are diagrams showing normal values (grade values) obtained for each processing mode and CI length in the case of a sequential file.

The determination means 15 is the performance grade information 82 corresponding to the input / output attribute information 81 obtained by the analysis means 10.
Is determined, and if it is not generated, the setting means 20 is called. If it has been generated, the process proceeds to the registration means 30.

The registration means 30 uses the usage grade information 62 and the performance grade information 82 generated by the setting means 20 to obtain the grade values of the processing mode, the CI length, and the usage for each input / output usage condition. Applicability is calculated as a set group. The degree of applicability gives an indication of the criterion for obtaining the effect of using the electronic disk device with respect to the magnetic disk device with respect to the input / output use condition. The overall effectiveness is measured by multiplying the grade value for each use condition. . Figure 8
FIG. 8 is a diagram showing an example of the contents of the applicability information 83. As a usage condition by the program C of the input / output processing program 60, for example, the processing mode is read and the CI length is 4 KB.
(4096 bytes), if the usage frequency is high, the grade value for each usage condition is set as the performance grade information 8
When calculated from 2 and the usage grade information 62, 0.5
It becomes 08, 1.000 and 0.8. To obtain an overall effectiveness from these values, these values are multiplied, resulting in an applicability of 0.406. The input / output processing programs A and B are processed in the same manner, and the applicability of 0.8 and 0.035 is calculated.

The evaluation means 40 determines the usage conditions based on the applicability information 83 obtained by the registration means 30 and the device allocation information 63 which gives the allocation of the secondary storage device 70 to each main storage device according to the applicability. Ask for storage allocation. For example, the application condition is 0.406 under the use condition by the program C of the application information 83 in FIG. For the applicability of 0.406, when the applicability range is searched from the device allocation information 63 of FIG. 5 described above, 0.4 to 0.69.
It is in the range of 9. The evaluation means 40 classifies the electronic disk A according to the storage period including the temporary use and the permanent use, and the electronic disk A for the temporary use and the storage period within 9999 hours for the permanent use. Electronic disk A 1
If it is 0000 hours or more, the allocation of the storage device of the magnetic disk A or D is determined.

The input / output means 50 performs input / output processing using the storage device determined by the evaluation means 40, for example, an electronic disk device. Information on the storage device necessary for input / output is obtained from the device information 64.

[0014]

As described above, according to the present invention, the degree of effectiveness for each usage condition is calculated as a grade value from the input / output attributes and usage conditions handled by the application program, and the grade value is used to determine the overall effect. Since such an effect is obtained as the applicability and the optimum storage device is assigned, there is an effect that the input / output processing performance of the entire electronic computer system can be improved.

[Brief description of drawings]

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

FIG. 2 is a diagram showing an example of contents of device information in the embodiment of FIG.

FIG. 3 is a diagram showing an example of contents of performance ratio information in the embodiment of FIG.

FIG. 4 is a diagram showing an example of contents of usage grade information in the embodiment of FIG.

5 is a diagram showing an example of contents of device allocation information of the embodiment of FIG.

FIG. 6 is a diagram showing an example of contents of input / output attribute information in the embodiment of FIG.

FIG. 7 is a diagram showing an example of contents of performance grade information of the embodiment of FIG.

FIG. 8 is a diagram showing an example of contents of applicability information in the embodiment of FIG.

[Explanation of symbols]

 10 analysis means 15 determination means 20 setting means 30 registration means 40 evaluation means 50 input / output means 60 input / output processing program 61 performance ratio information 62 utilization grade information 63 device allocation information 64 device information 70 secondary storage device 81 input / output attribute information 82 Performance grade information 83 Applicability information

Claims (1)

[Claims] 1. In a secondary storage device allocation method of an electronic computer system having a plurality of different secondary storage devices as areas for storing data handled by an operation business program, temporary or permanent data is input from input / output information of an application business program. A file which is handled by an analysis means for reading the designation information of the data to be stored in the input / output attribute information and an input / output attribute information, and the input / output attribute information obtained by the analysis means and the performance ratio information of each storage device provided in this system. Grade setting means for generating performance grade information by normalizing the performance ratio with the maximum performance ratio being 1 for each processing mode and input / output processing unit, and the degree of usage for each processing mode for each file handled in advance. For each input / output attribute from the utilization grade information that is quantified with the highest being 1 and the performance grade information generated by the grade setting means. Registration means that multiplies the grade value of 1 to generate applicability information that is a reference ratio of utilization effects between storage devices, device allocation information that sets a combination of applicability value and storage device in advance, and the registration. And an input / output unit for inputting / outputting to / from the secondary storage device determined by the evaluation unit by evaluating the applicability value calculated by the means to determine allocation of the secondary storage device. A secondary storage allocation method characterized by the above.