JPH03189720A - Method and device for designing system disk of electronic computer - Google Patents

Abstract

PURPOSE:To enable even an amateur to design a system disk by referring to the task-based input/output load knowledge, the disk type-based specification knowledge, and the system file allocation designing model knowledge. CONSTITUTION:A system disk unit number designing means 2 refers to the task-based input/output load knowledge 5 and the disk type-based specification knowledge 6 stored in an external storage device 4 and calculates the necessary number of system disks. A system file allocation designing means 3 refers to the system file allocation designing model knowledge 8 corresponding to the number of disks stored in an external storage device 7 and produces an allocation plan of a system file. Thus a system disk designing task is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to system generation for electronic computers, and particularly to a system disk design method and apparatus.

[Conventional technology]

Traditionally, when designing a system disk for a computer, some system generation experts based on the computer's business/performance (throughput) goals and the specifications of the system disk that makes up the computer, such as its capacity and capacity. This has been done manually based on experience, based on a huge amount of information, such as information on individual system files that make up the system disk, and sometimes with some of this information missing.

[Problem to be solved by the invention]

The above-described conventional method of designing a system disk for an electronic computer requires considerable skill, so there is a problem in that the range of qualifications of a designer is limited.

Furthermore, even for some system generation experts, it takes considerable effort (time) to systematically organize and process vast amounts of information.
Because of this, there is a problem in that the design relies on experience to a certain extent, which sometimes results in a lack of accuracy.

[Means to solve the problem]

The system disk design method for a computer according to the present invention includes knowledge of the input/output load for each job with respect to the workload and performance goals of the computer user, and knowledge of the specifications for each disk type such as the capacity and capacity of the system disk that constitutes the computer. In addition, the system file layout design model knowledge corresponding to the number of system disks is provided in the external storage device, and the system disks required for the computer are referenced by the input/output load knowledge by business and the specification knowledge by disk type. Based on the calculated required number of system disks, refer to the system file layout design model knowledge to properly layout and design the system files that make up the system disk, and obtain the result. The present invention is characterized in that the design proposal is presented to the computer user via an input/output device or an output device.

Further, the configuration of the system disk design device for a computer according to the present invention includes knowledge of the input/output load by business with respect to the business volume and performance goals of the computer user, and the disk type such as the ability and capacity of the system disk constituting the computer. The external storage device is equipped with separate specification knowledge and system file layout design model knowledge corresponding to the number of system disks, and by referring to the input/output load knowledge by business and specification knowledge by disk type, means for designing and calculating the number of system disks to be installed, and referring to the system file layout design model knowledge based on the calculated required number of system disks to appropriately layout and design the system files that constitute the system disk. The present invention is characterized by comprising means and means for controlling these two means and presenting the resulting design proposal to the user via an input/output device or an output device.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

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

In Figure 1, 1 is a system disk design/edit output means;
2 is system disk number design means, 3 is system file layout design means, 4 and 7 are external storage devices, 5 is input/output load knowledge by business, 6 is specification knowledge by disk type,
8 is system file layout design model knowledge, 9 is an input/output device, and 10 is an output device.

When the system disk design/edit output means 1 is activated by the input/output device 9, the system disk design/edit output means 1, when being activated by the input/output device 9, tells the user what kind of work the computer wants to perform and at what level of performance when designing a system disk. In addition, we will ask you about your business performance goals, such as what type of system disk you would like to install, using a menu.

The system disk design/edit output means 1 activates the system disk number design means 2 based on the result of this inquiry. The system disk number design means 2 compares the input/output load knowledge 5 by business and the specification knowledge 6 by disk type, which are stored in the external storage device 4 in advance, against the user's business performance target, and The required number of disks is calculated and returned to the system disk design/edit output means 1.

Further, the system disk design/edit output means 1 uses the system file arrangement design means 3 based on the required number of system disks calculated by the system disk number design means 2.
Start. The system file layout design means 3 compares the required number of system disks with the system file layout design model knowledge 8 corresponding to the number of system disks, which is stored in advance in the external storage device 7, to design the system files. Create a layout plan.

However, this system file placement plan does not take into consideration the input/output load and capacity for each disk, which corresponds to the user's business performance goals. File relocation is performed as necessary. The system file arrangement plan created in this way is returned to the system disk design/edit output means 1.

The system disk design/edit output means 1 summarizes the system disk design plan based on the execution results of the system disk number design means 2 and the system file layout design means 3, and outputs it to the input/output device 9 or output according to the user's request. Edit and output to the device 10.

The operation of the present invention will be explained in detail below using FIGS. 2 to 10.

FIG. 2 is a diagram showing an example of a menu screen prepared by the system disk design/edit output means 1.

FIG. 3 is a flowchart showing the operation of the system disk design/edit output means 1.

When the system disk design/edit output means 1 is activated by the input/output device 9, it inquires about the user's business performance goals in a menu format (FIG. 3-31).

The questions asked in the menu are the type and scale of the work being executed on the computer, the type of disk used as the system disk, and whether or not to execute jobs that are noteworthy in terms of performance management (Figure 2). . After the menu inquiry, the system disk design/edit output means 1 starts the system disk number design means 2 (FIG. 3-32).

FIG. 4 is a flow chart showing the operation of the system disk number design means 2.

The job-specific input/output load knowledge 5 in the external storage device 4 stores knowledge about which system files have specific input/output times and how much size they require for each type of job. The disk type specific specification knowledge 6 in the external storage device 4 stores knowledge about the maximum number of input/outputs and capacity that can be tolerated in terms of performance based on the specifications for each disk type (FIG. 5).

The system disk number design means 2 first uses the information on the type and scale of the work that the system disk design/edit output means 1 obtained through the menu inquiry to determine whether or not there are any jobs that are noteworthy for performance management.
Then, by collating the input/output load knowledge 5 by business and the specification knowledge 6 by disk type in the external storage device 4, a table consisting of the required size and number of input/outputs for each system file shown in FIG. 6 is created. (Figure 4-41).

Generally, the required size of each system file varies depending on the type of system disk in which the system file is stored, but it is determined to a certain value here by referring to the specification knowledge 6 for each disk type in the external storage device 4. be done.

Furthermore, from the same information group, a table of the required size of files related to virtual memory management and the number of input/outputs that will occur is also created (Fig. 7, Fig. 4-42).

Files related to virtual memory management are also a type of system file, but in computers that operate using virtual memory management, the input/output performance of these files directly affects the performance of the entire computer system, so they should be treated with special care. and distinguish them from other system files. Files related to virtual memory management are further divided into files for page fault processing, files for file load module processing, and files for TSS processing.

After creating the necessary size of the system file - the number of input/outputs that have occurred as shown in FIG. 6 and the necessary size of the system file related to virtual memory management - the number of input/outputs that have occurred as shown in FIG. 7, the system disk number design means 2 From these two tables, calculate the number of disks required as system disks.

First, calculate the total number of input/outputs for all system files (excluding files related to virtual memory management) from Figure 6, and then calculate the number of input/outputs for system files related to virtual memory management from Figure 7. Find the total and add the two together (Figure 4, 43). The system calculates the total value by dividing this total value by the maximum allowable number of input/outputs corresponding to the disk type selected by the user in the menu questionnaire from the disk type specification knowledge 6 shown in Figure 5 (Figure 3-31). The number of disks is plan 1 (Figure 4-44).

Furthermore, the number of inputs and outputs of the file for page fault processing is known from Fig. 7, and this value was selected by the user in the menu questionnaire from the specification knowledge 6 by disk type shown in Fig. 5.
Figure 31) Divide the maximum number of allowable inputs and outputs corresponding to the disk type by 2 to obtain system disk number plan 2 (Figure 4-45).

Figure 4-45 shows that from the viewpoint of special handling of system files related to virtual memory management in terms of performance, the number of inputs and outputs of files for page fault processing must be kept below a certain standard value for each disk. This is a necessary process.

The system disk number design means 2 compares the system disk number plan 1 shown in FIG. 4-44 and the system disk number plan 2 shown in FIG. 4-45, sets the larger one as system disk number plan 3, and designs and edits the system disk. It is returned to the output means 1 (Fig. 4-46).

The system disk design/edit output means 1 receives the system disk number proposal 3, the sixth diagram, and the seventh diagram as a result (return value) of starting the system disk number design means 2, holds them, and system file layout design means 3 (Figure 3-33).

FIG. 8 is a flowchart showing the operation of the system file layout design means 3.

System file layout design model knowledge 8 in the external storage device 7 stores knowledge of system file layout models corresponding to the number of system disks. These system file arrangement models do not include system files related to virtual memory management.

In addition, these system file placement models are, to some extent,
Although performance (load distribution of input/output times) is taken into consideration, it is not compatible with all computer systems. Therefore, the system file layout design means 3 uses FIGS. 6 and 7 to readjust this system file layout model from the viewpoint of the number of input/outputs and capacity.

First, the system file layout design means 3 prepares the number of disk frames indicated by the system disk number plan 3 (No. 8
Figure-81). Next, the files for page fault processing are distributed in these disk frames, and the number of files for page fault processing is the system disk number plan 2 obtained in Figure 4-45 (Figure 8-82). ).

Next, files for load module processing are distributed and arranged in these disk frames, but the number of files for load module processing is two, and the arrangement location is arbitrary (FIG. 8-83).

Next, files for TSS processing are distributed in these disk frames, but the number of files for TSS processing is
This is the number obtained by dividing the number of input/output times of the processing file by 2, and the location can be arbitrary (Fig. 8-84).

Furthermore, add the system file layout model in system file layout design model knowledge 8 to the disk frame processed up to Figure 8-84 (Figure 8-85), and create the system file obtained in Figure 8-85. Let the arrangement plan be system file arrangement plan 1.

The processing from FIG. 8-81 to FIG. 8-85 is illustrated in FIG.

The system file layout design means 3 determines the number of individual input/outputs for all the disk frames indicated by this system file layout room 1, which the user selects from the disk type specification knowledge 6 shown in FIG. (Fig. 3-31) If the maximum number of input/outputs corresponding to the disk type is not exceeded, system file arrangement room 1 is designated as system file arrangement room 2 (Fig. 8-86).

Conversely, if the number of disk spaces exceeding the maximum allowable number of input/outputs is 1
If there is one, move the system file that is small in size and has the highest number of outputs from the disk frame with the highest number of outputs to the disk frame with the lowest number of outputs. (Figure 8-87)

If this attempt results in the number of I/Os for the disk frame to be moved exceeding the maximum allowable number of I/Os, then Attempt to move system files (
Figure 8-88).

When there are no more system files to be transferred by repeating the steps of FIG. 8-87 and FIG. 8-88, the system file arrangement state of each disk frame in that state is set as system file arrangement room 2 (FIG. 8-89). If there is a system file to be moved, but it cannot be moved to any disk slot (if moved, the maximum number of input/outputs allowed will be exceeded), add 1 to system disk number plan 3 (reduce the number by 1). increase),
Returning to the process of FIG. 8-81 (FIG. 8-8A), the process from FIG. 8-81 to FIG. 8-8A is repeated depending on the situation.

Next, the system file layout design means 3
The total size of the individual system files in all the disk frames shown in the system file arrangement room 2 of 9 is selected by the user in the menu questionnaire from the specification knowledge by disk type 6 shown in Fig. 5 (Fig. 3). -31) If the capacity does not exceed the capacity corresponding to the disk type, set system file storage room 2 to system file storage room 3 (Figure 8-
88).

On the other hand, if even one disk space exceeds its capacity,
Attempt to move the system file that is the largest in size and has the least number of input/outputs out of the disk space that has been exceeded to the disk space that has the most space (Figure 8-8C)
.

If this attempt results in insufficient capacity in the disk space to be moved, try moving the next largest system file in the disk space that has fewer input/outputs (Figure 8- 8D).

Repeat the steps in Figure 8-80 and Figure 8-8D, and when there are no more files to transfer, set the system file arrangement status of each disk frame in that state to system file arrangement room 3 (Figure 8-8E), and select the system file to be transferred. If you cannot move it to any disk slot (if you move it, the capacity will be exceeded) even though there is a
(increases the number of machines by one), returns to the process in Figure 8-81 (Figure 8-8F), and thereafter, depending on the situation,
Repeat steps 1 to 8-8F.

The system file layout design means 3 returns the system file number plan 3 and the system file layout room 3 obtained as a result of the processing from FIG. 8-81 to FIG. 8-8F to the system disk design/edit output means 1 ( Figure 8-8G).

The system disk design/edit output means 1 receives the proposed number of system disks 3 and the system file arrangement room 3 as a result (return value) of starting the system file arrangement design means 3 (FIG. 3-34).

Finally, the system disk design/edit output means 1
Planned number of system disks 3 and system file location room 3
are summarized as a system disk design proposal, and edited and output to the input/output device 9 or output device 10 shown in FIG.
Figure 3-35).

〔Effect of the invention〕

As explained above, the computer system disk design method of the present invention is designed to
The system required for the computer is determined based on the goals related to (throughput), the desired specifications of the system disk that makes up the computer, such as capacity and capacity, and various information about the individual system files that make up the system disk. A means for designing the number of disks, a means for appropriately arranging and designing the system files that make up the system disk, and further controlling these two means and transmitting the resulting design plan to the user using an input/output device. Alternatively, by providing a means for presenting the information through an output device, it is possible to design a system disk for an electronic computer easily and appropriately through interactive processing even if one is not an expert in system generation.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a menu screen prepared by the system disk design/edit output means 1, and FIG. 3 is a flowchart showing the operation of the system disk design/edit output means 1. , FIG. 4 is a flowchart showing the operation of the system disk number design means 2, and FIG. 5 is a diagram showing an example of specification knowledge 6 for each disk type in the external storage device 4.
Figure 6 is a diagram showing an example of the required size of each system file and the number of input/outputs that occur. Figure 7 is a diagram showing an example of the required size of files related to virtual memory management and the number of input/outputs that occur. Figure 8 is a flowchart showing the operation of the system file layout design means 3, FIG. 9 is an example diagram showing a part of the operation of the system file layout design means 3, and FIG. 10 is a flowchart showing the operation of the system file layout design means 3. 2 is a diagram showing an example of a system disk design plan to be output to an input/output device 9 or an output device 10. FIG. 1... System disk design/editing output means, 2...
- Means for designing the number of system disks, 3... Means for designing system file arrangement, 4... External storage device, 5...
I/O load knowledge by business, 6...Specification knowledge by disk type, 7...External storage device, 8...System file layout design model knowledge, 9...I/O device, 10...
・Output device.

Claims (1)

[Scope of Claims] 1. Knowledge of the input/output load by business with respect to the workload/performance target of a user of a computer, knowledge of the specifications by disk type such as the ability/capacity of the system disk constituting the computer, and the system disk. The external storage device is equipped with system file layout design model knowledge corresponding to the number of
Referring to the input/output load knowledge by business and the specification knowledge by disk type, design and calculate the number of system disks required for the computer, and place the system files based on the calculated required number of system disks. The system is characterized by referring to design model knowledge, appropriately arranging and designing the system files constituting the system disk, and presenting the resulting design proposal to the computer user via an input/output device or an output device. A system disk design method for electronic computers. 2. Knowledge of the input/output load by business for the workload and performance goals of computer users, knowledge of the specifications by disk type such as the capacity and capacity of the system disks that make up the computer, and the system corresponding to the number of system disks. Equipped with file layout design model knowledge in an external storage device,
Means for designing and calculating the number of system disks required for the computer by referring to the input/output load knowledge by business and the specification knowledge by disk type, and the system based on the calculated required number of system disks. means for properly designing the layout of system files constituting the system disk by referring to file layout design model knowledge;
A system disk design device for a computer, comprising means for controlling these two means and presenting the resulting design plan to a user via an input/output device or an output device.