JPS6242248A - Securing and control system for auxiliary storage area - Google Patents

Abstract

PURPOSE:To secure an idle area by setting auxiliary storage files on plural auxiliary memory devices having different input/output speeds and searching the auxiliary storage files having the idle areas in the order of higher input/ output speeds in a file researching mode. CONSTITUTION:An auxiliary storage area securing means 2 is started by a virtual storage control or a process swapping control. Then a file searching means 4 is started after a necessary area size (m) is designated. The means 4 checks the idle area counters in the order of counter numbers to search the first idle area counter including the value larger than (m). This relevant counter number (n) is informed to the means 2. Receiving this information, a file area securing means starting part designates the counter number (n) and the size (m) and starts a file area securing means 5. The means 5 secures an area equivalent to the size (m) only out of a storage area file 7 corresponding to the number (n) via an area securing part. Then the size (m) is subtracted from the idle area counter of the number (n).

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to a method for controlling the reservation of auxiliary storage area used for virtual memory control and process swapping control. In the reservation control of the auxiliary storage area used for process swapping control, the difference in input/output speed depending on the type of auxiliary storage device is not taken into account.

``Problem to be solved by the invention'' For this reason, in the conventional auxiliary storage area allocation control method, all auxiliary storage areas of the system are set on the same type of auxiliary storage device, and the maximum amount required by the system is The drawback is that a large amount of auxiliary storage must be set up on a high-speed auxiliary storage device.

"Means for Solving the Problem" According to the auxiliary storage allocation control method of the present invention, auxiliary storage files are stored on different li'#r4, that is, on multiple auxiliary storage devices with different input/output speeds. When there is a request for an auxiliary storage area, the file search means searches for auxiliary storage files with free space in the auxiliary storage device in descending order of input/output speed, and performs this file search. Free space is secured by the file area securing means from the auxiliary storage area file found by the means.

"Example" l-- This invention will be described in detail with reference to the drawings. Referring to FIG. 1, in one embodiment of the present invention, a processing device 1.1m secondary storage area securing means 2. File setting means 3. File search means 4. File area securing means 5. It consists of a memory 6 and an auxiliary storage file 7 on an auxiliary storage device.

As shown in FIG. 2, the auxiliary storage area securing means 2 includes a file search means starting section 21. File area securing means starting part 2
It is composed of 2. As shown in FIG. 3, the file setting means 3 is composed of a file information storage section 3.

As shown in FIG. 4, the file search means 4 is composed of an empty counter determining section 413, an empty counter accessing section 42, and a counter number notifying section 43.

As shown in FIG. 5, the file area securing means 5 includes an area securing section 51. It is composed of a counter subtraction section 52.

Operation Next, the operation of this embodiment will be explained. The system operates the file setting means 3 during its initial setting. The file setting means 3 creates file information on the memory 6 using the file information storage section 31. This file information is
As shown in FIG. 6, it is a set of free space counters 61 that exist for each type of auxiliary storage device, and counter numbers are assigned in descending order of input/output speed of the auxiliary storage device. The file information storage unit 31 sets the area size of the auxiliary storage file 7 of the auxiliary storage device corresponding to each free area counter 61.

Next, when the auxiliary storage area securing means 2 is activated by virtual memory bullet control or process swapping control, the auxiliary storage area securing means 2 specifies the required area size m by the file search means activation unit 21 and performs a file search. Activate means 4. The file search means 4 includes an empty counter determination section 41.
The next free counter access unit 42 sequentially checks the free space counters 61 in the order of counter numbers, and when the first free space counter 61 containing a value of m or more is found, the counter number n is sent to the counter number notification unit 43 for assistance. Notify the storage area securing means 2.

Upon receiving this notification, the file area securing means activating unit 22 specifies the counter number n and the required area size m, and activates the file area securing means 5. File area securing means 5
The area securing unit 51 secures an area of size m from the storage area file 7 corresponding to the counter number n, and the counter subtracting unit 52 subtracts the area size m from the free area counter 61 of the counter number n.

"Effects of the Invention" As explained above, according to the present invention, when securing an auxiliary storage area, auxiliary storage files are set up on different types of auxiliary storage devices, and the auxiliary storage devices are arranged in order of free input/output speed. By securing space, you can usually set up as many auxiliary storage files as you need on the fast auxiliary storage device, and set the rest on the slower auxiliary storage device.
In general, it is rare that all the necessary auxiliary storage files are used. Therefore, normally a high-speed auxiliary storage device is always used, and even if there are fewer high-speed auxiliary storage devices than slow auxiliary storage devices, only the high-speed auxiliary storage device is used. many.

Therefore, compared to the conventional method, there are the following effects.

a. The amount of high-speed auxiliary storage required is reduced, making the system price cheaper than before.

b. In a configuration in which high-speed auxiliary storage devices and low-speed auxiliary storage devices coexist, the effective input/output speed can be made equal to that of the high-speed auxiliary storage devices.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the auxiliary storage area securing control method of the present invention, FIG. 2 is a flow chart showing the configuration of the auxiliary storage area securing means 2 in FIG. 1, and FIG. FIG. 4 is a flowchart showing the configuration of the file setting means 3 in FIG. 1, FIG. 5 is a flowchart showing the configuration of the file search means 4 in FIG.
FIG. 6 is a flowchart showing the configuration of the file area securing means 5 in the figure, and FIG. 6 is a diagram showing the configuration of the free area counter created on the memory. 1... Processing device, 2... Auxiliary storage area securing means, 3.
...File setting means, 4...File search means,
5... File area securing means, 6... Memory, 7.
...Auxiliary storage file.

Claims (1)

[Claims] (1) In an information processing system that has an auxiliary storage area allocation means that dynamically allocates an area from an auxiliary storage area file installed on an auxiliary storage device for virtual memory control and process swapping control, an auxiliary storage area file a file setting means for setting auxiliary storage files on different auxiliary storage devices; a file search means for searching for auxiliary storage files with free space in order of the input/output speed of the auxiliary storage devices; A control method for securing an auxiliary storage area, which comprises a file area securing means that secures free space from an auxiliary storage file that has been created.