JPS6368919A - Fast start-up processing system for computer system - Google Patents

Abstract

PURPOSE:To speed up the start-up of a computer system by holding information of a main storage and information of an external storage device at the stop of the computer system and utilizing them effectively at the time of the next start-up operation. CONSTITUTION:A main storage saving means 2 performs saving control 23 over in-use information 22 indicating the position state 23 of an in-use file 24 which is stored 21 in the main storage device 1 to the external storage device 3. The external storage freezing means 5 freezes and protects the contents of the external storage device 3 which are used right before the stop of the system. A reloading means 4 when unfreezing the contents at the time of the start-up operation and initializing the file 24 to which information is outputted refers to the in-use information 22 and the free area of the file 24 and outputs the information successively to an in-use area. Consequently, the start-up operation of the system is speeded up.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to high-speed startup processing of a computer system, and particularly to speeding up startup processing.

[Conventional technology]

Conventionally, system start-up processing for a computer system involves only taking over information stored in an external storage device when the system is stopped.

[Problem that the invention seeks to solve]

The startup process of the conventional computer system described above was performed only by taking over the external storage device when the previous system was stopped, so when starting the system, it is necessary to check the operation of available peripheral devices and take over the files. When checking the usage status of a file for continuation of data, it is necessary to actually perform input/output operations to the peripheral device, which has the disadvantage that it takes time to start up the system. Particularly, if the system is stopped due to the occurrence of some kind of failure, this becomes a problem if the normal system stop processing cannot be performed and the next system needs to be started up quickly.

[Means for solving problems]

The system start-up processing method of the present invention includes a main memory evacuation control means for controlling the evacuation and storage of in-use information indicating the location and status of in-use files stored in the main memory device to an external storage device when the computer system is stopped. , a method for freezing and saving the contents of the external storage device when the system is stopped, and the location of the files used at system startup based on the usage information of the main storage device saved to the external storage device when the system is started, and the information on the files being used. It has means for reading address information indicating the state of the memory and restoring it to the main memory.

〔Example〕

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

FIG. 1 is a block diagram showing the configuration of the present invention. Second
The figure shows a detailed illustrative flowchart of the invention. 1
represents the main memory of the computer system. 2 is a main memory evacuation control means, which performs evacuation control to the external storage bag N3 of in-use information indicating the positional state of the in-use file stored in the main memory device 1 when the computer system is stopped (second
Figure 101). Reference numeral 5 denotes an external storage freezing means, which freezes and protects the contents of the external storage device 3 that were in use until immediately before the computer system was stopped (FIG. 2, 102).

Note that the external storage bag N3 stores essential files used during system operation. 4 is a main memory restoring means, and when starting up the computer system, external memory freezing means 5
After unfreezing the external storage device 3 (Figure 2 201)
, the information in use that was saved in the external storage device 3 and was stored in the main storage device 1 when the computer system was stopped is restored to the main storage device 1 (FIG. 2, 201). Then, when writing data continuously to the data in the external storage bag N3 that was saved when the computer system was stopped, the writing position of the data is obtained by referring to the in-use information restored in the main storage device 1. This eliminates the need to input data into the external storage bag N3 to check the data usage area and obtain the next data writing position, making it possible to realize high-speed start-up of the computer system.

FIG. 3 is a conceptual diagram showing an example of information saved from the main storage device 1 and the state of the corresponding file. 21 represents the state of storage in the main memory, and 22 represents in-use information to be compared. 23 represents the state of the external storage indicated by the saved information 22, and 24 represents a file. At system startup, when initializing 24 files that continue to output data to the area that was previously used when the system was stopped, the used location information and file free space information are referenced based on the in-use information of 22 files. By doing so, data can be continuously output to the area used by the 24 files without accessing the 24 files at all.

〔Effect of the invention〕

As explained above, the present invention saves information in the main memory and information in the external storage device when the computer system is stopped,
Effective use of the saved information at the time of the next system startup has the effect of speeding up the system startup.

[Brief explanation of the drawing]

FIG. 1 is a process diagram showing an embodiment of the present invention, FIGS. 2(a) and (b) are flowcharts explaining the invention in detail, and FIG. FIG. 2 is a conceptual diagram showing information and the state of a file indicated by the information. Reference numeral 1 indicates a main memory device, 2 a main memory evacuation control means, 3 an external storage device, 4 a main memory restoration means, and 5 an external memory freezing means.

Claims (1)

[Claims] In the system start-up processing method of a computer system,
A main memory evacuation control means that saves and controls in-use information indicating the location and status of files in use stored in the main memory device to an external storage device when the system is stopped, and freezes the contents of the external storage device when the system stops. and information indicating the file location and in-use status used at system startup from the main storage usage information saved to the external storage device at system startup and restore it to the main storage. 1. A computer system high-speed start-up processing method comprising: means for: