JPH07210428A - Memory dump sampling system - Google Patents

Abstract

PURPOSE:To obtain a memory dump sampling system capable of stopping a system at the time of detecting abnormality by the system, and after sampling memory dump, quickly restarting the system. CONSTITUTION:When the system detects abnormality disabling operation during the period of operation, control is transferred to system stopping processing 20, system stopping processing is executed, the information of the abnormality disabling the operation is collected and then control is transferred to a memory dump sampling processing. Real memory sampling processing 21 outputs a real memory 16 to a dump file 12, and after outputting the memory 16 to the file 12, flag setting processing 22 sets up a flag 15 indicating the preparation of a new page file 14 in a system starting information file 11 stored in a system disk 10 and transfers control to system starting processing. Flag reference processing 23 reads out the flag 15. When the flag 15 indicates the generation of the file 14 page file generating processing 24 generates the file 14 and starts the system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memory dump collecting method, and more particularly to a memory dump collecting method suitable for use in a process of saving virtual memory in a page file.

[0002]

2. Description of the Related Art Generally, in a computer system, when an abnormal operation of the system is detected, a memory dump process for saving the contents of the real memory and the virtual memory is performed to investigate the cause. . As a conventional technique related to this type of memory dump collection processing, for example, a technique described in Japanese Patent Laid-Open No. 64-76237 is known.

According to this conventional technique, the actual memory and the page management list for managing paged-out pages are saved when a memory dump is collected when the system is stopped, and the page file is saved according to the page management list saved during system startup. Is set to the page management list to save the virtual memory in the page file so that the system can be started up early.

The use-prohibited page in the page file is made available after the system is restarted after the use-prohibited flag in the page management book is cleared after the page-out page is collected. There is.

[0005]

In the above-mentioned conventional technique, the contents of the page paged out must be saved in parallel with the work after the system is started up, and the page file can be used until a dump is collected. Since the number of pages is small, there is a problem that the memory required for carrying out the work is insufficient and the work must be reduced to operate the system.

An object of the present invention is to solve the above-mentioned problems of the prior art, save the used page file as a dump file, eliminate the need to save pages paged out after the system is started, and operate the system. A page dump file of the required size is automatically created so that it does not hinder the system restart, and a memory dump collection method that can shorten the time until the system restarts is provided. Especially.

[0007]

According to the present invention, the above object is achieved by newly creating a page file at system startup and saving an old page file as a dump file.

That is, the purpose is to provide a system start-up information file in an external storage device such as a system disk and a flag for newly creating a page file in the system start-up information file, so that a memory dump collection process is performed. Set a flag to save only the real memory to a dump file and create a new page file, and refer to the flag to create a new page file at system startup processing to allocate a new page file. It is achieved by

[0009]

When the computer detects an abnormality in which the system cannot operate during operation of the computer system, the system passes its control to the system stop processing, and in this system stop processing, only the real memory is saved in the dump file and the system is started. Set the page file creation flag in the upload information file. Next, the system passes the control to the system startup processing, and in this system startup processing, it refers to the page file creation flag of the system startup information file, and if this flag is set, it creates a new page file. To create.

As a result, the page file can be saved as a dump file as it is, and the virtual memory in the page file before the system is stopped can be saved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a memory dump collecting system according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a diagram for explaining the configuration and operation of a memory dump collecting system according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining the processing time according to one embodiment of the present invention in comparison with the case of the prior art. It is a time chart. In FIG. 1, 10 is a system disk, 11 is a system startup information file, 12 is a dump file, 13 is a page file, 1
Reference numeral 4 is a new page file, 15 is a new page file creation flag, and 16 is an actual memory.

A computer system to which the present invention is applied comprises a real memory 16 shown in FIG. 1, a system disk 10 which is an external storage device, and a processing device (not shown). The system startup information file 11 and the dump file 1 for saving the actual memory are stored in the system disk 10.
2 and a page file 13 for storing the virtual memory are provided. Then, the system startup information file 11 is provided with a flag 15 for instructing to newly create a page file.

During operation of the computer system having the above-described structure, when the system detects an inoperable abnormality, the system passes control to the system stop processing (step 20) to execute the system stop processing. , Collects information on abnormal operation and passes control to the memory dump collection process.

The memory dump collecting process includes an actual memory collecting process (step 21) and a flag setting process (step 22).
It is composed of and. In the real memory sampling process of step 21, only the contents of the real memory 16 are stored in the system disk 1
The process of outputting to the dump file 12 in 0 is executed.
In addition, the flag setting process of step 22 is performed by the real memory 16
After outputting the contents of the above to the dump file 12, the process of setting the flag 15 indicating that the new page file 14 is created in the system startup information file 11 provided in the system disk 10 is executed. Then control is
The system is brought up for processing.

The system start-up process is composed of a flag reference process (step 23) and a page file creation process (step 24). In the flag reference processing of step 23, whether or not the flag 15 indicating that the page file in the system startup information file 11 is newly created is read and the flag 15 indicating that the new page file 14 is created is set. The process of determining is executed. In this determination, the flag 15 is the new page file 1
4 indicates that the new page file 14 is created, the page file creation process 24 of step 24 executes the process of creating the new page file 14. Thereafter, control is passed to the system start-up process, and the system is started up.

In the above-described processing operation, the old page file 13 used in the system disk 10 before the system is stopped is not used after the system is restarted and is saved as a dump file. .

The processing time from the stop of the system to the restart of the system in the above-described embodiment of the present invention is
As shown in FIG. 2, system stop processing time 30 + actual memory save time 31 + flag setting time 35 + flag reference time 36 + page file creation time 37 + system startup processing time 34. This total processing time is very short as the conventional virtual memory page file read time 32 + dump file write time 33, flag setting time 35 + flag reference time 36 + page file creation time 37 in the embodiment of the present invention. Because it will be time,
The time is extremely small as compared with the prior art.

According to the above-described embodiment of the present invention, the used page file is saved as a dump file, and it is not necessary to save the paged-out page after the system is started up. Since the page file of is automatically created, the system detects an error and stops the system without interrupting the restart of the system, restarts the system in a short time after collecting a memory dump. be able to.

[0020]

As described in detail above, according to the present invention, it is possible to restart the system in a short time after the system detects an abnormality, stops the system, and collects a memory dump. be able to.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the configuration and operation of a memory dump collection method according to an embodiment of the present invention.

FIG. 2 is a time chart explaining a processing time according to an embodiment of the present invention in comparison with a case of a conventional technique.

[Explanation of symbols]

 10 system disk 11 system startup information file 12 dump file 13 page file 14 new page file 15 page file new creation flag 16 real memory

Claims (1)

[Claims] 1. A real memory, an external storage device, a page file for storing a paged-out memory provided in the external storage device, a dump file for saving the real memory, and a page on the external storage device. A function to save the memory to a dump file and restart the system when a system startup information file that has a flag that instructs to create a file is detected and the system detects an inoperable error during operation In a memory dump collection method for a computer system that has a Refer to the flag to create a page file from the upload information file, and A memory dump collection method that saves the old page file as a dump file by creating a new page file according to