WO2013001607A1

WO2013001607A1 - Information processing device, management program and management method

Info

Publication number: WO2013001607A1
Application number: PCT/JP2011/064819
Authority: WO
Inventors: 松田　隆
Original assignee: 富士通株式会社
Priority date: 2011-06-28
Filing date: 2011-06-28
Publication date: 2013-01-03

Abstract

An information processing device (1) identifies the amount of a memory region allocated to a logging output program (14) which outputs log information of programs from a memory (20) to an HDD (30). Also, the information processing device (1) assesses whether or not the identified amount of the memory region is larger than a threshold value. If the amount of the memory region is assessed to be larger than the threshold value, the information processing device (1) updates a dispatch management table (16) so that the priority associated with the logging output program (14) is higher than the priority of other programs.

Description

Information processing apparatus, management program, and management method

The present invention relates to an information processing apparatus, a management program, and a management method.

Conventionally, a technology of an information processing apparatus that records a log of a program execution history and a communication history is known. Such an information processing apparatus stores a program execution history and a communication history on a memory, and outputs a log stored on the memory to a storage device such as an HDD (Hard Disk Drive).

Hereinafter, an example of such an information processing apparatus will be described with reference to the drawings. FIG. 12 is a diagram for explaining a conventional information processing apparatus. In the example illustrated in FIG. 12, the information processing apparatus 40 includes a CPU (Central Processing Unit) 41, a memory 47, and an HDD 49. Further, the CPU 41 executes an OS (Operating System) 42.

The OS 42 includes a dispatch control unit 43, a system control program 45, and a logging output program 46. In the example shown in FIG. 12, the memory 47 stores logging information 48 that is a log of the execution history and communication history of the system control program 45. The HDD 49 also stores a log file 50 that is logging information moved from the memory 47.

The dispatch control unit 43 has a dispatch management table 44 indicating the priority with which the CPU 41 executes the

programs

45 and 46. FIG. 13 is a diagram for explaining a conventional dispatch management table. In the example shown in FIG. 13, the dispatch management table 44 stores the execution priority and the load address in association with each other.

For example, in the example illustrated in FIG. 13, the dispatch management table 44 includes “execution priority 1”, “load address # 1”, “execution priority 2”, “load address # 2”, and “execution priority 5”. And “load address # 3” are stored in association with each other. Here, “load address # 1” is the load address of the system control program 45, and “load address # 3” is the load address of the logging output program 46. When executing each program according to the dispatch management table 44 illustrated in FIG. 13, the CPU 41 executes the system control program 45 with priority over the logging output program 46.

Returning to FIG. 12, the system control program 45 creates a log of its own execution history and communication history, stores the created log in the memory 47 as logging information 48, and sends logging information to the logging output program 46. Request output. When the logging output program 46 is requested to output logging information from the system control program 45, the logging output program 46 executes the following processing.

That is, the logging output program 46 secures its own memory area in the memory 47, and moves as logging information 48a to the memory area where the logging information 48 of the system control program 45 is secured, as shown in FIG. . Then, the logging output program 46 stores the logging information 48a moved to its own memory area in the HDD 49 as the log file 50 and releases the memory area secured by itself.

JP 2009-251747 A

However, in the technique of executing a program according to the execution priority indicated by the dispatch management table described above, the execution priority of the system control program is higher than the execution priority of the logging output program. For this reason, as a result of the system control program preferentially executing the logging output program, the logging output program is not executed, and the logging information is accumulated in the memory, resulting in a shortage of memory resources.

In addition, since the speed of executing the system control program is improved by improving the processing capability of the CPU, the amount of logging information output by the system control program exceeds the performance of outputting the logging information by the logging output program. As a result, the memory is used to store the logging information of the system control program, and the system cannot be operated due to a lack of memory resources.

In addition, the information processing device investigates system failures when it stops collecting logging information for each program, including the system control program, in order to release memory resources when memory resources are about to run out. Logging information cannot be obtained.

In order to prevent a shortage of memory resources, a technique that preferentially collects logging information for programs with a high operation rate can be considered. However, with such a technique, logging information for a program having a low operation rate is not acquired, and therefore logging information for investigating a system malfunction or the like cannot be acquired.

In one aspect, the technology disclosed in the present application aims to smoothly collect a log of a program execution history and a communication history.

In one aspect, the information processing apparatus executes each program according to priority information indicating a correspondence relationship between a plurality of programs and the execution priority of each program. Such an information processing apparatus identifies the amount of memory area allocated to a log output program that outputs log information of each program from a memory to a storage device. Further, the information processing apparatus determines whether the amount of the identified memory area is larger than a threshold value. When the information processing apparatus determines that the amount of the identified area is greater than the threshold, the information processing apparatus updates the priority associated with the log output program in the priority information higher than the priority of the other programs. .

In one aspect, program execution history and communication history logs can be collected smoothly.

FIG. 1 is a diagram for explaining the information processing apparatus according to the first embodiment. FIG. 2 is a diagram for explaining a system hierarchy table among the dispatch management tables of the system according to the first embodiment. FIG. 3 is a diagram for explaining a dispatch management table for each program group. FIG. 4 is a diagram for explaining an example of the memory management table. FIG. 5 is a diagram for explaining processing in which the execution priority control unit according to the first embodiment updates the dispatch management table. FIG. 6 is a diagram for explaining the contents of processing that is normally performed in the information processing apparatus according to the first embodiment. FIG. 7 is a diagram for explaining the contents of processing executed when the information processing apparatus according to the first embodiment runs out of memory resources. FIG. 8 is a diagram for explaining the contents of processing executed when a margin is generated in the memory resource in the information processing apparatus according to the first embodiment. FIG. 9 is a flowchart for explaining an example of a flow of processing executed by the information processing apparatus according to the first embodiment according to the dispatch management table. FIG. 10 is a flowchart for explaining an example of a process flow for updating the dispatch management table according to the first embodiment. FIG. 11 is a diagram illustrating an example of a computer that executes a management program. FIG. 12 is a diagram for explaining a conventional information processing apparatus. FIG. 13 is a diagram for explaining a conventional dispatch management table.

Hereinafter, an information processing apparatus, a management program, and a management method according to the present application will be described with reference to the accompanying drawings.

In the following first embodiment, an example of an information processing apparatus will be described with reference to FIG. FIG. 1 is a diagram for explaining the information processing apparatus according to the first embodiment. In the example illustrated in FIG. 1, the information processing apparatus 1 includes a CPU (Central Processing Unit) 10, a memory 20, and an HDD (Hard Disk Drive) 30.

Further, the CPU 10 executes an OS (Operating System) 11. The OS 11 includes a program group 12, a dispatch control unit 15, a memory management control unit 17, and an execution priority control unit 19. The program group 12 includes a system control program 13 and a logging output program 14. The dispatch control unit 15 has a dispatch management table 16.

Further, the memory management control unit 17 has a memory management table 18. Although not shown in FIG. 1, the program group 12 has various programs other than the system control program 13 and the logging output program 14 for exhibiting the function as the OS 11. The memory 20 also stores logging information 21 that is an execution history and communication history of the system control program 13. The HDD 30 stores a log file 31 that is logging information output by the logging output program 14.

Here, the program group 12 is a group of programs that are executed in order to realize processing such as a communication function and a calculation function. For example, the program group 12 is a group of a plurality of programs that are executed by the CPU 10 in order for the information processing apparatus 1 to provide services such as network communication.

Hereinafter, the units 13 to 19 included in the OS 11 executed by the CPU 10 will be described. The system control program 13 is a program executed by the CPU 10. For example, the system control program 13 is a program that causes the CPU 10 to execute various arithmetic processes that are executed to provide a service provided by the information processing apparatus 1. Further, the system control program 13 stores its own execution history and communication history in the memory 20 as logging information 21.

Hereinafter, the processing of the stem control program 13 executed by the CPU 10 will be specifically described. First, the system control program 13 requests the memory management control unit 17 to allocate a memory area to itself. When the memory area is allocated by the memory management control unit 17, the system control program 13 stores its own execution history and communication history in the memory 20 as logging information 21. Further, when the logging information 21 is stored in the memory 20, the system control program 13 requests the logging output program 14 to output the logging information 21.

Next, the processing of the logging output program 14 executed by the CPU 10 will be specifically described. The logging output program 14 is a program that outputs logging information 21 stored in the memory 20 to the HDD 30. Specifically, when the output of logging information 21 is requested from the system control program 13, the logging output program 14 executes the following processing. That is, the logging output program 14 requests the memory management control unit 17 to allocate a memory area to itself.

When the memory area is allocated by the memory management control unit 17, the logging output program 14 copies the logging information 21 stored in the memory area of the system control program 13 to its own memory area. Further, when the logging output program 14 duplicates the logging information 21 in its own memory area, the logging output program 14 deletes the logging information 21 stored in the memory area of the system control program 13.

That is, the logging output program 14 collects the logging information 21 of the system control program 13. Then, the logging output program 14 requests the memory management control unit 17 to release the area in which the logging information 21 is stored, among the memory areas allocated to the system control program 13. Then, the logging output program 14 outputs the logging information 21 copied to its own memory area to the log file 31 of the HDD 30. Further, the logging output program 14 requests the memory management control unit 17 to release the memory area allocated to itself.

The dispatch control unit 15 controls the priority executed by the CPU 10 for each of the

programs

13 and 14 included in the program group 12. Specifically, the dispatch control unit 15 includes a dispatch management table 16 that stores a priority level at which the CPU 10 executes the

programs

13 and 14 and a load address of each program in association with each other. Then, the dispatch control unit 15 executes the dispatch process according to the priority associated with the load address of each program.

Here, the dispatch management table 16 has a hierarchical structure, and each hierarchy corresponds to the contents of processing executed by the CPU 10. Hereinafter, a specific example of the dispatch management table 16 will be described with reference to the drawings. FIG. 2 is a diagram for explaining a system hierarchy table among the dispatch management tables of the system according to the first embodiment. FIG. 2 is a diagram showing an example of a system layer dispatch management table 16a in which load addresses of a plurality of programs A to Z executed by the CPU 10 are associated with priorities of the programs A to Z.

Note that the programs A to Z are different from the

programs

13 and 14 included in the program group 12, and are programs executed by the CPU 10 for realizing a service provided by the information processing apparatus 1, for example. That is, the dispatch management table 16a is a table indicating the priorities for all programs executed by the information processing apparatus 1.

Also, “●” is stored as the program group chain flag in the dispatch management table 16a in the system hierarchy. The program group chain flag “●” is associated with the dispatch management table 16b in which priority and load address are associated with each other in program group units.

Hereinafter, the dispatch management table for each program group will be described with reference to FIG. FIG. 3 is a diagram for explaining a dispatch management table for each program group. In the example illustrated in FIG. 3, the dispatch management table 16 b stores the execution priority 3 and the load address of the system control program 13 in association with each other. The dispatch management table 16b also stores the execution priority N and the load address of the logging output program 14 in association with each other. That is, the dispatch management table 16b is a table for setting priorities of the

programs

13 and 14 included in the program group 12.

As will be described later, when there are a plurality of processing waiting programs, the CPU 10 executes the program according to the priority indicated by the dispatch management table 16a. For example, if the program A and the program X are waiting programs, the CPU 10 executes the program A first and then executes the program X.

In addition, when the processing waiting program is included in the program group chain area, that is, when the processing waiting program is a program included in the program group 12, the CPU 10 reads the dispatch management table 16b. Then, the CPU 10 executes the program according to the priority indicated by the dispatch management table 16b.

Referring back to FIG. 1, the memory management control unit 17 manages the area of the memory 20. Specifically, the memory management control unit 17, when requested to allocate a memory area from each of the

programs

13 and 14 executed by the CPU 10, is a memory that is not allocated among the storage areas of the memory 20. Earn part of the area. Then, the memory management control unit 17 allocates the acquired memory area to the program that requested the allocation of the memory area. Further, when the memory management control unit 17 is requested to release the memory area, the memory management control part 17 releases the requested memory area.

Further, the memory management control unit 17 checks the amount of memory area allocated to the logging output program 14 every time the logging output program 14 included in the program group requests acquisition of the memory area and release of the memory area. The memory management control unit 17 sets the execution priority of the logging output program 14 to the priority of other programs (for example, the system control program 13) when the amount of the identified memory area is larger than a predetermined threshold. Is also notified to the execution priority control unit 19 so as to be a high value.

Hereinafter, a process in which the memory management control unit 17 changes the execution priority of the logging output program 14 will be specifically described. The memory management control unit 17 has a memory management table 18. Here, the memory management table 18 stores the amount of memory area allocated to the logging output program 14 and the execution priority in association with each other.

FIG. 4 is a diagram for explaining an example of the memory management table. In the example illustrated in FIG. 4, the memory management table 18 stores the threshold [xx%] and the execution priority 1 in association with each other, and stores the threshold [yy%] and the execution priority 2 in association with each other. Further, the memory management table 18 stores information indicating the normal state and the execution priority 3 in association with each other. The memory management table 18 stores an execution priority N as information indicating the current execution priority. Here, it is assumed that the threshold value [xx%] is higher than the threshold value [yy%]. For example, the threshold [xx%] is [80%], and the threshold [yy%] is [70%]. The threshold value may be set by the user as an arbitrary value.

For example, the memory management control unit 17 allocates a memory area to the logging output program 14 or releases a memory area allocated to the logging output program 14. Then, the memory management control unit 17 calculates the ratio of the memory area allocated to the logging output program 14 to the entire memory 20 after the memory area is allocated or the memory area is released.

Then, the memory management control unit 17 determines whether or not the calculated ratio is greater than the threshold value [xx%]. If it is determined that the calculated ratio is higher, the execution is stored in association with the threshold value [xx%]. Priority 1 is acquired. On the other hand, if the memory management control unit 17 determines that the calculated ratio is less than the threshold value [xx%], the memory management control unit 17 determines whether the calculated ratio is greater than the threshold value [yy%].

When the memory management control unit 17 determines that the calculated ratio is greater than the threshold value [yy%], the memory management control unit 17 acquires the execution priority 2 stored in association with the threshold value [yy%]. Further, when the memory management control unit 17 determines that the calculated ratio is less than the threshold value [yy%], the memory management control unit 17 determines that the state of the memory area allocated to the logging output program 14 is the normal state. In such a case, the memory management control unit 17 acquires the execution priority 3 associated with the information indicating the normal state.

Further, when the execution priority is acquired, the memory management control unit 17 determines whether or not the acquired execution priority and the execution priority stored as the current execution priority are the same. When the memory management control unit 17 determines that the acquired execution priority is different from the execution priority stored as the current execution priority, the memory management control unit 17 executes the following processing. That is, the memory management control unit 17 updates the execution priority stored as the current execution priority to the acquired priority. In addition, the memory control unit 17 notifies the execution priority control unit 19 of the acquired execution priority.

On the other hand, if the acquired execution priority and the execution priority stored as the current execution priority are the same, the memory management control unit 17 determines the execution priority stored as the current execution priority. The process is terminated without notifying the change and execution priority control unit 19.

Returning to FIG. 1, the execution priority control unit 19 updates the execution priority of the logging output program 14 stored in the dispatch management table 16. Specifically, when the execution priority control unit 19 receives the execution priority from the memory management control unit 17, the execution priority control unit 19 executes the following processing. That is, the execution priority control unit 19 executes the execution priority notified from the memory management control unit 17 of the execution priority stored in association with the logging output program 14 in the dispatch management table 16 stored in the dispatch control unit 15. Update every time.

For example, FIG. 5 is a diagram for explaining processing in which the execution priority control unit according to the first embodiment updates the dispatch management table. As illustrated in FIG. 5, the execution priority control unit sets the execution priority of the logging output program load address stored in the dispatch management table 16 b as the execution priority 1.

Next, the flow of processing executed by the units 12 to 19 will be described with reference to FIGS. FIG. 6 is a diagram for explaining the contents of processing that is normally performed in the information processing apparatus according to the first embodiment. FIG. 7 is a diagram for explaining the contents of the process executed when the memory resource is insufficient in the information processing apparatus according to the first embodiment. FIG. 8 is a diagram for explaining the contents of processing executed when a margin is generated in the memory resource in the information processing apparatus according to the first embodiment.

First, the contents of processing executed in normal time will be described with reference to FIG. First, as shown in FIG. 6A, the system control program 13 requests the memory management control unit 17 to allocate a memory area of the memory 20. In such a case, the memory management control unit 17 secures a memory area of the system control program 13 in the memory 20 as shown in FIG.

Next, the system control program 13 stores the logging information 21 in its own memory area secured in the memory 20. Then, the system control program 13 requests the logging output program 14 to output the logging information 21 as shown in FIG. In such a case, the logging output program 14 requests the memory management control unit 17 to allocate a memory area as shown in FIG.

Here, as shown in FIG. 6E, the memory management control unit 17 secures the memory area of the memory management control unit 17 and determines the ratio of the memory area allocated to the logging output program 14. In the example illustrated in FIG. 6, the memory management control unit 17 determines that the execution priority of the logging output program 14 has not been changed.

In such a case, as shown in FIG. 6F, the logging output program 14 creates a copy 22 of the logging information in the area allocated with confidence, and deletes the logging information 21. The logging output program 14 moves the logging information 21 to the memory area allocated to the logging output program 14 every time the system control program 13 requests the logging information 21 to be output.

The logging output program 14 executes the following processing when the amount of logging information 21 stored in its memory area exceeds a predetermined amount. That is, the logging output program 14 stores a copy 22 of the logging information in the log file 31 stored in the HDD 30 as shown in FIG.

Next, the contents of processing for changing the execution priority of the logging output program 14 when memory is likely to be insufficient will be described with reference to FIG. FIG. 7 is a diagram for explaining processing for increasing the execution priority of the logging output program in the information processing apparatus according to the first embodiment. In the example illustrated in FIG. 7, when a new memory area is allocated to the logging output program 14, the ratio of the memory area allocated to the logging output program 14 exceeds the threshold [xx%]. . In the example shown in FIG. 7, it is assumed that the load address of the system control program 13 is associated with the execution priority 3.

For example, as shown in FIG. 7H, the system control program 13 requests the memory management control unit 17 to allocate a memory area. In such a case, as shown at (I) in FIG. 7, the memory management control unit 17 allocates a memory area from the memory 20 to the system control program 13.

When the memory area is allocated, the system control program 13 stores the logging information 21 in the allocated area, and also stores the logging information 21 in the logging output program 14 as shown in FIG. Request output. In such a case, as shown in FIG. 7K, the logging output program 14 requests the memory management controller 17 to allocate memory.

In such a case, the memory management control unit 17 allocates the area of the memory 20 to the logging output program 14 as shown in (L) of FIG. Then, as shown in FIG. 7M, the logging output program 14 creates a copy 22 of the logging information in the area allocated by the user, and deletes the logging information 21.

Also, the memory management control unit 17 refers to the memory management table 18 and determines whether or not the ratio of the memory area allocated to the logging output program 14 exceeds the threshold [xx%]. In the example illustrated in FIG. 7, the memory management control unit 17 determines that the ratio of the memory area allocated to the logging output program 14 exceeds the threshold [xx%]. That is, as indicated by (N) in FIG. 7, the memory management control unit 17 determines to change the execution priority of the logging output program 14.

Then, the memory management control unit 17 notifies the execution priority control unit 19 of the execution priority 1 stored in the memory management table 18 in association with the threshold [xx%], as indicated by (O) in FIG. To do. Then, the execution priority control unit 19 stores the load address of the logging output program 14 in the dispatch management table 16 in the table of execution priority 1 and the load address of the logging output program 14 in the dispatch management table 16 as shown in FIG. To chain. That is, the execution priority control unit 19 updates the execution priority associated with the load address of the logging output program 14 to the execution priority 1 notified from the memory management control unit 17.

In such a case, the execution priority of the logging output program 14 is higher than the execution priority of the system control program 13. For this reason, the logging output program 14 can preferentially execute the process of outputting the copy 22 of the logging information to the log file 31 as indicated by (Q) in FIG.

In this way, the information processing apparatus 1 identifies the proportion of the memory area allocated to the logging output program 14, and when the identified proportion is higher than a predetermined threshold, the execution priority of the logging output program 14 is high. Change to priority. For this reason, the information processing apparatus 1 can prevent the memory resource from being insufficient as a result of executing the logging output program 14 with priority. Further, the information processing apparatus 1 does not stop the operation of the logging output program 14. For this reason, the information processing apparatus 1 can smoothly collect the logging information even when a problem occurs as a result of outputting the copy 22 of the logging information to the log file 31.

Next, an example of processing for lowering the execution priority of the logging output program 14 will be described with reference to FIG. FIG. 8 is a diagram for explaining processing in which the information processing apparatus according to the first embodiment lowers the execution priority of the logging output program. In the example shown in FIG. 8, it is assumed that the execution priority of the logging output program 14 is the execution priority 1. When the logging output program 14 releases the memory area, the ratio of the memory area allocated to the logging output program 14 is assumed to be lower than the threshold value [yy%].

First, in the example shown in FIG. 8, as shown in (R) in FIG. 8, the logging output program 14 stores a copy 22 of the logging information stored in its memory area (that is, logging information 21) in the log of the HDD 30. Output to file 31. Further, when the logging output program 14 outputs a copy 22 of the logging information, as shown in (S) of FIG. 8, the logging output program 14 requests the memory management control unit 17 to release the memory area allocated to itself. .

In such a case, the memory management control unit 17 releases the memory area allocated to the logging output program 14 as shown in (T) of FIG. In addition, the memory management control unit 17 compares the ratio of the memory area allocated to the logging output program 14 with the respective threshold values stored in the memory management table 18 after the memory area is released. In the example illustrated in FIG. 8, the memory management control unit 17 determines that the ratio of the memory area allocated to the logging output program 14 is lower than the threshold “yy%”.

For this reason, the memory management control unit 17 determines to change the priority as shown in FIG. Then, as shown in (V) in FIG. 8, the memory management control unit 17 notifies the execution priority control unit 19 of the execution priority 5 associated with the normal state. In such a case, the execution priority control unit 19 links the load address of the logging output program 14 to a table of execution priority 5 as shown in (W) of FIG. In other words, the execution priority control unit 19 shifts the execution priority of the logging output program 14 to a normal state lower than that of the system control program 13 by lowering the execution priority of the logging output program 14.

As described above, when the ratio of the memory area allocated to the logging output program 14 is lower than the predetermined threshold, the information processing apparatus 1 sets the execution priority of the logging output program 14 over the other programs. Update to a lower execution priority. For this reason, the information processing apparatus 1 can lower the execution priority of the logging output program 14 when the logging information 21 is output and there is room in the memory area of the memory 20. As a result, the information processing apparatus 1 can prioritize the execution of programs other than the logging output program 14 such as the system control program 13 when there is room in the memory area.

[Processing flow of information processing apparatus 1]
Next, the flow of processing in which the information processing apparatus 1 executes each program according to the dispatch management tables 16a and 16b will be described with reference to FIG. FIG. 9 is a flowchart for explaining an example of a flow of processing executed by the information processing apparatus according to the first embodiment according to the dispatch management table.

In the example shown in FIG. 9, the information processing apparatus 1 starts processing with the activation as a trigger. First, the information processing apparatus 1 reads the dispatch management table 16a for each system (step S101). Next, the information processing apparatus 1 determines whether there is a process waiting program (step S102). If the information processing apparatus 1 determines that there is a program waiting for processing (Yes in step S102), the information processing apparatus 1 determines whether the program waiting for processing is a program included in the program group chain area (step S103). That is, the information processing apparatus 1 determines whether or not the processing waiting program is a program included in the program group 12.

If the information processing apparatus 1 determines that the program waiting for processing is not a program included in the program group chain area (No at Step S103), the information processing apparatus 1 executes the program according to the dispatch management table 16a for each system (Step S104). ). On the other hand, when the information processing apparatus 1 determines that the program to be processed is a program included in the program group chain area (Yes at Step S103), the information processing apparatus 1 reads the dispatch management table 16b for each program group (Step S105). .

The information processing apparatus 1 determines again whether there is a program waiting for processing (step S106). If it is determined that there is a program waiting for processing (Yes in step S106), the information processing apparatus 1 executes the following processing. That is, the information processing apparatus 1 executes from a program having a high execution priority according to the execution priority indicated by the dispatch management table 16b in units of program groups (step S107). Then, the information processing apparatus 1 again determines whether there is a processing waiting program (step S106).

On the other hand, if the information processing apparatus 1 determines that there is no processing waiting program (No in step S106), it reads the system-by-system dispatch management table 16a (step S101) and determines whether there is a processing waiting program. (Step S102). If the information processing apparatus 1 determines that there is no processing waiting program in the state in which the dispatch management table 16a is read (No in step S102), the information processing apparatus 1 ends the processing.

Next, the flow of processing in which the memory management control unit 17 updates the dispatch management table 16 will be described with reference to FIG. FIG. 10 is a flowchart for explaining an example of a process flow for updating the dispatch management table according to the first embodiment.

First, the memory management control unit 17 receives a memory area allocation request or a memory area release request (step S201). Next, the memory management control unit 17 determines whether or not the memory area release request or allocation request is a request from the logging output program 14 (step S202). When the memory management control unit 17 determines that the memory area release request or the allocation request is a request from the logging output program 14 (Yes in Step S202), the memory management control unit 17 refers to the memory management table 18 (Step S203). .

Further, the memory management control unit 17 identifies the amount of the memory area allocated to the logging output program 14 (Step S204), and confirms the threshold corresponding to the identified amount from the memory management table 18 (Step S205). Next, the memory management control unit 17 determines whether or not the corresponding threshold exists in the memory management table 18 (step S206). If it is determined that it exists (Yes in step S206), The corresponding execution priority is acquired (step S207).

On the other hand, if it is determined that there is no threshold corresponding to the memory management table 18 (No at Step S206), the memory management control unit 17 acquires the execution priority in the normal state (Step S208). Thereafter, the memory management control unit 17 determines whether or not the acquired execution priority is different from the current execution priority (step S209). If it is determined that the execution priority is different (Yes in step S209), the following processing is performed. Execute. That is, the memory management control unit 17 notifies the execution priority control unit 19 of the acquired execution priority (step S210). Further, the memory management control unit 17 stores the acquired execution priority as the current execution priority in the memory management table 18 (step S211), and ends the process. If the memory management control unit 17 determines that the acquired execution priority is the same as the current execution priority (No at step S209), the memory management control unit 17 ends the process. If the memory management control unit 17 determines that the memory area release request or allocation request is not a request from the logging output program 14 (No in step S202), the memory management control unit 17 performs the process without updating the dispatch management table. finish.

[Effect of Example 1]
As described above, the information processing apparatus 1 executes each program according to the dispatch management table 16 that stores the load address of each program and the execution priority for executing each program in association with each other. Further, the information processing apparatus 1 identifies the amount of memory area allocated to the logging output program 14. When the information processing apparatus 1 determines that the amount of the identified memory area is larger than the predetermined threshold, the information processing apparatus 1 sets the execution priority stored in the dispatch management table 16 in association with the logging output program 14. Improve.

For this reason, the information processing apparatus 1 can output the log information 31 to the log file 31 without losing the logging information 21 while preventing a shortage of memory resources. That is, the information processing apparatus 1 operates the logging output program 14 with priority over other programs such as the system control program 13 when memory is likely to be insufficient. For this reason, the information processing apparatus 1 can avoid a delay in memory resources when the logging information 21 is accumulated in the memory 20. Further, the information processing apparatus 1 can smoothly output logging information of a program having a low operation rate.

Further, the information processing apparatus 1 does not modify each program such as the system control program 13 and the logging output program 14 only by changing the part related to dispatch control, memory management control, and execution priority control in the OS 11. Performance tuning can be performed automatically. In other words, the information processing apparatus 1 can change the execution priority of the logging output program 14 by changing only the parts related to the dispatch control, memory management control, and execution priority control of the OS 11 and without modifying other programs. Can be updated appropriately. As a result, it is possible to easily provide the OS 11 that keeps collecting all the logging information 21 while preventing a memory shortage.

In addition, the information processing apparatus 1 includes dispatch management tables 16a and 16b having a hierarchical structure related to priority. When the amount of memory area allocated to the logging output program 14 is larger than a predetermined threshold, the information processing apparatus 1 sets the execution priority of the log output program to another in the same dispatch management table. Update to a value higher than the execution priority of the program. Therefore, the information processing apparatus 1 can preferentially execute the log output program without affecting the execution of each program whose priority is managed by the dispatch management table in the upper hierarchy.

That is, the information processing apparatus 1 changes the priority of the logging output program 14 in the dispatch management table for each program group having the processing waiting program. For this reason, the information processing apparatus 1 can update the execution priority without affecting the basic program of the information processing apparatus 1 or the program whose priority is not desired to be changed.

Further, when the amount of the memory area allocated to the logging output program 14 is smaller than a predetermined threshold, the information processing apparatus 1 sets the execution priority of the log output program lower than the execution priority of other programs. Update to the value, ie, the original execution priority. For this reason, the information processing apparatus 1 can dynamically set the most efficient execution priority as the entire system.

Further, the information processing apparatus 1 determines the execution priority of the logging output program 14 based on whether the ratio of the memory area allocated to the first threshold and the second threshold and the logging output program 14 is large. Update. For this reason, the information processing apparatus 1 can update the execution priority of the logging output program 14 more appropriately.

In addition, the information processing apparatus 1 has a memory management table 18 that stores the execution priority for each range of the amount of memory area allocated to the logging output program 14. Then, the information processing apparatus 1 changes the execution priority of the logging output program 14 based on which threshold range the amount of memory area allocated to the logging output program 14 falls within. For this reason, the information processing apparatus 1 can finely change the execution priority of the logging output program 14 and set the most efficient execution priority.

Although the embodiments of the present invention have been described so far, the embodiments may be implemented in various different forms other than the embodiments described above. Therefore, another embodiment included in the present invention will be described below as a second embodiment.

(1) Dispatch Management Table In the first embodiment described above, the system-by-system dispatch management table 16a and the program group-by-program group dispatch management table 16b have been described. However, the embodiment is not limited to this. That is, the program group unit dispatch management table 16b is the dispatch management table 16b stored in the information processing apparatus 1 for each program group. For example, when the information processing apparatus 1 has three program groups, the information processing apparatus 1 has three dispatch management tables for each program group in which execution priority is set for each program group.

In the first embodiment, the dispatch management table 16 stores “●” as the flag of the program group chain area. However, the embodiment is not limited to this, and any information can be used as a flag as long as it is information for identifying a dispatch management table in units of program groups to be referred to by the information processing apparatus 1. Can do.

(2) Memory Management Table The memory management table 18 described above stores the ratio of the memory area allocated to the logging output program 14 as a threshold value. However, the embodiment is not limited to this, and for example, the capacity of the memory area allocated to the logging output program 14 may be used as the threshold value. Each threshold value stored in the memory management table 18 may be fixed for each system. Each threshold value stored in the memory management table 18 may be freely set by a system administrator.

(3) Program By the way, the information processor 1 concerning Example 1 explained processing realized by hardware. However, the embodiment is not limited to this, and may be realized by executing a program prepared in advance by a computer. In the following, an example of a computer that executes a program having the same function as that of the information processing apparatus 1 shown in the first embodiment will be described with reference to FIG.

FIG. 11 is a diagram for explaining an example of a computer that executes a management program. The computer 100 illustrated in FIG. 11 includes a ROM (Read Only Memory) 110, an HDD (Hard Disk Drive) 120, a RAM (Random Access Memory) 130, a CPU (Central Processing Unit) 140, and an I / O (Input Output) 150. Are connected by a bus 170.

The RAM 130 stores a management program 131 in advance. The CPU 140 reads and executes the management program 131, so that the management program 131 operates as the management process 141 in the example shown in FIG. The management process 141 exhibits the same function as the information processing apparatus 1.

The management program described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program can be distributed via a network such as the Internet. This program is recorded on a computer-readable recording medium such as a hard disk, flexible disk (FD), CD-ROM (Compact Disc Read Only Memory), MO (Magneto Optical Disc), DVD (Digital Versatile Disc). The The program can also be executed by being read from a recording medium by a computer.

1, 40

Information processing device

10, 41 CPU (Central Processing Unit)
11, 42 OS (Operating System)
12

Program group

13, 45

System control program

14, 46

Logging output program

15, 43

Dispatch control unit

16, 16a, 16b, 44 Dispatch management table 17 Memory management control unit 18 Memory management table 19 Execution

priority control unit

20, 47 Memory 21

Logging information

30, 49 HDD
31, 50

Log file

48, 48a Logging information

Claims

An information processing apparatus that executes each program according to priority information indicating a correspondence relationship between a plurality of programs and the priority of executing each program,
An identification unit for identifying an amount of a memory area allocated to a log output program that outputs log information of each program from a memory to a storage device;
A determination unit for determining whether or not the amount of the memory area identified by the identification unit is greater than a threshold;
Update that updates the priority associated with the log output program in the priority information higher than the priority of other programs when the determination unit determines that the amount of the memory area is greater than a threshold value And
An information processing apparatus comprising:
The priority information has a hierarchical structure hierarchized for each priority, and the information processing apparatus executes each program for each hierarchy of the priority information,
When the determination unit determines that the area is greater than the threshold, the update unit determines that the log output program has a priority stored in the hierarchy in which the priority of the log output program is stored. The information processing apparatus according to claim 1, wherein the priority of the output program is updated to be higher than the priority of the other program.
If the updating unit determines that the amount of the memory area identified by the identifying unit is less than a threshold value, the updating unit assigns the priority associated with the log output program in the priority information to the other program. The information processing apparatus according to claim 1, wherein the information processing apparatus is updated to be lower than the priority.
When the determination unit determines whether the amount of the memory area identified by the identification unit is greater than a first threshold, and determines that the amount of the memory area is smaller than the first threshold Determining whether or not the amount of the memory area is larger than a second threshold value smaller than the first threshold value;
When the determination unit determines that the amount of the memory area is greater than the first threshold, the update unit updates the priority stored in association with the log output program to the highest level, When it is determined that the amount of the memory area is smaller than the first threshold and larger than the second threshold, the priority stored in association with the log output program is updated to the second highest. The information processing apparatus according to claim 1 or 2, characterized in that
The information processing apparatus has management information for storing the priority of the log output program for each range of the amount of memory area allocated to the log output program,
The determination unit obtains the priority of the log output program according to the amount of the memory area identified by the identification unit from the management information, and the priority stored in association with the log output program in the priority information The information processing apparatus according to claim 1, wherein the degree is updated to a priority acquired from the management information.
A management program that is executed by an information processing apparatus that executes each program according to priority information indicating a correspondence relationship between a plurality of programs and the priority of executing each program,
Identify the amount of memory space allocated to the log output program that outputs log information for each program from memory to the storage device,
Determining whether the amount of the identified memory area is greater than a threshold;
When it is determined that the amount of the memory area is larger than a threshold, the priority information associated with the log output program in the priority information is updated to be higher than the priority of other programs. A management program that is executed by a device.
A management method executed by an information processing apparatus that executes each program according to priority information indicating a correspondence relationship between a plurality of programs and the priority of executing each program,
Identify the amount of memory space allocated to the log output program that outputs log information for each program from memory to the storage device,
Determining whether the amount of the identified memory area is greater than a threshold;
When it is determined that the amount of the memory area is larger than the threshold value, a process of updating the priority associated with the log output program in the priority information higher than the priority of another program is executed. Management method characterized by.