JPH09146883A - Control system for number of transaction processing tasks - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the waste of a memory and to keep the updating of a simultaneously executable task number to an irreducible minimum by deciding the simultaneously executable task number based on operation statistical information. SOLUTION: This system is constituted of a terminal equipment 1, a terminal input means 2, a transaction execution control means 3, a transaction operation statistical information control means 4, a transaction execution class operation statistical information management chart 5 for respective time bands, a timer acquisition device 6, a change means 7 for the number of transaction processing tasks, a timer informing device 8 and an application program 9. Based on the operation statistical information for the execution class of transactions for the respective time bands, the number of transaction execution tasks is automatically decided, a large number of transaction execution tasks are allocated to the transaction with a large number of processing items and a small number of transaction execution tasks are allocated to the transaction with a small number of executions depending on the time band.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transaction processing task number control system, and more particularly to a transaction processing task number control system in an online transaction processing system.

[0002]

2. Description of the Related Art In a conventional online transaction processing system, the number of transaction execution tasks is fixedly determined when the system is constructed. Alternatively, the change is fixedly decided in advance on the time series, and the number of transaction execution tasks for the transaction is increased and changed to deal with the overload only when the specific transaction is overloaded.

Usually, an application program for processing a transaction is composed of a plurality of transaction processing tasks. If the transaction processing capacity of an application program is one task, only one transaction can be processed at the same time. However, if multiple tasks are performed, multiple transactions can be processed at the same time, so the processing capacity of the application program is improved and the transaction processing waiting time is reduced. . However, when the number of transactions is small, memory is wasted because it occupies memory for multiple tasks.

[0004]

In the above-mentioned conventional transaction processing task control method, when a specific transaction seems to be overloaded, the online transaction processing system recognizes that it is overloaded, and Transaction processing performance will decrease until the number of tasks for is changed. Further, when the transaction load is light, there is a drawback that system resources such as memory are wasted until the number of transaction execution tasks is changed.

An object of the present invention is to provide a transaction processing task number control method for automatically determining the number of transaction execution tasks based on the operation statistical information of the number of concurrently executing tasks for the execution classes of transactions by time zone. It is in.

[0006]

A transaction processing task number control system according to a first aspect of the present invention is a transaction execution class operation statistics information management table for each time zone for storing operation statistics information of a transaction execution class for each time zone.
A timer acquisition device that can acquire the system time, a timer notification device that notifies the system time, a terminal input / output unit that receives a transaction from a terminal device and requests the transaction execution control unit to process, and an execution class that processes the transaction. In order to check the number of tasks, the transaction operation statistical information control means is requested to process the number of concurrently executing tasks obtained by adding a predetermined value to the number of concurrently executing tasks currently being executed in the relevant execution class in the system and this processing. A transaction execution control unit that waits for a processing completion notification of a request to control the execution of the application program, receives the execution class of the transaction and the number of concurrently executing tasks from the transaction execution control unit, and receives the transaction from the timer acquisition device. Transaction processing request occurrence time is acquired, and this occurrence time and the maximum number of concurrently executing tasks corresponding to the received execution class are acquired from the transaction execution class operation statistics information management table by time zone, and the acquired maximum simultaneous execution If the number of concurrently executing tasks received is larger than the number of tasks, the number of concurrently executing tasks is set to the maximum number of concurrently executing tasks acquired, and a task number change request notification is requested to the transaction processing task number changing unit, When a change completion notification is received, a transaction operation statistical information control unit that responds to the transaction execution control unit that is a request source with a process completion notification; and, when the change request notification is received from the transaction operation statistical information control unit, the number of concurrently executing tasks Applicable simultaneous execution from the execution class and the time zone The number of possible tasks is acquired from the transaction execution class operation statistics information management table by time zone, and if the number of simultaneous tasks is greater than the number of concurrently executable tasks acquired, the number of simultaneous tasks that can be executed simultaneously is obtained. And a transaction processing task number changing means for responding to the transaction operation statistical information control means of the request source after setting the number of concurrently executable tasks held in the system .

In the transaction processing task control method of the second invention, in the first invention, the transaction execution class operation statistical information management table for each time zone is the maximum concurrent execution average up to the previous day for each time zone and execution class. It is configured with the number of tasks, the maximum number of concurrently executable tasks on the day, and the number of concurrently executable tasks.

Further, the transaction processing task control method of the third invention is configured such that in the first invention, the timer acquisition device is provided with a notification of the transaction occurrence time or the number of operating days.

Further, in the transaction processing task control method of the fourth invention, in the first invention, the timer notifying device sends a date change notification when the date of the system is changed,
When the time in the time zone of the transaction execution class operation statistics information management table for each time zone is reached, a time notification is sent to the transaction processing task number changing means.

Further, the transaction processing task control system of the fifth invention is configured in the first invention so that the terminal input / output means notifies the class for processing the accepted transaction.

Further, in the transaction processing task control method of the sixth invention, the transaction processing task number changing means which has received the time notification in the fourth invention, the transaction execution class operation statistics by time zone in a corresponding time zone. The information management table is searched, and the number of concurrently executable tasks of all classes in the corresponding time zone is set to the number of concurrently executable tasks held in the system.

Further, in the transaction processing task control system of the seventh invention, the means for changing the number of transaction processing tasks which has received the date change notification in the fourth invention is the transaction execution class operation statistics information management table for each time zone. It is configured to notify the transaction operation statistical information control means of an initialization request notification for initializing all contents.

Further, in the transaction processing task control method of the eighth invention, the transaction operation statistical information control means which has received the initialization request notification in the seventh invention acquires the number of operating days of the system from a timer acquisition device, Calculate the average value of the maximum number of concurrent execution tasks up to the previous day for each time zone of the transaction execution class operation statistics information management table by time zone from the maximum number of concurrent execution tasks, the maximum number of concurrent execution tasks, and the number of operating days This average value is set to the maximum number of concurrently executing tasks and the number of concurrently executable tasks, and the maximum number of concurrently executing tasks is set to an initial value.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Next, one embodiment of a transaction processing task number control system of the present invention will be described with reference to the drawings.

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

As shown in FIG. 1, the transaction processing task number control system of the present embodiment has a terminal device 1, a terminal input / output means 2, a transaction execution control means 3, a transaction operation statistics information control means 4, and a time zone transaction. The execution class operation statistical information management table 5, the timer acquisition device 6, the transaction processing task number changing means 7, the timer notification device 8 and the application program 9 are included.

FIG. 2 shows an example of the transaction execution class operation statistical information management table 5 for each time zone.

Next, the operation of this embodiment will be described. First, before starting the operation of the online transaction processing system, as an initial definition of the online transaction processing system, the execution class of the transaction operating in this system is defined as the transaction execution class in the time-dependent transaction execution class operation statistics information management table 5. Define in class 52. In addition, a time interval for managing the operation statistical information of the transaction execution class for each time period is defined in the time period 51. Here, as shown in FIG. 2, a case will be described in which the type of operating transaction execution class is set to 4 (class A, class B, class C, class D) and the time interval is set to 1 hour.

In FIG. 1, the operation when a message is input from the terminal 1 of the online transaction processing system will be described.

The terminal input / output means 2 receives a message from the terminal device 1 and notifies the transaction execution control means 3 of the message.

From the acquired message, the transaction execution control means 3 indicates the number of tasks currently being executed in the system of the same execution class as the execution class that processes the transaction requested to be processed (hereinafter referred to as the number of simultaneous execution tasks).
The transaction operation statistical information control means 4 is notified of the value obtained by adding 1 to (hereinafter referred to as the required number of concurrently executing tasks).

Transaction operation statistical information control means 4
When the transaction execution control unit 3 notifies the transaction execution class and the required number of concurrently executing tasks, the timer acquisition unit 6 acquires the time at which the transaction processing request is generated (hereinafter referred to as the processing request generation time). .

Next, the transaction execution class operation statistics information management table 5 for each time period shown in FIG. 2 is searched from the acquired transaction execution class and processing request generation time,
The maximum number of concurrently executing tasks 54 (the maximum value of the number of concurrently executing tasks in the relevant time zone of the day) is acquired.

Next, the number of required simultaneous execution tasks notified from the transaction execution control unit 3 is compared with the acquired maximum number of concurrent execution tasks 54. If the required number of concurrent execution tasks is larger, the number of required concurrent execution tasks is larger. Is set to the maximum number of concurrently executing tasks 54, and control is passed to the transaction operation statistical information control means 4. When the number of required simultaneous execution tasks is smaller, the control is passed to the transaction execution control means 3 to activate the application program 9.

The above operation will be described with reference to FIG.
For example, at 11:10 transaction execution class A
Consider a case in which a transaction processing request occurs. In this case, from 11:10 to “11:
00 ”is searched, the transaction execution class A is searched from the transaction execution class 52, and the maximum number of concurrently executing tasks 54 specified by both searches is 2 of 2
0 is acquired. At this time, the number of required simultaneous execution tasks is 2
If the number is 1, the maximum concurrent task number of 20 is 21 and the required concurrent task number of 21 is compared. Therefore, since the required concurrent task number is larger, the required concurrent task number of 21 is the maximum concurrent task number. 54 is set.

Transaction operation statistical information control means 4
When the maximum concurrent task number 54 in the transaction execution class operation statistics information management table 5 by time zone is updated,
The transaction processing task number changing unit 7 is notified of a change request for the number 55 of concurrently executable tasks in the time-based transaction execution class operation statistics information management table 5.

Transaction processing task number changing means 7
When the transaction execution class operation statistics information control means 4 receives a change request notification of the number 55 of tasks that can be executed simultaneously, it acquires the time zone and the transaction execution class to be updated, and the transaction execution task operation statistics information management table by time zone 5 is retrieved and the maximum number of concurrently executable tasks 54 and the number of concurrently executable tasks 55 are acquired.

Next, the obtained maximum number of concurrently executing tasks 54 and the number of concurrently executable tasks 55 are compared. If the maximum number of concurrently executing tasks 54 is larger, the maximum number of concurrently executing tasks 54 is held in the system. In addition to setting the number of executable tasks, the maximum number of concurrently executing tasks 54 is edited to the number of concurrently executing tasks 55, and the transaction operation statistical information control means 4 is notified of the completion of the change of the number of concurrently executing tasks.

When the maximum number of concurrently executing tasks 54 is smaller, the transaction operation statistical information control means 4 is only notified of the completion of the change of the number of concurrently executing tasks.

In FIG. 2, for example, the time zone "11: 0
Consider a case where the maximum number of simultaneous executions of the task having the transaction execution class A in "0" is added to 21. Transaction processing task number changing means 7
When receiving the change request notification of the number of concurrently executable tasks from the transaction operation statistical information changing means 4, the time-dependent transaction execution task operation statistical information management table 5
To retrieve 21 of the maximum number of concurrently executable tasks 54 and 20 of the number of concurrently executable tasks 55.

21 of the maximum number of concurrently executing tasks acquired next
And the number of concurrently executable tasks is 20. In this case, the maximum number of concurrently executable tasks is larger, so the number of concurrently executable tasks held by the system is changed to 21, and 20 is updated to 21.

Next, when the transaction operation statistics information control means 4 receives the change completion notification of the number of concurrently executable tasks from the transaction processing task number changing means 7, it notifies the transaction execution control means 3 of the processing completion.

When the transaction execution control means 3 receives the processing completion notification from the transaction operation statistical information control means 4, the transaction execution control means 3 activates the application program 9 for processing the transaction.

The timer notification device 8 notifies the transaction processing task number changing means 7 of the time at a constant time interval defined by the initial definition of the online transaction processing system described above (the constant time interval here is:
The time in the transaction execution class operation statistics information management table 5 by time zone is shown).

Transaction processing task number changing means 7
When the time notification is received from the timer notification device 8,
The execution class of the transaction that operates in the online transaction system is acquired from the time zone transaction execution task operation statistics information management table 5, and the time zone 51 is searched at the time received by the timer notification device 8,
The number 55 of concurrently executable tasks in the corresponding time zone is acquired, and the number 55 of concurrently executable row tasks is set to the number of concurrently executable tasks held in the system.

Similarly, the number 55 of concurrently executable row tasks of all transaction execution classes in the relevant time zone is set to the number of concurrently executable tasks held in the system.

Consider the transaction execution class A in FIG. For example, the timer notification device 8 to 1
When 2:00 is notified to the transaction processing task number changing means 7, the transaction processing task number changing means 7 acquires 40 of the simultaneously executable task number 55. Next, 40 is set to the number of concurrently executing tasks held in the system.

When the transaction processing task number changing means 7 receives the date change notification from the timer notifying device 8, the transaction operation statistical information control means 4 gives the transaction execution class operation statistical information management table 5 for each time zone.
Initialization request notification is performed.

Transaction operation statistical information control means 4
Receives the initialization request notification, receives the number of operating days of the system from the timer acquisition device 6, and from the maximum number of concurrently executing tasks 53, the maximum number of concurrently executing tasks 54, and the number of operating days, the transaction execution class operation statistics by time zone. For each applicable time period in the information management table 5, calculate the average value of the maximum average number of concurrently executing tasks up to the previous day, and set this average value in the maximum average number of concurrently executing tasks 53 and the number of concurrently executable tasks 55. 0 is set to the number of concurrently executing tasks 54.

Next, a calculation formula for obtaining the maximum number of concurrently executed tasks up to the previous day will be shown. (Maximum number of concurrently executed tasks x
Calculated as (operating days-1) + maximum number of concurrently executing tasks) / operating days.

In FIG. 2, for example, consider the case where the number of operating days is 6 days, the time zone is 10:00, and the transaction execution class is A. In this case. From the maximum concurrent execution average task number 53 of 10 and the maximum concurrent execution task number 5 of 5, the following is obtained. (10 (6-1) +
5) / 6 = 9, and the maximum number of concurrently executing tasks 53 and the number of concurrently executable tasks 55 are set to 9, and the maximum number of concurrently executing tasks 54 is set to 0.

In the above-described embodiment, the number 55 of concurrently executable tasks for the current day is calculated from the maximum average number of concurrently executable tasks 53 up to the previous day. When the number of concurrent tasks that can be held in the system is updated when the number exceeds 55, the maximum number of concurrent tasks that can be held in the system until the previous day is the maximum for a system that emphasizes waiting time until transaction processing starts while updating the number of concurrent tasks that can be held in the system. An embodiment is conceivable in which the value or a value larger than the maximum average number of concurrently executing tasks 53 is set as the number of concurrently executable tasks 55 on the day.

Also, in the case of a system that emphasizes prevention of memory consumption by executable tasks that are not being executed, an embodiment in which a value smaller than the number 53 of concurrently executable tasks up to the previous day is set in the number 55 of concurrently executable tasks of the day is also possible. Conceivable.

[0044]

As described above, according to the present invention, the number of transaction execution tasks is automatically determined based on the operation statistical information of the number of concurrently executing tasks for the execution classes of transactions for each time zone, and It is possible to improve the operability of the online transaction processing system by allocating a large number of transaction execution tasks for transactions with a large number of transactions and a small number of transaction execution tasks for transactions with a small number of transactions. That is, in order to determine the number of tasks that can be executed simultaneously based on operational statistics,
Memory consumption due to unnecessary tasks is prevented, and the number of concurrently executable tasks is updated to the minimum when the number of concurrently executing tasks exceeds the maximum number of concurrently executing tasks.

Further, even when the system operation mode is changed and the transaction processing request amount for each time zone is changed, the online transaction processing system is stopped (automatically) without requiring intervention by an operator operation. In this way, the task waiting state of the transaction is eliminated and the memory consumption by the free task is prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a transaction processing task control system of the present invention.

FIG. 2 is a diagram showing an example of a transaction execution class statistical information management table for each time zone in FIG. 1 of the present embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 terminal device 2 terminal input / output means 3 transaction execution control means 4 transaction operation statistical information control means 5 transaction execution class operation statistical information management table by time zone 6 timer acquisition device 7 transaction processing task number changing means 8 timer notification device 9 application program 51 Hours 52 Transaction Execution Class 53 Maximum Number of Simultaneous Execution Tasks 54 Maximum Number of Simultaneous Execution Tasks 55 Number of Simultaneous Execution Tasks

Claims (8)

[Claims] 1. A transaction processing task number control method for controlling the number of tasks of an application program that receives a transaction from a terminal device connected by a communication line and stores the transaction execution class statistical information for each time period. A time-dependent transaction execution class operation statistics information management table, a timer acquisition device that can acquire the system time, a timer notification device that notifies the system time, and a transaction request from the terminal device that receives transactions from the transaction execution control means. The terminal input / output means for performing the transaction, and the number of simultaneous execution tasks for which a predetermined value is added to the number of simultaneous execution tasks currently being executed in the execution class in the system in order to check the number of tasks of the execution class that processes the transaction, and A transaction execution control means for requesting processing to the transaction operation statistical information control means with a line class and waiting for a processing completion notification of the processing request to control the execution of the application program; and the execution class of the transaction from the transaction execution control means. And the number of concurrently executing tasks, the time when the transaction request for processing the transaction is generated from the timer acquisition device, and the time of occurrence and the maximum number of concurrently executing tasks corresponding to the received execution class are the transaction execution classes by time zone. Obtained from the operation statistics information management table, if the number of concurrent execution tasks received is larger than the maximum number of concurrent execution tasks obtained, set the number of concurrent execution tasks to the maximum number of concurrent execution tasks acquired Transaction request change notification Transaction processing task number changing means, and when a change completion notification is received, a transaction completion statistical information control means for responding to the transaction execution control means as a request source when the change completion notification is received; When the change request notification is received, the corresponding concurrently executable task number is acquired from the concurrent execution task number, the execution class, and the time period from the transaction execution class operation statistics information management table for each time period, and the concurrent execution task number is obtained. If is larger than the number of concurrently executable tasks acquired, after updating the number of concurrently executable tasks to the number of concurrently executable tasks acquired and setting the number of concurrently executable tasks held in the system, a change completion notification is sent to the request source. A transaction that responds to the transaction statistical information control means. Transaction processing task number control method, characterized in that it comprises a processing task number change means. 2. The transaction execution class operation statistics information management table for each time period shows the maximum number of concurrently executed tasks up to the previous day, the maximum number of concurrently executed tasks of the current day, and the number of concurrently executable tasks for each time period and execution class. The transaction processing task number control system according to claim 1, further comprising: 3. The transaction processing task number control method according to claim 1, wherein the timer acquisition device notifies a transaction occurrence time or an operation day number. 4. The timer notification device changes the number of transaction processing tasks when the system date is changed, and when the time reaches the time in the time zone of the transaction execution class operation statistics information management table for each time zone, the number of transaction processing tasks is changed. The method for controlling the number of transaction processing tasks according to claim 1, wherein the means is notified. 5. The transaction processing task number control system according to claim 1, wherein said terminal input / output means notifies a class for processing the accepted transaction. 6. The transaction processing task number changing means, which has received the time notification, searches the transaction execution class operation statistics information management table for each time zone in the corresponding time zone and is capable of performing the simultaneous execution of all classes in the corresponding time zone. 5. The transaction processing task number control method according to claim 4, wherein the number of tasks is set to the number of concurrently executable tasks held in the system. 7. The transaction processing task number changing means, which has received the date change notification, sends an initialization request notification for initializing the entire contents of the time zone-specific transaction execution class operation statistics information management table to the transaction operation statistics information control means. 5. The method for controlling the number of transaction processing tasks according to claim 4, wherein the number is notified to the user. 8. The transaction operation statistical information control means that has received the initialization request notification acquires the number of operating days of the system from the timer acquisition device, and from the maximum number of concurrently executing tasks, the maximum number of concurrently executing tasks, and the number of operating days. , The average value of the maximum average number of simultaneous execution tasks up to the previous day is calculated for each time zone in the transaction execution class operation statistics information management table by time zone, and this average value is calculated as the maximum average number of concurrent execution tasks and concurrent execution tasks. 8. The method for controlling the number of transaction processing tasks according to claim 7, wherein the number is set to a number, and an initial value is set to the maximum number of concurrently executing tasks.