JP2010146382A - Load balancing system, load balancing method and load balancing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve application processing with effective use of system resources. <P>SOLUTION: A load balancing system has an application execution means 111 for executing applications in descending order of priority set thereto and processing load measurement means 113 and 114 for measuring processing loads on processing resources used in executing the applications. The load balancing system includes: a resource-based usage monitoring means 115 for setting processing resources which are related to the processing of each application as an overall resource part 160 and setting the processing resources other than the overall processing resources as a partial resource part 170, and periodically monitoring the resource usage of each of the overall resource part 160 and partial resource part 170; and an application execution suppression means 112 for suppressing the application execution related to the partial processing resource part when the resource usage of the partial resource part 170 is higher than a preset value. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technology for effectively using resources at the time of business execution in a computer system.

  In order to prevent the processing capacity from reaching the limit due to an increase in the load on the computer system or an excess of work and slowing down of the process, execution of the work is restricted according to the system load.

However, in order to prevent the situation where the processing capacity of the computer system as a whole decreases due to an increase in the processing capacity of the computer system due to excess processing operations, etc. To restrict the execution of business.
However, by restricting the work to be processed based on the load of each system resource such as CPU (Central Processing Unit) and DB (Data Base), it is possible to process both high and low importance work uniformly. There was the inconvenience of being restricted.

As related information, resources and priorities can be determined by managing the system load status for each resource and determining whether or not the task can be executed based on the result of comparing the load status with a threshold based on the task priority. A method for restricting business operations according to the requirements is disclosed (Patent Document 1).
JP 10-027167

  However, in the above related technology, business processing is executed and business is restricted according to a preset priority, so only a part of system resources is used for each business depending on the characteristics of resource usage for business processing. As a result, the processing speed is slowed down, and the execution of the business is restricted even though there is a margin in the processing limit.

[Object of invention]
An object of the present invention is to provide a load distribution system, a load distribution method, and a load distribution program that improve the inconveniences of the related art and perform business processing that effectively uses system resources.

  In order to achieve the above object, a load distribution system according to the present invention includes business priority setting means for setting priority for each requested business, and execution processing from a business with high priority based on the priority. And a processing load measuring means for measuring a processing load of a processing resource used during the execution processing of the business, wherein the processing load of the processing resource is preset. A job execution suppression unit that performs control to suppress the execution process performed by the job execution processing unit from the low priority job, and a process related to all the tasks among the processing resources. Resource division setting means for setting a resource as an overall resource part and setting a processing resource other than the overall processing resource as a partial resource part among the processing resources; Resource usage rate monitoring means for periodically monitoring the resource usage rate in each of the overall resource part and the partial resource part, wherein the business execution suppression means uses a resource usage rate in the partial resource part from a preset value When the cost is high, the partial processing resource unit is configured to include a partial processing restriction function that suppresses the execution processing of the business.

  A business execution processing means for executing the requested business, a processing load measuring means for measuring a processing load of a processing resource used during the execution processing, and processing of all the business among the processing resources A load distribution system including a resource division setting unit for setting a processing resource as a whole resource part and a partial resource part as a processing resource other than the resource part, wherein the load distribution method controls the processing load, Priorities are set for each requested task, the processing load of the processing resources used during the execution processing of the task is measured, and execution processing is started from the task with higher priority based on the processing load and the priority. When the processing load is higher than a preset value, the execution processing performed by the job execution processing means is suppressed from the job with the lower priority, and the partial processing resource It is characterized by suppressing the execution of such services to.

  Furthermore, the load distribution program according to the present invention includes a business execution processing unit that performs execution processing of a requested business, a processing load measurement unit that measures a processing load of a processing resource used during the execution processing, and the processing resource A load distribution system comprising: a resource division setting unit configured to set a processing resource for processing of each of the operations as a whole resource unit and a partial resource unit which is a processing resource other than the processing resource; A load balancing program for controlling the priority, a priority setting function for setting a priority for each requested business, and a business execution function for executing an execution process from a business with a high priority based on the priority And execution processing performed by the business execution processing means when the processing load of the processing resource used during the execution processing of the business is measured and the processing load is higher than a preset value. And suppressing execution suppression function execution process of the operation according to the partial processing resource unit suppresses from the lower priority operations, is characterized by causing a computer to execute the load balancing distributed system.

  Since the present invention is configured and functions as described above, according to this, the processing resources related to the processing of all the operations among the processing resources are set as the overall resource section, and the processing resources other than the overall processing resources are set. Means for setting the processing resources of the resource as a partial resource part, means for periodically monitoring the resource usage rate in each of the overall resource part and the partial resource part, and the resource usage rate in the partial resource part is higher than a preset value In addition, when the processing load of the processing resource is higher than a preset value, the execution processing performed by the job execution processing means is suppressed from the low priority job, and the job execution processing for the partial processing resource unit Load balancing system and load balancing method for performing business processing using system resources effectively And it is possible to provide a load distribution program.

[Embodiment]
Next, the basic content of the load distribution system according to the embodiment of the present invention will be described.

  As shown in FIG. 1, the load distribution system 1 is a computer system including resources (including a CPU, a memory, a bus, and the like) used for execution processing of a requested job. Thus, the business execution nodes 110, 120, and 130 that execute the business processes are received, and the business requests sent from the external system via the communication line are accepted, and the business execution nodes (110, 120, and 130 are collectively called “ The configuration includes a communication node 140 that relays and forwards requests to a business execution node, and an internal drive node 150 that issues a business request generated inside the load distribution system 1 to the business execution node. Yes.

The system resources used for executing the business in the load balancing system 1 are composed of an overall resource 160 and a distributed resource 170.
Here, the overall resource 160 indicates a resource that is used in all the operations to be executed, and the distributed resource 170 indicates a resource that is used only partially for each operation.

Note that the setting method (distribution method) of the distributed resource 170 differs depending on the installation purpose of the load distribution system, which is a computer system, the purpose of the requested business, and the content.
For example, it may be a distributed resource to which resources used for each business are allocated, or a distributed resource to which resources are allocated based on the type of data to be processed.

  The business execution node 110 is a business execution unit 111 that performs execution processing of a business requested from the communication node 140 or the internal drive node 150, and a business that manages the progress status and stay status of the business executed by the business execution unit 111. The stay status management unit 112, the overall resource load status management unit 113 that monitors the load status of the overall resource 160, the distributed resource load status management unit 114 that monitors the distributed resource 170, the overall resource 160, and the distributed resource 170 Load status management information 115 that stores and holds a load status management table 200 in which the load status is recorded.

  As described above, the business execution unit 111 has a business execution processing function for executing a business requested from the communication node 140 or the internal drive node 150 as an online transaction. In the execution process at that time, the overall resource 160 and the distributed resource 170 are used as necessary.

The business residence status management unit 112 acquires the business residence status of the business executed by the business execution unit 111 and updates the business residence status 201 of the load status management information 115 (retention status update function).
Further, the business residence status management unit 112 performs a control for suppressing the business execution processing related to the distributed resource in the business execution unit 111 when the business load status becomes higher than the preset value of the system resource load. It has a limit control function.

  Thereby, even when the load of the system resource becomes high, only the processing of the business related to the distributed resource 170 is limited, and the influence on the resource due to the increase in the processing load (for example, the processing operation speed decreases) Can be localized to a specific distributed resource.

The overall resource load status management unit 113 periodically checks the load status of the overall resource 160 and updates the overall resource load status 203 of the load status management unit 115.
The distributed resource load status management means 114 periodically checks the load status of the distributed resource 170 and updates the distributed resource load status 202 of the load status management information 115 according to the type of the distributed resource.

  An example of the load status management table 200 stored in the load status management means 115 is shown in FIG. The load information management information 200 manages, for each business, a business residence status 201, a load status 202 for each type of distributed resource being used, and a load status 203 for all resources. This is information for identifying 204.

The communication node 140 receives a work sent from an external system, assigns a priority to each work, a work request accepting unit 141, and a load status managing means that shows a load situation concerning the work accepted by the work request accepting unit 141 The business load acquisition unit 142 acquired from 115, the business execution availability determination unit 143 that determines whether or not to execute a business based on the acquired load status, and the business determined to be executable as the business execution node It includes job distribution means 144 for transferring, and job priority management means 145 in which an upper limit threshold value of a load set in advance according to the priority assigned to the job is stored. It is assumed that business priority management information in which priorities and thresholds for each business are registered in advance is stored.

  As a result, when a request from the external system is received by the business request reception unit 141, the business load acquisition unit 142 acquires the load of the business from the load status management information 115, and the business execution availability determination unit 143 acquires the acquired load. And the business priority management information are compared to determine whether or not the business can be executed. If the business can be executed, the business distribution unit 144 determines that the business request is appropriate among the business execution nodes 110, 120, and 130. Relay to the correct node.

The internal drive node 150 includes an internal business drive unit 151 that automatically issues a business request in accordance with a request or schedule from an operator of the internal drive node 150, and a load status applied to the business issued by the internal business drive unit 151 A job load acquisition unit 152 for acquiring a job status from the load status management unit 115, a job execution availability determination unit 153 for determining whether to execute a job based on the acquired load status, and a job determined to be executable A job distribution unit 154 for transferring the job to the job execution node, and a job priority management unit 155 in which an upper limit threshold value of a load set in advance according to the priority assigned to the job is stored. The priority management unit 155 stores business priority management information in which priorities and threshold values for each business are registered in advance.

A business load acquisition unit 152, a business execution availability determination unit 153, a business distribution unit 154, and business priority management information 155 are included. In the business priority management information 155, priority and threshold values for each business are registered in advance. The internal work driving means 151 obtains the work load from the load status management information 115, and the work execution availability determination means 153 compares the obtained load with the work priority management information 155. It is determined whether or not the business can be executed. If the business can be executed, the business distribution unit 154 issues a business request to an appropriate node among the business execution nodes 110, 120, and 130.

[Description of Operation of Embodiment]
Here, an outline of the operation of the load distribution system according to the embodiment will be described.
The business request reception unit 141 sets priorities for each requested business (priority setting function), and the load status management units 113 and 114 are overall resources 160 that are processing resources used during business execution processing. Then, the processing load of the distributed resource 170 is measured, and the business execution unit 111 executes the processing from the business with high priority (business execution function). Here, when the processing load is higher than a preset value, the business residence status management unit 112 suppresses the execution processing performed by the business execution processing unit 111 from the low-priority business, and the partial processing resource unit Suppress the execution process of the work related to (execution process suppression function).

  The priority setting function, the business execution function, and the execution process suppression function may be set so that the execution content is programmed and executed by a computer provided in the business execution node.

Next, the operation of the load distribution system according to the embodiment will be described in detail.
First, the business execution node 110 receives a business execution request sent from the communication node 140 or the internal drive node 150 and executes the business (business execution function).
Here, the business execution means 111 calculates the degree of processing that can be executed in parallel (simultaneous execution) within the business for the (execution) business of the above business execution request as the simultaneous execution multiplicity, Based on this, the number of tasks being executed and waiting to be executed are calculated. Next, the task execution unit 111 notifies the task stop status management unit 112 of the calculated number of tasks being executed and waiting to be executed as a task execution progress status (progress status notification function).

The business suspension status management unit 112 registers the notified execution progress information in the business residence status (item) 201 of the load status management table 200 set in the load status management unit 115 and newly executes the execution progress status. Is acquired, the load status management table 200 is updated (FIG. 2).
Further, the business suspension status management unit 112 suppresses business execution processing performed by the distributed resource in the business execution unit 111 when the system resource load indicated by the business load status becomes higher than a preset value (business Limit control function).

  As a result, it is possible to suppress business execution that is closed to the scope of business that depends on a specific distributed resource. For this reason, it is possible to process a task related to the entire resource (a task not related to the distributed resource) up to the upper limit within the range of the processing limit.

On the other hand, the overall resource load status management unit 113 periodically monitors the load status of the overall resource 160.
Here, for example, when the load status (for example, the usage rate) of the overall resource 160 has changed, the overall resource load status management unit 113 acquires the usage rate of the overall resource 160 and loads the load distribution status management unit. The overall resource load status item 203 of the load status management table 200 stored in 115 is updated.

At this time, the distributed resource load status management means 114 also periodically monitors the load status of the distributed resources 170 (distributed resources A, B, C).
Here, for example, when the load distribution status (for example, usage rate) of the partial resource 170 changes, the distributed resource load status management unit 114 calculates the load status for each type (A, B, C) of the distributed resource 170. Acquire and update the content of the distributed resource load status item 202 in the load status management table 200 (FIG. 2).

On the other hand, the business request accepting unit 141 of the communication node 140 accepts a business request from an external system connected via a communication line, and “request type” indicating the type of business request included in the business request. And a business priority is set based on the “used resource determination key” indicating the resource used for the business execution of the business request.
Further, the business request accepting unit 141 determines a resource to be used for executing the business of the business request.

Next, the load information on the resources (including total resources and distributed resources) from the load status management unit 115 of the job execution node 110 by the job load acquisition unit 142 based on the set job priority and used resources. (Load status information acquisition function).
At this time, the business load means 142 is also set from the load status management means 125 of the business execution node 120 and the load status management means 135 of the business execution node 130 corresponding to the load status management means 115 of the business execution node 110. It is assumed that load status information relating to the assigned resources (including the total resources and the distributed resources) is acquired.

  Next, the business execution availability determination unit 143 acquires threshold information corresponding to the set business priority from the business priority management unit 145, and the threshold information and the load status information acquired by the business load acquisition unit 142. And compare. Here, the business execution availability determination unit 143 determines whether the determined use resource is in a high load state or a normal state.

  Here, if the threshold information is smaller (if the load status information is larger), it is determined that the resource used is in a high load state, and if the threshold information is larger (if the load status information is smaller) ), It is determined as a normal state.

  At this time, if any of the business execution nodes 110, 120, and 130 is in a normal load state, the business request can be transferred to any of the business execution nodes 110, 120, and 130 (it does not matter). Therefore, the job distribution unit 144 selects a transfer destination job execution node and transfers a job request based on an existing selection rule such as round robin.

On the other hand, when it is determined that all of the business execution nodes 110, 120, and 130 are in a high load state, the business distribution unit 144 discards the business request without executing the transfer of the business request. Alternatively, an error response may be set to be returned to an external system that is a business request transmission source.
In addition, when the normal load state and the high load state coexist, the execution process of the business request may be suspended until the next preset schedule timing.

  As a result, even when the load of the system resource in the load distribution system 1 is increased, the control that restricts only the execution processing of the distributed resource 170 that performs processing that affects only a part of the business (related to only part of the business). By performing the above, it is possible to localize the influence due to the load of system resources.

Next, the operation of the internal drive node 150 will be described.
In the internal drive node 150, for example, a business request input by an operator (user) of the internal drive node 150 or a business request generated in accordance with a schedule by a preset business request generation unit or the like is It shall be issued to the means 151.

  The internal business drive unit 151 of the communication node 150 receives the issued business request, and is used for executing the business request according to the “request type” indicating the type of the business request included in the business request. The business priority is set based on the “used resource determination key” indicating the resource. Further, the internal task driving unit 151 determines a resource to be used for executing the task requested by the task.

Next, the load information on the resources (including total resources and distributed resources) from the load status management unit 115 of the job execution node 110 by the job load acquisition unit 152 based on the set job priority and used resources. (Load status information acquisition function).
At this time, the business load means 152 is also set from the load status management means 125 of the business execution node 120 and the load status management means 135 of the business execution node 130 corresponding to the load status management means 115 of the business execution node 110. It is assumed that load status information relating to the assigned resources (including the total resources and the distributed resources) is acquired.

  Next, the business execution availability determination unit 153 obtains threshold information corresponding to the set business priority from the business priority management unit 155, and the threshold information and the load status information obtained by the business load acquisition unit 152. And compare. Here, the business execution availability determination unit 153 determines whether the determined use resource is in a high load state or a normal state.

  Here, if the threshold information is larger (if the load status information is larger), the used resource is determined to be in a high load state, and if the threshold information is smaller (if the load status information is larger) ), It is determined as a normal state.

  At this time, if any of the business execution nodes 110, 120, and 130 is in a normal load state, the business request can be transferred to any of the business execution nodes 110, 120, and 130 (it does not matter). Therefore, the job distribution means 154 selects a transfer destination job execution node and transfers a job request based on an existing selection rule such as round robin.

On the other hand, when it is determined that all of the business execution nodes 110, 120, and 130 are in a high load state, the business distribution unit 154 discards the business request without executing the transfer of the business request.
Alternatively, an error response may be set to be returned to an external system that is a business request transmission source. In addition, when the normal load state and the high load state coexist, the execution process of the business request may be suspended until the next preset schedule timing.

As described above, in this embodiment, when the load of only the resource that does not affect the entire system is high, only the work related to this resource (distributed resource) is limited (suppressed), so that it is not related to the distributed resource. It is to be able to process business to the limit of the processing limit.
Further, even when a request exceeding the processing limit of the system is made, it is possible to process only a request with a high priority up to the limit of the processing limit by limiting requests with a low priority.

  Furthermore, in this embodiment, the system resource for executing processing is divided into a partial resource that affects only a part of the business and an entire resource that affects the entire business. Therefore, even when the load of the system resource increases, the partial resource By limiting only the tasks related to, the impact of the load can be localized.

  The present invention can be applied to an application such as an online system of a financial institution that needs to process a large amount of business at the same time and requires high processing performance.

1 is a schematic block diagram illustrating an embodiment of a load distribution system according to the present invention. It is explanatory drawing which shows an example of the load condition management table in the load distribution system disclosed in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Load distribution system 110, 120, 130 Business execution node 140 Communication node 150 Internal drive node 160 Whole resource (whole resource part)
170 Distributed resource (partial resource part)
111 business execution means (business execution processing means)
112 Business residence status management means (business execution suppression means)
115 Load status management means

Claims (5)

Business priority setting means for setting a priority for each requested business, business execution processing means for performing execution processing from a high priority business based on the priority, and used during the execution processing of the business A load distribution system comprising a processing load measuring means for measuring a processing load of a processing resource,
When the processing load of the processing resource is higher than a preset value, business execution suppression means for controlling the execution processing performed by the business execution processing means from the low priority business,
A resource division setting unit that sets processing resources for processing of all the operations among the processing resources as an overall resource unit, and sets processing resources other than the overall processing resource among the processing resources as a partial resource unit; ,
Resource usage rate monitoring means for periodically monitoring the resource usage rate in each of the set overall resource part and partial resource part,
The business execution suppression means includes a partial processing restriction function that suppresses a business execution process for the partial processing resource unit when a resource usage rate in the partial resource unit is higher than a preset value. Load balancing system. The load distribution system according to claim 1, wherein
The load distribution system, wherein the resource division setting means includes a business distribution setting function for setting a partial resource unit that uses the distributed resource unit according to the requested processing content of each business. The load distribution system according to claim 1, wherein
The resource usage rate monitoring means has a type usage rate calculation function for calculating a resource usage rate for each type of the partial resource unit, and
The load distribution system, wherein the business priority setting means includes a resource type distribution function for distributing the business to the partial resource unit based on the type. A business execution processing means for executing the requested business, a processing load measuring means for measuring a processing load of a processing resource used during the execution processing, and processing of all the business among the processing resources A load distribution system including a resource division setting unit for setting a processing resource as a whole resource part and a partial resource part as a processing resource other than the resource part, wherein the load distribution method controls the processing load,
Priorities are set for each requested task, the processing load of the processing resources used during the execution processing of the task is measured, and execution processing is started from the task with higher priority based on the processing load and the priority. When the processing load is higher than a preset value, the execution processing performed by the job execution processing means is suppressed from the low priority job, and the job execution processing for the partial processing resource unit is suppressed. A load balancing method characterized by suppressing the load. A business execution processing means for executing the requested business, a processing load measuring means for measuring a processing load of a processing resource used during the execution processing, and processing of all the business among the processing resources A load distribution system comprising a resource division setting unit for setting a processing resource as an overall resource unit and a partial resource unit as a processing resource other than that, and is a load distribution distribution program for controlling the processing load. And
A priority setting function for setting a priority for each requested business, a business execution function for performing execution processing from a business with high priority based on the priority, and a processing resource used during the execution processing of the business When the processing load is measured and the processing load is higher than a preset value, the execution processing performed by the job execution processing means is suppressed from the low priority job, and the job execution on the partial processing resource unit is executed. A load distribution program that causes a computer of the load distribution and distribution system to execute an execution processing suppression function that suppresses processing.

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