Method and system for managing load balancing in system

• US 20040193674A1
• Filed: 11/25/2003
• Published: 09/30/2004
• Est. Priority Date: 03/31/2003
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Suzuki, Tomomi, Noda, Yusuke, Kurosawa, Masahiro
• Granted Patent: US 7,672,863 B2
• Time in Patent Office: Days
• US Class Current: 709/201
• CPC Class Codes: G06F 9/5083 Techniques for rebalancing the load in a distributed system
• CPC Class Codes: G06Q 10/06315 Needs-based resource requirements planning or analysis
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1012 based on compliance of requirements or conditions with available server resources

Abstract

A load balancing method comprises the steps of: registering a business configuration definition of each business service including a schedule of the business service with a business configuration management repository; storing at least a service level objective of each business service; storing information on performance of each information processing module; acquiring the registered schedule and the stored service level objective of the designated business service; partitioning the schedule of the designated business service into a plurality of partial schedules according to the acquired service level objective; selecting one or more information processing modules whose performance information stored in the performance management table satisfies the service level objective in each partial schedule; and reserving the information processing modules selected for the partial schedules as information processing modules for executing the designated business service in the schedule. A partition fulfilling agreements on service quality can be constructed dynamically.

Claims

1. A load balancing method comprising the steps of:

registering a business configuration definition of each business service including a schedule of the business service with a business configuration management repository;

storing at least a service level objective of each business service;

storing information on performance of each information processing module in a performance management table;

reading the schedule of a designated business service from the business configuration definition registered with the business configuration management repository;

acquiring the stored service level objective of the designated business service;

partitioning the schedule of the designated business service read from the business configuration definition into a plurality of partial schedules according to the acquired service level objective;

selecting one or more information processing modules whose performance information stored in the performance management table satisfies the service level objective in each partial schedule; and

reserving the information processing modules selected satisfying the service level objective in the partial schedules as information processing modules for executing the designated business service in the schedule.

2. The load balancing method according to claim 1, wherein the partitioning of the schedule read from the business configuration definition is conducted in units of spans in each of which the service level objective remains constant.

3. The load balancing method according to claim 1, wherein the reservation of each information processing module for executing the designated business service is made omitting a step in a start process or finish process of the designated business service that coincides with a step of a business service that has already been reserved with the information processing module.

4. The load balancing method according to claim 3, wherein the omission is realized by:

previously registering the business configuration definition that includes flag information indicating contents of the start process and finish process of each business service with the business configuration management repository, and

comparing the flag information of the already-reserved business service with the flag information of the designated business service.

5. The load balancing method according to claim 1, wherein the reservation of the information processing modules for executing the designated business service is made omitting a particular step in a start process or finish process of the designated business service if a step capable of substituting for the particular step has not been omitted.

6. The load balancing method according to claim 1, wherein the reservation of the information processing modules for executing the designated business service is made omitting a particular step in a start process or finish process of the designated business service if the omission of the particular step has no effect on already-reserved business services.

7. The load balancing method according to claim 1, wherein the reservation of the information processing modules for executing the designated business service is made avoiding omission of a particular step in a start process or finish process of the designated business service if flag information of the particular step exists in flag information of a start process of a subsequent already-reserved business service.

8. The load balancing method according to claim 1, wherein an information processing module that has already been reserved by another business service is diverted into the designated business service when it is impossible to fully reserve the information processing modules for executing the designated business service.

9. A load balancing system comprising:

a business configuration management processing unit which registers a business configuration definition of each business service including a schedule of the business service with a business configuration management repository;

an SLO management processing unit which stores at least a service level objective of each business service in an SLO management table;

a performance management processing unit which stores information on performance of each information processing module in a performance management table; and

a reservation management processing unit which reads the schedule of a designated business service from the business configuration definition registered with the business configuration management repository, acquires the stored service level objective of the designated business service, partitions the schedule of the designated business service read from the business configuration definition into a plurality of partial schedules according to the acquired service level objective, selects one or more information processing modules whose performance information stored in the performance management table satisfies the service level objective in each partial schedule, and reserves the information processing modules selected for the partial schedules as information processing modules for executing the designated business service in the schedule.

10. The load balancing system according to claim 9, wherein the reservation management processing unit conducts the partitioning of the schedule in units of spans in each of which the service level objective remains constant.

11. The load balancing system according to claim 9, wherein the reservation management processing unit makes the reservation of each information processing module for executing the designated business service omitting a step in a start process or finish process of the designated business service that coincides with a step of a business service that has already been reserved with the information processing module.

12. The load balancing system according to claim 11, wherein the reservation management processing unit realizes the omission by:

previously registering the business configuration definition that includes flag information indicating contents of the start process and finish process of each business service with the business configuration management repository, and

comparing the flag information of the already-reserved business service with the flag information of the designated business service.

13. The load balancing system according to claim 9, wherein the reservation management processing unit makes the reservation of the information processing modules for executing the designated business service omitting a particular step in a start process or finish process of the designated business service if a step capable of substituting for the particular step has not been omitted.

14. The load balancing system according to claim 9, wherein the reservation management processing unit makes the reservation of the information processing modules for executing the designated business service omitting a particular step in a start process or finish process of the designated business service if the omission of the particular step has no effect on already-reserved business services.

15. The load balancing system according to claim 9, wherein the reservation management processing unit makes the reservation of the information processing modules for executing the designated business service avoiding omission of a particular step in a start process or finish process of the designated business service if flag information of the particular step exists in flag information of a start process of a subsequent already-reserved business service.

16. The load balancing system according to claim 9, wherein the reservation management processing unit diverts an information processing module that has already been reserved by another business service into the designated business service when it is impossible to fully reserve the information processing modules for executing the designated business service.

17. A program for instructing a computer to function as:

a business configuration management processing unit which registers a business configuration definition of each business service including a schedule of the business service with a business configuration management repository;

an SLO management processing unit which stores at least a service level objective of each business service in an SLO management table;

a performance management processing unit which stores information on performance of each information processing module in a performance management table; and

a reservation management processing unit which reads the schedule of a designated business. service from the business configuration definition registered with the business configuration management repository, acquires the stored service level objective of the designated business service, partitions the schedule of the designated business service read from the business configuration definition into a plurality of partial schedules according to the acquired service level objective, selects one or more information processing modules whose performance information stored in the performance management table satisfies the service level objective in each partial schedule, and reserves the information processing modules selected for the partial schedules as information processing modules for executing the designated business service in the schedule.