Method and system for controlling computer in system

• US 20060294239A1
• Filed: 03/02/2006
• Published: 12/28/2006
• Est. Priority Date: 06/24/2005
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Ishida, Takaichi
• Granted Patent: US 7,734,782 B2
• Time in Patent Office: Days
• US Class Current: 709/226
• CPC Class Codes: G06F 2209/5022 Workload threshold
• CPC Class Codes: G06F 2209/508 Monitor
• CPC Class Codes: G06F 9/5016 the resource being the memory
• CPC Class Codes: G06F 9/505 considering the load

Abstract

A server computer is communicably connected to a client computer and has a first and a second execution environment for executing a program for performing information processing in accordance with a processing request transmitted from the client computer. The server computer stores a condition for judging whether a predetermined processing efficiency can be assured for the information processing performed by the first execution environment according to the processing request. The server computer receives the processing request transmitted from the client computer. The server computer judges whether the predetermined processing efficiency can be assured according to the condition. The server computer allocates the processing request to the second execution environment if it is judged that the predetermined efficiency cannot be assured.

Claims

1. An information processing method in a server computer communicably connected to a client computer, for executing a program for performing information processing in accordance with a processing request transmitted from the client computer, comprising the steps of:

storing a condition for judging whether a predetermined processing efficiency can be assured for the information processing performed by a first execution environment according to the processing request,

receiving the processing request transmitted from the client computer,

judging whether the predetermined processing efficiency can be assured according to the condition, and

allocating the processing request to a second execution environment if it is judged that the predetermined efficiency cannot be assured.

2. The information processing method as claimed in claim 1, wherein the condition is specified based on a resource currently allocated to the first execution environment.

3. The information processing method as claimed in claim 1, wherein the condition indicates a predetermined threshold value, when at least one of the size of memory storage area, the number of file descriptors, and the number of exclusive locks for the resource which are currently allocated to the first execution environment exceeds the predetermined threshold value, it is judged that the predetermined efficiency cannot be assured.

4. The information processing method as claimed in claim 1, wherein the condition indicates a predetermined value,

when the size of the memory storage area being used among memory storage areas allocated to the first execution environment exceeds the predetermined value, it is judged that the predetermined efficiency cannot be assured and further garbage collection is performed for the first execution environment.

5. The information processing method as claimed in claim 1, wherein

when the server computer judges that the predetermined processing efficiency cannot be assured, storing the data inherited between a series of processing requests to which the processing request belongs, in a storage area accessible from the first and the second execution environment.

6. The information processing method as claimed in claim 1, further comprising the steps of:

storing a session identifier identifying a series of sessions to which the processing request allocated to the first execution environment belongs therein,

when the server computer judges that the predetermined processing efficiency cannot be assured, judging whether the session identifier identifying the session to which the processing request received from the client is stored, and

when the session identifier is stored, allocating no processing request to the second execution environment.

7. The information processing method as claimed in claim 6, further comprising the steps of:

storing the processing request not allocated to the second execution environment, as a wait request, and

when the session identifier identifying the session to which the wait processing request belongs is attached to the response from the first execution environment, allocating the wait request to the second execution environment.

8. A server computer communicably connected to a client computer and comprising:

a processing request reception unit for receiving a processing request transmitted from the client computer,

a first and a second execution environment for executing a program performing information processing in accordance with the processing request,

a condition storage unit for storing a condition for judging whether a predetermined processing efficiency can be assured for the information processing performed by the first execution environment according to the processing request,

a judgment unit for judging whether the predetermined processing efficiency can be assured according to the condition, and

a processing request allocation unit for allocating the processing request to the second execution environment when it is judged that the predetermined processing efficiency cannot be assured.

9. An information processing system comprising a client computer and a server computer communicably connected to the client computer, wherein the server computer comprises:

a CPU and a memory,

a processing request reception unit for receiving a processing request transmitted from the client computer,

a first and a second execution environment for executing a program performing information processing in accordance with the processing request,

a condition storage unit for storing a condition for judging whether a predetermined processing efficiency can be assured for the information processing performed by the first execution environment according to the processing request,

a judgment unit for judging whether the predetermined processing efficiency can be assured according to the condition, and

a processing request allocation unit for allocating the processing request to the second execution environment when it is judged that the predetermined processing efficiency cannot be assured.

10. A program for causing a server computer communicably connected to a client computer for executing a program performing information processing in accordance with a processing request transmitted from the client computer, to execute:

a step for storing a condition for judging whether a predetermined processing efficiency can be assured for the information processing performed by a first execution environment in accordance with the processing request,

a step for receiving the processing request transmitted from the client computer,

a step for judging whether the predetermined processing efficiency can be assured according to the condition, and

a step for allocating the processing request to a second execution environment when it is judged that the predetermined processing efficiency cannot be assured.