Priority execution control method in information processing system, apparatus therefor, and program

• US 20030037117A1
• Filed: 08/15/2002
• Published: 02/20/2003
• Est. Priority Date: 08/16/2001
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Tabuchi, Masahiro
• Granted Patent: US 7,340,742 B2
• Time in Patent Office: Days
• US Class Current: 709/207
• CPC Class Codes: G06F 9/4843 by program, e.g. task dispatcher, supervisor, operating system
• CPC Class Codes: H04L 12/18 for broadcast or conference , e.g. multicast

Abstract

In a priority execution control method in an information processing system, a processing request is stored in either of a priority queue and a normal queue in accordance with the processing priority. A processing request stored in the priority queue is extracted and processed by a priority processor which dedicatedly processes a processing request stored in the priority queue. A processing request stored in the normal queue is extracted and processed by a normal processor which dedicatedly processes a processing request stored in the normal queue. A priority execution control apparatus and computer-readable recording medium are also disclosed.

Claims

1. A priority execution control method in an information processing system, comprising the steps of:

storing a processing request in either of a priority queue and a normal queue in accordance with processing priority;

extracting and processing a processing request stored in the priority queue, by a priority processor which dedicatedly processes a processing request stored in the priority queue; and

extracting and processing a processing request stored in the normal queue, by a normal processor which dedicatedly processes a processing request stored in the normal queue.

2. A method according to claim 1, wherein the priority processor and the normal processor include a priority processing thread and a normal processing thread which operate parallel to each other on a computer.

3. A method according to claim 2, further comprising the step of setting thread priority of the priority processing thread lower than thread priority of the normal processing thread.

4. A method according to claim 2, further comprising the step of setting thread priority of the priority processing thread equal to thread priority of the normal processing thread.

5. A method according to claim 2, further comprising the step of setting thread priority of the priority processing thread higher than thread priority of the normal processing thread.

6. A method according to claim 2, further comprising the step of dynamically changing at least one of thread priorities of the priority and normal processing threads.

7. A method according to claim 1, wherein the storing step comprises the step of determining the priority by referring to a preset priority rule.

8. A method according to claim 7, further comprising the step of dynamically changing the priority rule.

9. A method according to claim 1, further comprising the step of notifying a processing request source of a processing result of a processing request.

10. A method according to claim 2, further comprising the step of notifying a processing request source of at least one of a result of processing a processing request by the priority processing thread and a result of processing a processing request by the normal processing thread.

11. A method according to claim 2, further comprising the steps of

dynamically generating a pair of the priority queue and priority processing thread, and

dynamically eliminating the generated pair of the priority queue and priority processing thread.

12. A method according to claim 1, wherein

the method further comprises the steps of

processing a processing request from a client to generate a response result in a processor arranged in a server connected to the client via a network, and

sending back the response result generated by the processor from a response unit arranged in the server to the requesting client, and

the storing step, the step of processing by the priority processor, and the step of processing by the normal processor are executed in at least one of the processor and the response unit.

13. A priority execution control apparatus in an information processing system, comprising:

a priority queue and a normal queue;

distribution means for storing a processing request in either of said priority queue and said normal queue in accordance with processing priority;

priority processing means, arranged in correspondence with said priority queue, for processing a processing request stored in said priority queue; and

normal processing means, arranged in correspondence with said normal queue, for processing a processing request stored in said normal queue.

14. An apparatus according to claim 13, wherein said priority processing means and said normal processing means include a priority processing thread and a normal processing thread which operate parallel to each other on a computer.

15. An apparatus according to claim 14, wherein thread priority of said priority processing thread is set lower than thread priority of said normal processing thread.

16. An apparatus according to claim 14, wherein thread priority of said priority processing thread is set equal to thread priority of said normal processing thread.

17. An apparatus according to claim 14, wherein thread priority of said priority processing thread is set higher than thread priority of said normal processing thread.

18. An apparatus according to claim 14, further comprising thread priority changing means for dynamically changing thread priority of said priority processing thread or said normal processing thread.

19. An apparatus according to claim 13, further comprising priority rule storage means for storing a priority rule referred to by said distribution means.

20. An apparatus according to claim 19, further comprising priority rule changing means for dynamically changing the priority rule stored in said priority rule storage means.

21. An apparatus according to claim 13, further comprising state notifying means for notifying a processing request source of a processing result of a processing request.

22. An apparatus according to claim 14, further comprising state notifying means for notifying a processing request source of at least one of a result of processing a processing request by said priority processing thread and a result of processing a processing request by said normal processing thread.

23. An apparatus according to claim 14, further comprising thread allocation means for dynamically generating a pair of said priority queue and priority processing thread, and dynamically eliminating the generated pair of said priority queue and priority processing thread.

24. An apparatus according to claim 14, wherein

the apparatus further comprises

processing means, arranged in a server connected to a client via a network, for processing a processing request to generate a response result, and

response means, arranged in the server, for sending back the response result generated by said processing means to the requesting client, and

said priority queue, said normal queue, said distribution means, said priority processing means, and said normal processing means are arranged in at least one of said processing means and said response means.

25. A computer-readable recording medium which records a program for causing a computer to execute procedures of:

storing a processing request in either of a priority queue and a normal queue in accordance with processing priority;

extracting and processing a processing request stored in the priority queue, by a priority processor which dedicatedly processes a processing request stored in the priority queue; and

extracting and processing a processing request stored in the normal queue, by a normal processor which dedicatedly processes a processing request stored in the normal queue.

26. A medium according to claim 25, wherein the priority processor and the normal processor include a priority processing thread and a normal processing thread which operate parallel to each other on a computer.

27. A medium according to claim 26, wherein thread priority of the priority processing thread is set lower than thread priority of the normal processing thread.

28. A medium according to claim 26, wherein thread priority of the priority processing thread is set equal to thread priority of the normal processing thread.

29. A medium according to claim 26, wherein thread priority of the priority processing thread is set higher than thread priority of the normal processing thread.

30. A medium according to claim 26, wherein the program further comprises a procedure of dynamically changing at least one of thread priorities of the priority and normal processing threads.

31. A medium according to claim 25, wherein the storing procedure comprises a procedure of determining the priority by referring to a preset priority rule.

32. A medium according to claim 31, wherein the program further comprises a procedure of dynamically changing the priority rule.

33. A medium according to claim 25, wherein the program further comprises a procedure of notifying a processing request source of a processing result of a processing request.

34. A medium according to claim 26, wherein the program further comprises a procedure of notifying a processing request source of at least one of a result of processing a processing request by the priority processing thread and a result of processing a processing request by the normal processing thread.

35. A medium according to claim 26, wherein the program further comprises procedures of

dynamically generating a pair of the priority queue and priority processing thread, and

dynamically eliminating the generated pair of the priority queue and priority processing thread.

36. A medium according to claim 25, wherein

the program further comprises procedures of

processing a processing request from a client to generate a response result in a processor arranged in a server connected to the client via a network, and

sending back the response result generated by the processor from a response unit arranged in the server to the requesting client, and

the storing procedure, the procedure of processing by the priority processor, and the procedure of processing by the normal processor are executed in at least one of the processor and the response unit.