System of managing processor resources in a non-dedicated computer system

• US 6,654,780 B1
• Filed: 03/28/1997
• Issued: 11/25/2003
• Est. Priority Date: 03/28/1997
• Status: Expired due to Term

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Eilert, Catherine Krueger, Yocom, Peter Bergersen
• Primary Examiner(s): Maung, Zarni
• Assistant Examiner(s): Opie, George L.
• Application Number:
  US08/827,286
• Time in Patent Office: 2,433 Days
• Field of Search: 395/674, 395/678, 395/673, 395/500, 709/101, 709/103, 709/104, 709/107, 709/100, 709/102
• US Class Current: 718/104
• CPC Class Codes: G06F 9/5011 the resources being hardware resources other than CPUs, Servers and Terminals

Abstract

Managing processor resources in a non-dedicated computer system. An amount of a processor resource is allocated to a real-time application of the computer system. The amount does not exceed a limit chosen for a group of real-time applications, wherein the group includes the real-time application being allocated the resource. A selected amount of the processor resource remains available to execute other types of applications and work on the system. During processing of the real-time application, use of the processor resource does not exceed a chosen maximum value, thereby ensuring the processor resource is not monopolized by the real-time application and allowing other types of work to be processed on the system.

Claims

1. A system of managing processor resources in a general purpose computer system, said system comprising:

a resource manager adapted to allocate an amount of a processor resource to a real-time application of said general purpose computer system, said amount not to exceed a limit chosen for a group of one or more real-time applications, said group including at least said real-time application, wherein a user-defined selected amount of said processor resource remains available for at least one non-real-time application of said general purpose computer system, and wherein said processor resource comprises processing capacity of one or more central processing units; and

means for processing said real-time application, wherein said means for processing comprises means for preventing, by said resource manager without assistance from said real-time application, said real-time application from exceeding a maximum amount of said processor resource selected for said group of real-time applications.

2. The system of claim 1, further comprising means for indicating to said computer system that said real-time application wishes to be processed.

3. The system of claim 2, wherein said means for indicating comprises:

a dispatch priority set for said real-time application; and

an indicator adapted to specify that said dispatch priority is not to be adjusted.

4. The system of claim 1, wherein said resource manager further comprises:

a determination unit adapted to determine a highest service cost, within a given period of time, for delivering a real-time data rate;

a calculation unit adapted to calculate a service rate for delivering a real-time data stream of said real-time application; and

an indicator adapted to specify that a sufficient amount of said processor resource is available for said real-time data stream when said service rate falls within said limit.

5. The system of claim 4, further comprising a summation unit adapted to add a data rate of said real-time data stream to a current allocated data rate in order to track the amount of processor resource currently allocated to said group of real-time applications.

6. The system of claim 1, wherein said resource manager is further adapted to deallocate said allocated amount of said processor resource when said real-time application no longer needs said processor resource.

7. The system of claim 6, wherein said resource manager further comprises a subtractor adapted to subtract a data rate of said real-time application from a current allocated data rate such that the deallocated amount of processor resource is now available for said group of real-time applications.

8. The system of claim 1, wherein said resource manager is further adapted to pause processing of said real-time application.

9. The system of claim 8, wherein said resource manager further comprises means for reserving said allocated amount of processor resource during said pause.

10. The system of claim 8, wherein said resource manager is adapted to resume processing of said paused real-time application.

11. The system of claim 1, wherein said means for processing of said real-time application comprises one or more control parameters, associated with said real-time application, adapted to be adjusted, when said one or more control parameters need adjusting to meet one or more performance goals of said computer system.

12. The system of claim 1, further comprising means for processing one of said at least one non-real-time application, wherein said means for processing of said one non-real-time application comprises means for adjusting one or more control parameters associated with said one non-real-time application, when said one or more control parameters need adjusting to meet one or more performance goals of said computer system.

13. The system of claim 1, wherein said means for preventing comprises one or more indicators adapted to indicate that one or more work units of said real-time application is non-dispatchable such that said maximum amount is not exceeded.

14. A system of managing processor resources in a computer system, comprising:

a selected amount of a processor resource allocatable to a group of one or more real-time applications of said computer system, said processor resource comprising processing capacity of one or more central processing units;

a user-defined amount of said processor resource reserved for one or more non-real-time applications of said computer system; and

a resource manager adapted to prevent, without assistance of said one or more real-time applications, said group of one or more real-time applications from exceeding a maximum amount of said processor resource selected for said group of one or more real-time applications.

15. The system of claim 14, wherein said selected amount of said processor resource is allocatable to a plurality of groups of one or more real-time applications.

16. A method of managing processor resources in a general purpose computer system, said method comprising:

allocating an amount of a processor resource to a real-time application of said general purpose computer system, said amount not to exceed a limit chosen for a group of one or more real-time applications, said group including at least said real-time application, wherein a user-defined selected amount of said processor resource remains available for at least one non-real-time application of said general purpose computer system, and wherein said processor resource comprises processing capacity of one or more central processing units; and

processing said real-time application, wherein said processing comprises preventing, by a resource manager without assistance from said real-time application, said real-time application from exceeding a maximum amount of said processor resource selected for said group of real-time applications.

17. The method of claim 16, further comprising indicating to said computer system that said real-time application wishes to be processed.

18. The method of claim 17, wherein said indicating comprises:

setting a dispatch priority for said real-time application; and

specifying said dispatch priority is not to be adjusted.

19. The method of claim 16, wherein said allocating comprises:

determining a highest service cost, within a given period of time, for delivering a real-time data rate;

calculating a service rate for delivering a real-time data stream of said real-time application; and

indicating a sufficient amount of said processor resource is available for said real-time data stream when said service rate falls within said limit.

20. The method of claim 19, further comprising adding a data rate of said real-time data stream to a current allocated data rate in order to track the amount of processor resource currently allocated to said group of real-time applications.

21. The method of claim 16, further comprising deallocating said allocated amount of said processor resource when said real-time application no longer needs said processor resource.

22. The method of claim 21, wherein said deallocating comprises subtracting a data rate of said real-time application from a current allocated data rate such that the deallocated amount of processor resource is now available for said group of real-time applications.

23. The method of claim 16, further comprising pausing processing of said real-time application.

24. The method of claim 23, wherein said pausing comprises reserving said allocated amount of processor resource.

25. The method of claim 23, further comprising resuming processing of said paused real-time application.

26. The method of claim 16, wherein said processing of said real-time application comprises adjusting one or more control parameters associated with said real-time application, when said one or more control parameters need adjusting to meet one or more performance goals of said computer system.

27. The method of claim 16, further comprising processing one of said at least one non-real-time application, wherein said processing of said one non-real-time application comprises adjusting one or more control parameters associated with said one non-real-time application, when said one or more control parameters need adjusting to meet one or more performance goals of said computer system.

28. The method of claim 16, wherein said preventing comprises indicating one or more work units of said real-time application is non-dispatchable such that said maximum amount is not exceeded.

29. A method of managing processor resources in a computer system, comprising:

selecting an amount of a processor resource allocatable to a group of one or more real-time applications of said computer system, said processor resource comprising processing capacity of one or more central processing units;

reserving a user-defined amount of said processor resource for one or more non-real-time applications of said computer system; and

preventing, by a resource manager without assistance of said one or more real-time applications, said group of one or more real-time applications from exceeding a maximum amount of said processor resource selected for said group of one or more real-time applications.

30. The method of claim 29, wherein said selected amount of said processor resource is allocatable to a plurality of groups of one or more real-time applications.

31. At least one program storage device readable by a machine, tangibly embodying at least one program of instructions executable by the machine to perform a method of managing processor resources in a general purpose computer system, said method comprising:

allocating an amount of a processor resource to a real-time application of said general purpose computer system, said amount not to exceed a limit chosen for a group of one or more real-time applications, said group including at least said real-time application, wherein a user-defined selected amount of said processor resource remains available for at least one non-real-time application of said general purpose computer system, and wherein said processor resource comprises processing capacity of one or more central processing units; and

processing said real-time application, wherein said processing comprises preventing, by a resource manager without assistance from said real-time application, said real-time application from exceeding a maximum amount of said processor resource selected for said group of real-time applications.

32. The at least one program storage device of claim 31, wherein said method further comprises indicating to said computer system that said real-time application wishes to be processed.

33. The at least one program storage device of claim 32, wherein said indicating comprises:

setting a dispatch priority for said real-time application; and

specifying said dispatch priority is not to be adjusted.

34. The at least one program storage device of claim 31, wherein said allocating comprises:

determining a highest service cost, within a given period of time, for delivering a real-time data rate;

calculating a service rate for delivering a real-time data stream of said real-time application; and

indicating a sufficient amount of said processor resource is available for said real-time data stream when said service rate falls within said limit.

35. The at least one program storage device of claim 34, wherein said method further comprises adding a data rate of said real-time data stream to a current allocated data rate in order to track the amount of processor resource currently allocated to said group of real-time applications.

36. The at least one program storage device of claim 31, wherein said method further comprises deallocating said allocated amount of said processor resource when said real-time application no longer needs said processor resource.

37. The at least one program storage device of claim 36, wherein said deallocating comprises subtracting a data rate of said real-time application from a current allocated data rate such that the deallocated amount of processor resource is now available for said group of real-time applications.

38. The at least one program storage device of claim 31, wherein said method further comprises pausing processing of said real-time application.

39. The at least one program storage device of claim 38, wherein said pausing comprises reserving said allocated amount of processor resource.

40. The at least one program storage device of claim 38, wherein said method further comprises resuming processing of said paused real-time application.

41. The at least one program storage device of claim 31, wherein said processing of said real-time application comprises adjusting one or more control parameters associated with said real-time application, when said one or more control parameters need adjusting to meet one or more performance goals of said computer system.

42. The at least one program storage device of claim 31, wherein said method further comprises processing one of said at least one non-real-time application, wherein said processing of said one non-real-time application comprises adjusting one or more control parameters associated with said one non-real-time application, when said one or more control parameters need adjusting to meet one or more performance goals of said computer system.

43. The at least one program storage device of claim 31, wherein said preventing comprises indicating one or more work units of said real-time application is non-dispatchable such that said maximum amount is not exceeded.

44. At least one program storage device readable by a machine, tangibly embodying at least one program of instructions executable by the machine to perform a method of managing processor resources in a computer system, said method comprising:

selecting an amount of a processor resource allocatable to a group of one or more real-time applications of said computer system, said processor resource comprising processing capacity of one or more central processing units;

reserving a user-defined amount of said processor resource for one or more non-real-time applications of said computer system; and

preventing, by a resource manager without assistance of said one or more real-time applications, said group of one or more real-time applications from exceeding a maximum amount of said processor resource selected for said group of one or more real-time applications.

45. The at least one program storage device of claim 44, wherein said selected amount of said processor resource is allocatable to a plurality of groups of one or more real-time applications.