Performance control apparatus and method for data processing system

• US 7,328,129 B2
• Filed: 09/28/2006
• Issued: 02/05/2008
• Est. Priority Date: 09/12/2001
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Sato, Masaru, Miyata, Katsuhisa
• Primary Examiner(s): Raymond; Edward
• Application Number:
  US11/528,618
• Publication Number:
  US 20070021942A1
• Time in Patent Office: 495 Days
• Field of Search: 702/182, 702183-185, 702/188, 700/26
• US Class Current: 702/182
• CPC Class Codes: G06F 11/3409 for performance assessment
• CPC Class Codes: G06F 11/3476 Data logging G06F11/14, G06F11/2205 take precedence
• CPC Class Codes: G06F 2221/2101 Auditing as a secondary aspect
• CPC Class Codes: G06F 2221/2135 Metering
• CPC Class Codes: G06F 2221/2151 Time stamp
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A processing unit (processor) performs processing of programs. A monitoring unit measures the rate of operation of an instruction processor in the processing unit. Information which is a standard for judging modification of the performance is stored in a control information memory unit. A control unit judges on the basis of the operation rate of the processor collected by the monitoring unit and the control information stored in the control information memory unit whether it is necessary to modify the performance or not and controls to modify the performance of the processor on the basis of the judged result.

Claims

1. A computer implemented method of controlling a performance of processing a program executed by a CPU in a computer having a memory means, a CPU, a monitoring means and a performance control means, said method comprising:

executing, by the CPU, the program stored in said memory means;

controlling, by the CPU, a performance of the program represented by the number of instructions executed per unit time;

measuring, by said monitoring means, the performance of processing of said program executed by said CPU at predetermined intervals;

controlling, by said performance control means, the CPU to modify the performance of processing the program executed by said CPU by changing execute steps of processing of the program or by changing a machine cycle of the CPU;

storing, in said memory means, control information which is a standard for modifying the performance of processing the program executed by said CPU;

storing, in said memory means, history information of the performance of processing said program executed by said CPU measured by said monitoring means; and

controlling, by said performance control means, the performance of processing said program executed by said CPU on the basis of said control information and said history information stored in said memory means by one of changing execute steps of processing of the program and of changing a machine cycle of the CPU.

2. A method according to claim 1, wherein said monitoring means measures the rate of operation of said CPU.

3. A method according to claim 1, wherein said performance control means modifies the performance of processing the program in said CPU when the state that the rate of operation is outside a predetermined range is continued for a predetermined time or more.

4. A method according to claim 1, wherein the performance of processing the program in said CPU is modified by insertion of dummy step.

5. A method according to claim 1, wherein the performance of processing the program in said CPU is modified by change of a clock frequency of said operation processing means.

6. A method according to claim 1, wherein said control information is modified on the basis of a request sent from a terminal.

7. A method according to claim 1, wherein said control information can be modified trough a network.

8. A method according to claim 1, further comprising calculating, by accounting means, a charge for using said CPU to make billing.

9. A method according to claim 8, wherein said charge for using is calculated on the basis of said history information.

10. A computer having a CPU, a memory means, a monitoring means and a performance control means, comprising:

said CPU executing a program stored in said memory means;

said CPU controlling a performance of the program represented by the number of instructions executed per unit time;

said monitoring means measuring the performance of processing of said program executed by said CPU at predetermined intervals;

said performance control means controlling the CPU to modify the performance of processing the program executed by said CPU by changing execute steps of processing of the program or by changing a machine cycle of the CPU;

said memory means storing control information which is a standard for modifying the performance of processing the program executed by said CPU and storing history information of the performance of processing said program executed by said CPU measured by said monitoring means; and

said performance control means controlling the performance of processing said program executed by said CPU on the basis of said control information and said history information stored in said memory means by one of changing execute steps of processing of the program and of changing a machine cycle of the CPU.

11. A computer according to claim 10, wherein said monitoring means measures the rate of operation of said CPU.

12. A computer according to claim 10, wherein said performance control means modifies the performance of processing the program in said CPU when the state that the rate of operation is outside a predetermined range is continued for a predetermined time or more.

13. A computer according to claim 10, wherein the performance of processing the program in said CPU is modified by insertion of dummy step.

14. A computer according to claim 10, wherein the performance of processing the program in said CPU is modified by change of a clock frequency of said operation processing means.

15. A computer according to claim 10, wherein said control information is modified on the basis of a request sent from a terminal.

16. A computer according to claim 10, wherein said control information can be modified through a network.

17. A computer according to claim 10, further comprising calculating, by accounting means, a charge for using said CPU to make billing.

18. A computer according to claim 17, wherein said charge for using is calculated on the basis of said history information.