Collaborative processor and system performance and power management

Patent metadata

Field	Value
Publication number	US-9442739-B2
Application number	US-201113976507-A
Country	US
Kind code	B2
Filing date	Dec 30, 2011
Priority date	Nov 22, 2011
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

The present invention relates to a platform power management scheme. In some embodiments, a platform provides a relative performance scale using one or more parameters to be requested by an OSPM system.

First claim

What is claimed is:

1. A memory storage device having instructions that when executed, implement an operating system (OS) power management method, comprising:
reading one or more platform power management interface registers to determine a range of available performance values;
selecting a plurality of performance values, wherein a platform is inhibited from varying a performance above or below a selected performance level when selected; and
evaluating platform performance for the plurality of selected performance values, wherein an OS is to select values in the performance value range from a Lowest through a Nominal value, while running a characterization workload.

2. The memory storage device of claim 1 , in which inhibiting includes selecting performance value parameters that set a minimum, maximum, and desired performance value to the same value.

3. The memory storage device of claim 1 , in which the OS is to evaluate the resulting performances for the selected values.

4. The memory storage device of claim 3 , in which different characterization workloads are used to evaluate performance levels for different processing task types.

5. The memory storage device of claim 4 , in which at least one of the processing task types includes a quality of service (QoS) task type to determine minimum performance levels desired for one or more different QoS scenarios.

6. A computing platform having an Operating System (OS) that, when executing, performs a method, comprising:
reading one or more platform power management interface registers to determine a range of available performance values;
selecting a plurality of performance values, wherein a platform is inhibited from varying a delivered performance above or below a selected performance level when selected; and
evaluating platform performance for the plurality of selected performance values,
wherein an OS is to select values in the performance value range from a Lowest through a Nominal value, while running a characterization workload.

7. The computing platform of claim 6 , in which inhibiting includes selecting performance value parameters that set a minimum, maximum, and desired performance value to the same value.

8. The computing platform of claim 6 , in which the OS is to evaluate the resulting performances for the selected values.

9. The computing platform of claim 8 , in which different characterization workloads are used to evaluate performance levels for different processing task types.

10. The computing platform of claim 9 , in which at least one of the processing task types includes a quality of service (QoS) task type to determine minimum performance levels desired for one or more different QoS scenarios.

Assignees

• Therien Guy M
• Diefenbaugh Paul S
• Aggarwal Anil
• Henroid Andrew D
• Shrall Jeremy J
• Rotem Efraim
• Sistla Krishnakanth V
• Weissmann Eliezer
• Intel Corp

Inventors

• Therien Guy M
• Diefenbaugh Paul S
• Aggarwal Anil
• Henroid Andrew D
• Shrall Jeremy J
• Rotem Efraim
• Sistla Krishnakanth V
• Weissmann Eliezer

Classifications

• G06F2119/06

  Power analysis or power optimisation · CPC title

• G06F1/206

  comprising thermal management · CPC title

• G06F1/3296

  by lowering the supply or operating voltage · CPC title

• G06F15/7871

  Reconfiguration support, e.g. configuration loading, configuration switching, or hardware OS · CPC title

• G06F1/324

  by lowering clock frequency · CPC title