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Dynamic voltage and frequency scaling system and method

A frequency adjustment and dynamic voltage technology, applied in the field of communication, can solve problems such as frequency regulation and voltage regulation that cannot fully reflect the CPU, and achieve the effect of ensuring CPU system performance, refined management, and realizing CPU power consumption.

Active Publication Date: 2016-06-15
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, performing DVFS on the CPU workload is a coarse-grained adjustment method, and the CPU workload cannot fully reflect the real needs of the CPU for frequency and voltage regulation.

Method used

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  • Dynamic voltage and frequency scaling system and method

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] figure 1 It is a system architecture diagram of a DVFS in the prior art. The system includes application 2000, DVFS unit 3000, power management unit 4000 and CPU5000. Wherein, the application 2000 and the DVFS unit 3000 are software parts, and the power management unit 4000 and CPU5000 are hardware parts.

[0030] Here, the application 2000 is upper layer application software. The DVFS unit 3000 includes a scheduling management unit 3100...

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Abstract

Embodiments of the invention provide a dynamic voltage and frequency scaling (DVFS) system and method. The system comprises a performance monitoring unit and a policy control unit. The performance monitoring unit is used for determining a current first core blockage (CB) coefficient of a central processing unit (CPU) and determining a first variable quantity according to the first CB coefficient, wherein the first CB coefficient represents the performance bottleneck of current processing capability of an arithmetic logic unit (ALU) in the CPU. The policy control unit is used for scaling a working frequency and a working voltage of the CPU according to the first variable quantity determined by the performance monitoring unit. According to the embodiments of the invention, the CPU is subjected to DVFS according to the variable quantity of the CB coefficient, so that the DVFS process can be controlled more finely, caused unnecessary scaling is avoided, and the fine management on the power consumption of the CPU is realized on the basis of ensuring the system performance of the CPU.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a dynamic voltage frequency scaling (Dynamic Voltage Frequency Scaling, DVFS) system and method in the communication field. Background technique [0002] DVFS is to dynamically adjust the operating voltage and operating frequency of the central processing unit (Central Processing Unit, CPU) and other related hardware on the basis of satisfying the system performance according to the scene and the size of the system load during the operation of the system. DVFS can save system power consumption. Specifically, when the system does not require high performance, reduce the voltage and frequency to reduce power consumption; when the system requires high performance, increase the voltage and frequency to improve performance. [0003] In the prior art, the software can judge whether it is necessary to adjust the operating voltage and operating frequency of the CPU according t...

Claims

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Application Information

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IPC IPC(8): G06F1/32G06F11/30
CPCG06F1/3206G06F1/3296G06F11/3024G06F11/3058Y02D10/00
Inventor 刘虎王洪光杜艳林余加强
Owner HUAWEI TECH CO LTD
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