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Method and device for adaptive dynamic frequency or voltage adjustment of CPU

A technology of dynamic frequency modulation and dynamic voltage regulation, which is applied in the direction of data processing power supply, etc., can solve the problem of reducing CPU utilization, and achieve the effects of saving power consumption, improving utilization, and increasing the use time

Inactive Publication Date: 2012-05-23
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to provide a kind of CPU self-adaptive dynamic frequency modulation or voltage regulation method and its device, to solve the problem that the method for adjusting CPU working frequency in existing DVS algorithm reduces CPU utilization rate

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  • Method and device for adaptive dynamic frequency or voltage adjustment of CPU
  • Method and device for adaptive dynamic frequency or voltage adjustment of CPU
  • Method and device for adaptive dynamic frequency or voltage adjustment of CPU

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Embodiment Construction

[0055] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0056] refer to figure 1 , the adaptive dynamic frequency modulation method of CPU of the present invention mainly comprises the following steps:

[0057] Step 101: the operating system of the CPU records the running time of all processes in the CPU in real time;

[0058] Here, the real-time recording of the running time of all processes in the CPU may specifically be: in the operating system of the CPU, generally one or more time recording nodes for recording the running time of each process are set in real time.

[0059] When it is detected that process scheduling occurs in the CPU, a time recording node is inserted for the old process in the operating system of the CPU, and the process number of the old process and the running time of the process from the start of operation to the occurrence of process scheduling are written...

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Abstract

The invention relates to a method and a device for the adaptive dynamic frequency or voltage adjustment of a CPU. The method for frequency adjustment comprises: recording the operation time of each process in the CPU in real time; when detecting that only a null process is in operation in the CPU, determining the frequency utilization rate of each process in the CPU according to the recorded operation time; and adjusting the working frequency of the CPU according to a maximum value in the frequency utilization rates. The method and the device for the adaptive dynamic frequency or voltage adjustment of the CPU effectively guarantee the smooth operation of the processes in the CPU, avoid increasing extra operational loads for the CPU, effectively improve the utilization rate of the CPU, contribute to the system consumption of the CPU and prolong the service life of the power supply of the CPU. The method and the device can be used in various operation systems using CPU process scheduling, particularly embedded systems using a power supply with limited electric quantity to supply power.

Description

technical field [0001] The invention relates to the technical field of low power consumption of embedded equipment, in particular to an adaptive dynamic frequency regulation or voltage regulation method and device for an energy-saving CPU. Background technique [0002] Mobile handheld devices have developed rapidly in recent years, and have become another major market segment after personal computers (PC, Personal Computer). At present, most mobile handheld devices are powered by batteries. Compared with desktop computers powered by mains power, the power supply of such devices is limited. Especially for various smart phones with PC functions, the length of the battery working time directly determines the quality of its performance. In order to prolong the working time of the battery, one way is to use various storage media to improve the performance of the battery to increase the specific energy of the battery. However, due to the influence of various factors, the actual ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/32
Inventor 欧阳慧琴
Owner ZTE CORP