Method for managing processor hot plug on ARM MPCore processor

A processor and hot-swappable technology, applied in the field of embedded intelligent power management, can solve problems such as no CPU hot-swappable

Inactive Publication Date: 2009-04-22
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing operating systems, such as the Linux operating system, support hot-swapping of the CPU in user

Method used

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  • Method for managing processor hot plug on ARM MPCore processor

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Embodiment Construction

[0006] Such as figure 1 As shown, the steps to manage processor hot-swapping on ARM MPCore are:

[0007] Step 1: The monitoring program regularly collects the utilization rate of each processor and the number of real-time processes

[0008] Step 2: If the number of real-time processes is N, if 04, open all CPUs;

[0009] Step 3: If the usage rate of a certain CPU is greater than 90%, and the number of starting CPUs is less than 4, turn on the closed CPU

[0010] Step 4: If the utilization rate of a certain CPU is equal to 0% for a long time, shut down the CPU and return to step 1.

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Abstract

The invention provides a method for managing a processor hot plug on an ARM MPCore processor. The method belongs to the technical field of embedded intelligent power supply management. The technical problem solved by the method is that power consumption of a multi-core processor and the effects on CPU performance are reduced by intelligent management of the CPU hot plug. The technical proposal solving the problem is characterized by intelligent management of the CPU hot plug according to information such as the CPU utilization rate, the number of the real-time processes and the like. The method is mainly used for reducing system power consumption on equipment using the ARM MPCore processor.

Description

technical field [0001] The invention relates to a method for managing processor hot swapping on an ARM MPCore processor. The technology belongs to the field of embedded intelligent power management. Background technique [0002] In the embedded field, processors are also developing towards multi-core. ARM MPCore is a processor with 4 cores. Except for the first CPU, other CPUs support hot swapping. Existing operating systems, such as the Linux operating system, support hot-swapping of the CPU in user space, but there is no method to manage the hot-swapping of the CPU and perform intelligent power management. Contents of the invention [0003] The purpose of the present invention is to propose a method for managing the hot swapping of ARM MPCore multi-core processors, shut down idle CPUs in real time, and reduce the impact of shutting down the CPU on the entire system while saving system power consumption. [0004] For achieving the above object, the present invention pro...

Claims

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Application Information

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IPC IPC(8): G06F9/50G06F1/32
CPCY02B60/142Y02B60/167Y02D10/00
Inventor 周余于耀王伟都思丹
Owner NANJING UNIV
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