Embedded system power consumption estimation method based on hardware performance counter

Abstract

The invention discloses an embedded system power consumption estimation method based on a hardware performance counter. The method comprises the steps of classifying performance events, selecting the performance events with representativeness, calculating a Spearman's rank correlation coefficient between the number of occurrences of the performance events and the power consumption, judging the degree of correlation, selecting representative performance events, then, establishing a power consumption model by using a linear regression method, and estimating the power consumption of an embedded system. According to the embedded system power consumption estimation method based on the hardware performance counter, through analyzing the power consumption model, the change of the power consumption of a processor in a time sequence can be observed, and the working conditions of the software and hardware of the system can be subjected to adjustment according to real-time monitoring data by adopting certain strategies, so that the aims of guaranteeing system stability, prolonging battery working time or adjusting cooling equipment to guarantee performance and the like are reached, thus, performance optimization is carried out, and then, the operating efficiency of the whole system is increased.

Description

technical field [0001] The invention relates to the field of power consumption calculation of an embedded system, in particular to a method for estimating power consumption of an embedded system based on a hardware performance counter. Background technique [0002] The current development trend of embedded systems can be summarized as the continuous improvement of hardware performance and the increasing scale of software, facing the performance problem of high hardware power consumption. To solve this problem, it is necessary to study the generation of hardware power consumption in embedded systems. [0003] Early embedded processors often used RISC instruction sets due to their simple structure, and the performance requirements were not high, and the main frequency was low, so there was no serious power consumption problem. Power consumption problems usually only exist in PC systems with high performance requirements. . In recent years, with the increasing demand for hardw...

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Problems solved by technology

In an embedded system, the power consumption of the processor occupies a large part of the overall power consumption, and usually causes heat dissipation problems, so finding a method that can describe the power consumption of the embedded processor caused by software operation is very necessary

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