Terminal energy-saving method and system based on code migration in mobile cloud environment

Abstract

The invention discloses a terminal energy-saving method and system based on code migration in a mobile cloud environment, including: measuring the power and instruction execution speed of each device in the mobile cloud environment at different frequencies, and obtaining the current frequency, load and network transmission rate of the device, etc. ; If the current frequency of the existing device is lower than the highest frequency of the device, then calculate and update the code migration strategy, if the new code migration strategy is more energy-efficient, then update the output code migration strategy; assuming that the lowest frequency device is increased by one frequency level, and then the task is changed from The non-lowest frequency devices are migrated to the lowest frequency devices. If the task energy saving is achieved and the performance constraints are satisfied, the lowest frequency devices will be added to the candidate frequency modulation devices; if the set of candidate frequency modulation devices is empty, all the lowest frequency devices will be increased by one frequency level, otherwise Select the most energy-efficient device from the lowest-frequency device set and configure it to increase a frequency level. The method of the invention can reduce energy consumption by an average of about 20% on the premise of ensuring the performance of application codes.

Description

technical field [0001] The present invention belongs to the technical field of mobile cloud computing, and more specifically, relates to a terminal energy-saving method and system based on code migration in a mobile cloud environment. Background technique [0002] The processor performance of mobile devices is developing rapidly, but there is still a big gap compared with the processing performance of PCs. The main reason is that the processing performance of mobile devices cannot be compared with that of PCs and servers due to the size limitation of mobile devices, battery capacity and heat dissipation requirements. . Now mobile applications are becoming more and more complex, and many new application requirements are constantly emerging, such as large-scale 3D mobile games, virtual reality technology, and augmented reality technology all require high-performance processing capabilities to generate high-resolution and high frame rate images . The problem of how to enhance...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the purpose of the present invention is to provide a terminal energy-saving method and system based on code migration in the mobile cloud environment, thereby solving the problem that the existing code migration scheme for the mobile cloud does not consider the CPU frequency. Serious battery power consumption problems caused by power consumption characteristics

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