HTML5 Web Worker Transparent Offloading Method for Web Applications

With the release of HTML5 standards, web applications have become more powerful, complicated and resource-hungry, whereas smart devices are in general resource-constrained. Computation offloading is one of the approaches used to increase application efficiency and decrease energy consumption of smart devices. In this paper, the offloading methods of HTML5 web worker in web applications are discussed, and a transparent offloading method of web worker is proposed to reduce execution time of web application and energy consumption of smart device. By rewrite of web worker implementation and modification of HTML5 websocket mechanism of web platform, web worker is offloaded to server side transparently. Common nontransparent web worker offloading method with JS framework has also been implemented. The experiments results show that the proposed web worker transparent offloading method achieves better performance improvements comparing to no offloading and non-transparent offloading respectively.