A Hybrid Task Scheduling for Multi-Core Platform

With the advancement of technology, various services can be combined in a single computer system, such as Mobile Computing, and Digital Home, etc. With the properties of compact size, low power consumption, and full computing power, multi-core processor systems can be used to fulfill these kind of applications. For a set of hybrid tasks which comprise large real-time and non-real-time applications, however, currently, the operating system does not have any scheduling policy to improve the performance on multi-core platforms effectively. The task scheduling of operating system for general purpose applications can not satisfy the working demand of hybrid tasks, especially with large amount of real-time tasks. In this paper, we proposed a hybrid task scheduling scheme for multi-core platforms. In the proposed scheme, a two-level hierarchical scheduling is applied to adjust real-time and non-real-time tasks. It can not only maintain the response time of general tasks, but also support the real-time requirements for other tasks. The experimental results show that a higher efficiency can be obtained by applying the proposed scheme on multi-core architectures.