Virtual Deadline Scheduling Algorithm on Window-Constrained Constant Bandwidth Server

Advances in computing applications in recent years have prompted the demand for more flexible scheduling models. The DWCS (Dynamic Window-Constrained Scheduling) is a flexible scheduling algorithm. This paper applies VDS (Virtual Deadline Scheduling) and DWCS into the open real-time system. The paper analyzes the CBS (Constant Bandwidth Server) which the open real-time scheduling is based on. To evaluate the performance of the new server, the two server mechanisms have been implemented on the Linux kernel. The experimental results show that the new server is better than the old server. In the end, the future research directions are discussed.