Minimizing scheduling delay for multimedia in Xen hypervisor

Abstract

In this paper, we propose Real-time Xen (RTXen) scheduling framework that supports time sensitive workloads on Xen hypervisor. Our primary goal is to provide real-time guarantee for real-time components that are running on the hypervisor. To accomplish this goal, first, we modified Xen credit scheduler to support real-time scheduling for real-time components. Second, we evaluated multi-core CPU capacity with/without hyper-thread capabilities. To guarantee timely execution of real-time task, we have to measure CPU resources for exact CPU capacity analysis. Our experiments demonstrate that the proposed system can support real-time workloads efficiently and it also shows fair share execution of non-real-time workloads. © 2011 Springer-Verlag Berlin Heidelberg.