ScholarlyCommons: Repository

Title

Realizing Compositional Scheduling through Virtualization

Author(s)

Jaewoo Lee, University of Pennsylvania
Sisu Xi, Washington University in St Louis
Sanjian Chen, University of Pennsylvania
Linh T.X. Phan, University of Pennsylvania
Chris Gill, Washington University in St Louis
Insup Lee, University of PennsylvaniaFollow
Chenyang Lu, Washington University in St Louis
Oleg Sokolsky, University of PennsylvaniaFollow

Document Type

Technical Report

Date of this Version

1-1-2011

Comments

University of Pennsylvania Department of Computer and Information Science Technical Report No. MS-CIS-11-13.

Corresponding Conference Paper:
http://repository.upenn.edu/cis_papers/484/

Abstract

We present a co-designed scheduling framework and platform architecture that support compositional scheduling of real-time systems. The architecture is built on Xen virtualization platform, and relies on compositional scheduling theory that uses periodic resource models as component interfaces. We implement resource models as periodic servers and consider enhancements to periodic server design that significantly improve response times of tasks and resource utilization in the system while preserving theoretical schedulability results. We present an extensive evaluation of our implementation using workloads from an avionics case study as well as synthetic ones.