NDLI: Cache-Aware Compositional Analysis of Real-Time Multicore Virtualization Platforms

Content Provider	IEEE Xplore Digital Library
Author	Meng Xu Phan, L.T.X. Insup Lee Sokolsky, O. Sisu Xi Chenyang Lu Gill, C.
Copyright Year	2013
Abstract	Multicore processors are becoming ubiquitous, and it is becoming increasingly common to run multiple real-time systems on a shared multicore platform. While this trend helps to reduce cost and to increase performance, it also makes it more challenging to achieve timing guarantees and functional isolation. One approach to achieving functional isolation is to use virtualization. However, virtualization also introduces many challenges to the multicore timing analysis, for instance, the overhead due to cache misses becomes harder to predict, since it depends not only on the direct interference between tasks but also on the indirect interference between virtual processors and the tasks executing on them. In this paper, we present a cache-aware compositional analysis technique that can be used to ensure timing guarantees of components scheduled on a multicore virtualization platform. Our technique improves on previous multicore compositional analyses by accounting for the cache-related overhead in the components' interfaces, and it addresses the new virtualization-specific challenges in the overhead analysis. To demonstrate the utility of our technique, we report results from an extensive evaluation based on randomly generated workloads.
Sponsorship	IEEE Comput. Soc.
Starting Page	1
Ending Page	10
File Size	850870
Page Count	10
File Format	PDF
ISBN	9781479920068
ISSN	10528725
DOI	10.1109/RTSS.2013.9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-03
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Program processors Virtualization Multicore processing Bandwidth Real-time systems Timing Computational modeling RT-Xen multicore virtualization cache-aware compositional analysis interface real-time
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software

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