NDLI: Optimizing Soft Real-Time Scheduling Performance for Virtual Machines with SRT-Xen

Content Provider	IEEE Xplore Digital Library
Author	Kun Cheng Yuebin Bai Rui Wang Yao Ma
Copyright Year	2015
Description	Author affiliation: State Key Lab. of Software Dev. Environ., Beihang Univ., Beijing, China (Kun Cheng; Yuebin Bai; Rui Wang; Yao Ma)
Abstract	Multimedia applications are an important part of today's Internet. However, currently most virtualization solutions, including Xen, lack adequate support for soft real-time tasks. Soft real-time applications, e.g. media workloads, are impeded by components of virtualization, such as the increase of scheduling latency. This paper focuses on improving scheduling scheme to support soft real-time workloads in virtualization systems. In this paper, we present an enhanced scheduler SRT-Xen. SRT-Xen can promote the soft real-time domain's performance compared with Xen's existing scheduling. It focuses on not only bringing a new realtime-friendly scheduling framework with corresponding strategies but also improving the management of the virtual CPUs' queuing in order to implement a fair scheduling mechanism for both real-time and non-real-time tasks. Finally, we use PESQ (Perceptual Evaluation of Speech Quality) and other benchmarks to evaluate and compare SRT-Xen with some other works. The results show that SRT-Xen supports soft real-time domains well without penalizing non-real-time ones.
Starting Page	169
Ending Page	178
File Size	979178
Page Count	10
File Format	PDF
ISBN	9781479980062
DOI	10.1109/CCGrid.2015.52
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-04
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real-time systems Scheduling Virtual machine monitors Virtualization Servers Linux Processor scheduling Credit Scheduler Xen Real-time VoIP
Content Type	Text
Resource Type	Article

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