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Design of a crossbar VOQ real-time switch with clock-driven scheduling for a guaranteed delay bound

Title
Design of a crossbar VOQ real-time switch with clock-driven scheduling for a guaranteed delay bound
Author(s)
Kang, KyungtaePark, Kyung-JoonSha, LuiWang, Qixin
Issued Date
2013-01
Citation
Real-Time Systems, v.49, no.1, pp.117 - 135
Type
Article
Author Keywords
Real-time switchBounded delaySchedulability analysisClock-driven scheduling
Keywords
INPUTCOMMUNICATIONARCHITECTUREALGORITHM
ISSN
0922-6443
Abstract
Most commercial network switches are designed to achieve good average throughput and delay needed for Internet traffic, whereas hard real-time applications demand a bounded delay. Our real-time switch combines clearance-time-optimal switching with clock-based scheduling on a crossbar switching fabric. We use real-time virtual machine tasks to serve both periodic and aperiodic traffic, which simplifies analysis and provides isolation from other system operations. We can then show that any feasible traffic will be switched in two clock periods. This delay bound is enabled by introducing one-shot traffic, which can be constructed at the cost of a fixed delay of one clock period. We carry out simulation to compare our switch with the popular iSLIP crossbar switch scheduler. Our switch has a larger schedulability region, a bounded lower end-to-end switching delay, and a shorter clearance time which is the time required to serve every packet in the system. © 2012 Springer Science+Business Media New York.
URI
http://hdl.handle.net/20.500.11750/5329
DOI
10.1007/s11241-012-9169-6
Publisher
Springer
Related Researcher
  • 박경준 Park, Kyung-Joon
  • Research Interests Cyber-Physical Systems; Robot Operating System (ROS); Smart Manufacturing
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Appears in Collections:
Department of Electrical Engineering and Computer Science CSI(Cyber-Physical Systems Integration) Lab 1. Journal Articles

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