l17 Data Center Networking

l17 Data Center Networking - Data Center Networking...

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Data Center Networking Stanford CS144 Lecture 17 Philip Levis, 11/30/11
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Low latencies: μs High capacity: GigE, 10 GigE Specialized traffic Centrally managed
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Topology (picture courtesy of Al-Fares et al, “A Scalable, Commodity Data Center Network Architecture”)
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Storage Workload (picture courtesy of Phanishayee et al, “Measurement and Analysis of TCP Throughput Collapse in Cluster-based Storage Systems”)
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Query Workload (picture courtesy of Alizadeh et al., “Data Center TCP (DCTCP)”)
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Problems
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Per-Pair Bandwidth (picture courtesy of Al-Fares et al, “A Scalable, Commodity Data Center Network Architecture”)
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Incast (from Phanishayee et al, “Measurement and Analysis of TCP Throughput Collapse in Cluster-based Storage Systems”)
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Incast Details (from Phanishayee et al, “Measurement and Analysis of TCP Throughput Collapse in Cluster-based Storage Systems”)
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Mixed traffic Low latency for short flows High burst tolerance (incast) High throughput for long flows
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Recent Research New switching topology: Al-Fares et al.
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