Assumes a tree based topology traditional fat tree VL2 currently working on

Assumes a tree based topology traditional fat tree

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Assumes a tree-based topology: traditional, fat-tree, VL2 (currently working on removing this assumption) Min guarantees Hose model Admission control Proportional Sharing on Proximate Links (PS-P) A 1 Bw A1 A 2 Bw A2 A n Bw An
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Assumes a tree-based topology: traditional, fat-tree, VL2 (currently working on removing this assumption) Min guarantees Hose model Admission control High Utilization Per source fair sharing towards tree root Proportional Sharing on Proximate Links (PS-P)
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Assumes a tree-based topology: traditional, fat-tree, VL2 (currently working on removing this assumption) Min guarantees Hose model Admission control High Utilization Per source fair sharing towards tree root Per destination fair sharing from tree root Proportional Sharing on Proximate Links (PS-P)
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Deploying PS-L, PS-N and PS-P Full Switch Support All allocations can use hardware queues (per tenant, per VM or per source-destination) Partial Switch Support PS-N and PS-P can be deployed using CSFQ [Sigcomm’98] No Switch Support PS-N can be deployed using only hypervisors PS-P could be deployed using only hypervisors, we are currently working on it
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Evaluation Small Testbed + Click Modular Router 15 servers, 1Gbps links Simulation + Real Traces 3200 nodes, flow level simulator, Facebook MapReduce traces
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Many to one Bw B Bw A A B N One link, testbed PS-P offers guarantees Bw A N
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MapReduce One link, testbed Bw B Bw A 5 R 5 M M+R = 10 M Bw B (Mbps) PS-L offers link proportionality
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MapReduce Network, simulation, Facebook trace
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MapReduce Network, simulation, Facebook trace PS-N is close to network proportionality
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MapReduce Network, simulation, Facebook trace PS-N and PS-P reduce shuffle time of small jobs by 10-15X
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Summary Sharing cloud networks is not trivial First step towards a framework to analyze network sharing in cloud computing Key goals (min guarantees, high utilization and proportionality), tradeoffs and properties New allocation policies, superset properties from past work PS-L: link proportionality + high utilization PS-N: restricted network proportional PS-P: min guarantees + high utilization What are the assumptions, drawbacks?
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  • Fall '08
  • Vahdat,A
  • Zagreb, British B class submarine, BWA

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