Properties Min Guarantee Link Proportionality High Utilization Congestion

Properties min guarantee link proportionality high

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Properties Min Guarantee Link Proportionality High Utilization Congestion Proportionality Network Proportionality Work Conservation Utilization Incentives Comm-Pattern Independence Symmetry
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Symmetry Swapping demand directions preserves allocation Per source allocation lacks this property (per source = give equal shares to each source) ß Same Bw à ß Same Bw à
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Goals, Tradeoffs, Properties Min Guarantee Link Proportionality High Utilization Congestion Proportionality Network Proportionality Work Conservation Utilization Incentives Comm-Pattern Independence Symmetry
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Outline 1. Framework for understanding network sharing in cloud computing Goals, tradeoffs, properties 2. Solutions for sharing the network Existing policies in this framework New policies representing different points in the design space
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Per Flow (e.g. today) Min Guarantee Link Proportionality High Utilization Congestion Proportionality Network Proportionality Work Conservation Utilization Incentives Comm-Pattern Independence Symmetry
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Per Source (e.g., Seawall [NSDI’11]) Min Guarantee Link Proportionality High Utilization Congestion Proportionality Network Proportionality Work Conservation Utilization Incentives Comm-Pattern Independence Symmetry
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Static Reservation (e.g., Oktopus [Sigcomm’11]) Min Guarantee Link Proportionality High Utilization Congestion Proportionality Network Proportionality Work Conservation Utilization Incentives Comm-Pattern Independence Symmetry
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New Allocation Policies 3 new allocation policies that take different stands on tradeoffs
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Proportional Sharing at Link-level (PS-L) Min Guarantee Link Proportionality High Utilization Congestion Proportionality Network Proportionality Work Conservation Utilization Incentives Comm-Pattern Independence Symmetry
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Proportional Sharing at Link-level (PS-L) Per tenant WFQ where weight = # tenant’s VMs on link A B WQ A = #VMs A on L Bw B Bw A = #VMs A on L #VMs B on L Can easily be extended to use heterogeneous VMs (by using VM weights)
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Proportional Sharing at Network-level (PS-N) Min Guarantee Link Proportionality High Utilization Congestion Proportionality Network Proportionality Work Conservation Utilization Incentives Comm-Pattern Independence Symmetry
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Proportional Sharing at Network-level (PS-N) Congestion proportionality in severely restricted context Per source-destination WFQ, total tenant weight = # VMs
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Proportional Sharing at Network-level (PS-N) WQ A1 à A2 = 1/N A1 + 1/N A2 A 1 A 2 N A2 N A1 Total WQ A = #VMs A Congestion proportionality in severely restricted context Per source-destination WFQ, total tenant weight = # VMs
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Proportional Sharing at Network-level (PS-N) WQ B WQ A = #VMs A #VMs B Congestion proportionality in severely restricted context Per source-destination WFQ, total tenant weight = # VMs
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Proportional Sharing on Proximate Links (PS-P) Min Guarantee Link Proportionality High Utilization Congestion Proportionality Network Proportionality Work Conservation Utilization Incentives Comm-Pattern Independence Symmetry
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Assumes a tree-based topology: traditional, fat-tree, VL2 (currently working on removing this assumption) Proportional Sharing on Proximate Links (PS-P)
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