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2004

A Case for Queue-to-Queue, Back-Pressure-Based Congestion Control for Grid Networks

11 years 6 months ago
A Case for Queue-to-Queue, Back-Pressure-Based Congestion Control for Grid Networks
Standard "new-Reno" TCP faces some performance limitations in very high throughput IP WAN networks, (e.g., computing grids) due to a long end-to-end congestion feedback loop and a conservative behaviour with respect to congestion. We investigate breathing new life into the following idea: implement aggressive congestion control via hop-by-hop, link-level flow control (back-pressure). Studying TCP's behaviour at the packet level on an emulated WAN link allows us to explain: a) the dependence between TCP performance and burstiness at the Ethernet level; b) the performance and fairness gains obtained by the activation of Ethernet 802.3x flow control. Recognising that data moves not from hop to hop but from queue-to-queue, regardless of the layer, we propose to refine previous hop-by-hop approaches to a new "Network of Queues" (NoQ) approach, where each network buffer protects itself against overflow, thus preventing global network congestion. We finally identify a...
Marc Herbert, Pascale Vicat-Blanc Primet
Added 31 Oct 2010
Updated 31 Oct 2010
Type Conference
Year 2004
Where PDPTA
Authors Marc Herbert, Pascale Vicat-Blanc Primet
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