Name
Abstract | ||
|---|---|---|
Most datacenter network (DCN) designs focus on maximizing bisection bandwidth rather than minimizing server-to-server latency. We explore architectural approaches to building low-latency DCNs and introduce Quartz, a design element consisting of a full mesh of switches. Quartz can be used to replace portions of either a hierarchical network or a random network. Our analysis shows that replacing high port-count core switches with Quartz can significantly reduce switching delays, and replacing groups of top-of-rack and aggregation switches with Quartz can significantly reduce congestion-related delays from cross-traffic. We overcome the complexity of wiring a complete mesh using low-cost optical multiplexers that enable us to efficiently implement a logical mesh as a physical ring. We evaluate our performance using both simulations and a small working prototype. Our evaluation results confirm our analysis, and demonstrate that it is possible to build low-latency DCNs using inexpensive commodity elements without significant concessions to cost, scalability, or wiring complexity. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1145/2619239.2626332 | SIGCOMM |
Keywords | Field | DocType |
latency,optical technologies,wdm,network topology,datacenter | Wavelength-division multiplexing,Random graph,Computer science,Latency (engineering),Computer network,Multiplexer,Bisection bandwidth,Quartz,Latency (engineering),Distributed computing,Scalability | Conference |
Volume | Issue | ISSN |
44 | 4 | 0146-4833 |
Citations | PageRank | References |
23 | 0.82 | 22 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yunpeng James Liu | 1 | 23 | 0.82 |
| Peter Xiang Gao | 2 | 299 | 13.04 |
| Bernard Wong | 3 | 528 | 26.80 |
| Srinivasan Keshav | 4 | 3778 | 761.32 |