• Publications
  • Influence
Predicting Internet network distance with coordinates-based approaches
  • T. Ng, Hui Zhang
  • Computer Science
  • Proceedings.Twenty-First Annual Joint Conference…
  • 7 November 2002
TLDR
This work proposes using coordinates-based mechanisms in a peer-to-peer architecture to predict Internet network distance (i.e. round-trip propagation and transmission delay), and proposes the GNP approach, based on absolute coordinates computed from modeling the Internet as a geometric space. Expand
Packet fair queueing algorithms for wireless networks with location-dependent errors
TLDR
This work identifies a set of properties, called channel-condition independent fair (CIF), that a packet fair queueing algorithm should have in a wireless environment and derives a novel algorithm based on start-timeFair queueing, called CIF-Q, that achieves all the above properties. Expand
The Impact of Virtualization on Network Performance of Amazon EC2 Data Center
TLDR
The results show that even though the data center network is lightly utilized, virtualization can still cause significant throughput instability and abnormal delay variations. Expand
c-Through: part-time optics in data centers
TLDR
This work proposes a hybrid packet and circuit switched data center network architecture (or HyPaC) which augments the traditional hierarchy of packet switches with a high speed, low complexity, rack-to-rack optical circuit-switched network to supply high bandwidth to applications. Expand
REUNITE: a recursive unicast approach to multicast
TLDR
REUNITE supports load balancing and graceful degradation such that when a router does not have resources to support additional multicast groups, the branching can be automatically migrated to other less-loaded routers. Expand
A Network Positioning System for the Internet
  • T. Ng, Hui Zhang
  • Computer Science
  • USENIX Annual Technical Conference, General Track
  • 27 June 2004
TLDR
This paper proposes a hierarchical network positioning architecture that maintains consistency while enabling decentralization, a set of adaptive decentralized algorithms to compute and maintain accurate, stable network positions, and presents a prototype system deployed on PlanetLab nodes that can be used by a variety of applications. Expand
Maestro: A System for Scalable OpenFlow Control
TLDR
This paper proposes Maestro which keeps the simple programming model for programmers, and exploits parallelism in every corner together with additional throughput optimization techniques, and experimentally shows that the throughput of Maestro can achieve near linear scalability on an eight core server machine. Expand
Towards network triangle inequality violation aware distributed systems
TLDR
This paper proposes a TIV alert mechanism that can inform neighbor selection mechanisms to avoid the pitfalls caused by TIVs and improve their effectiveness and investigates the properties of triangle inequality violation in Internet delays. Expand
Programming your network at run-time for big data applications
TLDR
This study uses Hadoop as an example to discuss the integrated network control architecture, job scheduling, topology and routing configuration mechanisms for Hadoops, and suggests that such an integrated control has great potential to improve application performance with relatively small configuration overhead. Expand
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