Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 19 of 19 for “"PlanetLab"”.
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Exploiting System Diversity in Peer-to-Peer Publish -Subscribe Systems
… have been comprehensively evaluated via both PlanetLab deployment and simulation. Our deployments used up to 400 PlanetLab servers world-wide. Our largest simulations model 10, 000 nodes. Our experimental methodology is constructed using an extensive amount of real-world traces. For instance, …
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Exploiting System Diversity in Peer-to-Peer Publish-Subscribe Systems
… rapidly collect logs from either multiple PlanetLab hosts or multi-site cloud computing infrastructures. It uses a novel source-2-source (s2s) overlay to speed up the transfer of file blocks towards the sink. Intuitively, the s2s overlay facilitates a source node (with a congested path to …
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Efficient on -Demand Operations in Large-Scale Infrastructures
… over real testbeds such as Emulab and PlanetLab.
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A publish-subscribe implementation of network management
… of this design, we configured a network of PlanetLab nodes and conducted experiments involving a variety of le sizes and source-destination pairs. The results suggest that the system's performance is not only comparable to existing le transfer services, but that the system also introduces …
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Securing wide-area storage in WheelFS
… mutually-distrustful clients. Experiments on PlanetLab, a wide-area testbed, shows that wide-area file transfer and cooperative fetch operations take 1.5-2 times as long with these security measures compared to the unsecured prototype.
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WhanauSIP : a secure peer-to-peer communications platform
… and security evaluations performed on the PlanetLab network demonstrate that the majority of resource lookups return within five seconds. These results indicate that WhanauSIP delivers practical performance with respect to call session initialization latency for voice-over-IP, without …
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Cheleby: Internet Topology Collection System
… topology information. The system is deployed on PlanetLab testbed and utilizes hundreds of systems scattered around the world. Cheleby is designed to meet the topological information needs of the researchers working on the Internet measurements, especially those who need link level topology maps …
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VMCStore : a TPM-based trusted storage framework
… algorithms, which have been tested over PlanetLab and analyzed in this thesis. The VMCStore framework has been developed in a modular fashion, allowing the user to develop and test new applications and validation algorithms.
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Efficient On-Demand Operations in Large-Scale Infrastructures
… over real testbeds such as Emulab and PlanetLab.
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Flexible, wide-area storage for distributed systems using semantic cues
… as a user-level file system and is deployed on PlanetLab and Emu-lab.
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SpiderNet: A Quality -Aware Service Composition Middleware
… using both large-scale simulations and PlanetLab-based prototype implementation. We also implement a set of distributed multimedia services on top of SpiderNet as proof-of-concept application examples. Our experimental results demonstrate the implementation feasibility and performance …
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Parsimonious Service Replication for Tolerating Malicious Attacks in Asynchronous Environments
… representative application in both LAN and WAN (Planetlab) settings under both fault-free and controlled fault injection scenarios.
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The Design of A Multi-party VoIP Conferencing System
… We collect real Internet traces from the PlanetLab and classify them into different categories according to the traffic behavior. After studying the conversational dynamics in the multi-party system, we identify user-observable metrics that affect the perception of conversational quality …
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Design and applications of a secure and decentralized Distributed Hash Table
… Sybil attacks. Experimental results using PlanetLab demonstrate that an implementation of the Whanau protocol can handle reasonable levels of churn.
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ISP-Aided Neighbour Selection in Peer-to-Peer Systems
… Graph-Experimente, Testbed-Implementierungen, Planetlab-Installationen und Paketebene-Simulationen zum Einsatz. Die Ergebnisse der Graph-Experimente zeigen, dass P2P-Nutzer unter der Verwendung des Orakels in der Lage sind, die meisten Peerings innerhalb der ISP-Grenzen zu halten, ohne die …
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A distributed systems infrastructure for open public display research networks
… research communities, e.g. in the context of PlanetLab or the Grid, have identified the benefits of creating open, shared, medium or large-scale research infrastructures, a similar move has so far not taken place in the context of public display networks. This thesis aims to provide the …
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Analysis of bandwidth attacks in a bittorrent swarm
… of 32 peers and a global testbed called PlanetLab with 300 peers. Our results show that three malicious peers can degrade the download rate by up to 414.99 % for all peers. Combined with a Sybil attack with as many attackers as leechers, it is possible to degrade the download rate by more …
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Finding perceptually optimal operating points of a real time interactive video-conferencing system
… randomly or based on packet traces collected via PlanetLab. The processed videos will then be pieced together side-by-side to give the viewpoint of a third-party observing the video conversation from the site of the first speaker. Hence the first speaker will be observed to have a faster reaction …
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Energy Efficient Resource Allocation for Virtual Network Services with Dynamic Workload in Cloud Data Centers
… The extensive results from both simulations and Planetlab experiments exhibit that the performance is near optimal for most of the practical conditions.