Searching for authors named "Dennis Geels" – sorted by Relevance.
17 documents found, showing 1 through 10.
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Mechanism Design and the Replica Management Problem in Oceanstore
- …We investigate possible Game Theoretic solutions to the problem of Replica Management in OceanStore. We formulate an appropriate Mechanism Design problem. We then evaluate previous work on related topics such as multicast cost sharing, internet congestion, and data management economic models. We sum…
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Data Replication in OceanStore
- …We present the design and implementation of the data replication subsystem of OceanStore, a global-scale storage system. Our system automatically replicates data on or near the the client machines where the data is accessed, in order to improve locality, scalability, and availability. These replicas…
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Space-Optimized Markov Chain Model for File Prefetching
- …This project investigated the ability of a Markov Chain model to predict file access patterns in OceanStore, a global-scale storage system currently under development. Because a naive implementation of the transition matrix is an inefficient use of memory, we evaluated a simple sparse-matrix techniq…
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Replica Management Should Be A Game
- …We believe that large-scale replica management solutions should be based on an economic model. In this paper, we discuss the benefits provided by an economic approach and outline important directions for future research.…
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Exploring tradeoffs in failure detection in routing overlays
- …One of the key reasons overlay networks are seen as an excellent platform for large scale distributed systems is their resilience in the presence of node failures. This resilience rely on accurate and timely detection of node failures. Despite the prevalent use of keep-alive algorithms in overlay ne…
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Introspective Replica Management
- … Replica Management controls the number and location of copies of data in a distributed, highly available system. We developed and evaluated an introspective replica management scheme suitable for the OceanStore project. The target environment is federated, insecure, read/write, extremely wide area…
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Handling Churn in a DHT
- …This paper addresses the problem of churn---the continuous process of node arrival and departure---in distributed hash tables (DHTs). We argue that DHTs should perform lookups quickly and consistently under churn rates at least as high as those observed in deployed P2P systems such as Kazaa. We then…
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Clump: Improving File System Performance Through Adaptive Optimizations
- …Recent years have seen a meteoric rise in microprocessor performance. Overall computer system performance, however, has not kept pace with that of its most glamorous component. One key bottleneck in system performance is file system I/O [17]. This paper investigates methods for improving file syste…
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Pond: the OceanStore Prototype
- …OceanStore is an Internet-scale, persistent data store designed for incremental scalability, secure sharing, and long-term durability. Pond is the OceanStore prototype; it contains many of the features of a complete system including location-independent routing, Byzantine update commitment, push-bas…
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Maintenance-Free Global Data Storage
- …F11.88> Storage-level management is the set of operations required to maintain the integrity and access performance of raw data, without reference to the semantics of the information that data represents. Proper storage-level management yields a stable set of bits (or stable store) that can be utili…
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