منابع مشابه
Resource-aware Speculative Prefetching in Wireless Networks
Mobile users connected to wireless networks expect performance comparable to those on wired networks for interactive multimedia applications. Satisfying Quality of Service (QoS) requirements for such applications in wireless networks is a challenging problem due to limitations of low bandwidth, high error rate and frequent disconnections of wireless channels. In addition, wireless networks suff...
متن کاملEffect of Speculative Prefetching on Network Load in Distributed Systems
Previous studies in speculative prefetching focus on building and evaluating access models for the purpose of access prediction. This paper, on the other hand, investigates the performance of speculative prefetching. When prefetching is performed speculatively, there is bound to be an increase in the network load. Furthermore, the prefetched items must compete for space with existing cache occu...
متن کاملA Performance Model of Speculative Prefetching in Distributed Information Systems
Previous studies in speculative prefetching focus on building and evaluating access models for the purpose of access prediction. This paper investigates a complementary area which has been largely ignored, that of performance modelling. We use improvement in access time as the performance metric, for which we derive a formula in terms of resource parameters (time available and time required for...
متن کاملSpeculative prefetching of optional locks in distributed systems
We present a family of methods for speeding up distributed locks by exploiting the uneven distribution of both temporal and spatial locality of access behaviour of many applications. In the worst case, some of our methods will not produce higher network latencies than equivalent conventional distributed locking methods. In best case, the total number of messages can be constantly bounded, appro...
متن کاملJob-Speculative Prefetching: Eliminating Page Faults From Context Switches in Time-Shared Systems
When multiple applications have to time-share limited physical memory resources, they can incur significant performance degradation at the beginning of their respective time slices due to page faults. We propose a method to significantly improve memory system and overall performance in time-shared computers using job-speculative prefetching. While a given job or jobs are running, the operating ...
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ژورنال
عنوان ژورنال: ACM SIGMOBILE Mobile Computing and Communications Review
سال: 2002
ISSN: 1559-1662,1931-1222
DOI: 10.1145/565702.565706