Please use this identifier to cite or link to this item: http://localhost:8081/xmlui/handle/123456789/9686
Title: CHECK POINTING AND REOCVERY SCHEMES FOR MOBILE SYSTEMS
Authors: Vishwakarma, Pankaj
Keywords: ELECTRONICS AND COMPUTER ENGINEERING;CHECK POINTINg;REOCVERY SCHEMES;MOBILE SYSTEMS
Issue Date: 2000
Abstract: Distributed mobile system consists of mobile stations and fixed stations communicating with each other. Many applications e.g. airline reservation running on such system needs to be highly reliable. Checkpointing and Rollback recovery are techniques used to provide fault tolerance and reliability. These techniques require that global state of the application should be checkpointed from time to time. The schemes that checkpoint the global state can broadly be classified into synchronous and asynchronous. In mobile distributed systems, due to long disconnection periods of mobile hosts, synchronous checkpointing is not very attractive and asynchronous checkpointing has the disadvantage of domino effect. Therefore hybrid checkpointing schemes have been proposed in the literature as an alternative for these systems. In this dissertation, we study the performance of a hybrid checkpointing scheme, which is a combination of synchronous and asynchronous checkpointing scheme. We also propose a modified checkpointing scheme that forces mobile hosts to take checkpoints when certain condition is satisfied. Simulation results show that message processing time is reduced due to this modification. We also compare the performance of this system with the system having all fixed hosts.
URI: http://hdl.handle.net/123456789/9686
Other Identifiers: M.Tech
Research Supervisor/ Guide: Mishra, Manoj
metadata.dc.type: M.Tech Dessertation
Appears in Collections:MASTERS' DISSERTATIONS (E & C)

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