REVIEW of SOME MINIMUM-PROCESS SYNCHRONOUS CHECKPOINTING SCHEMES for MOBILE DISTRIBUTED SYSTEMS
Journal Title: International Journal on Computer Science and Engineering - Year 2010, Vol 2, Issue 4
Abstract
The term Distributed Systems is used to describe a system with the following characteristics: i) it consists of several computers that do not share memory or a clock, ii) the computers ommunicate with each other by exchanging messages over a communication network, iii) each computer has its own emory and runs its own operating system. A mobile computing system is a distributed system where some of processes are running on mobile hosts (MHs), whose location in the network changes with time. The number of processes that take checkpoints is minimized to 1) avoid awakening of MHs in doze mode of eration, 2) minimize thrashing of MHs with checkpointing activity, 3) save limited battery life of MHs and low bandwidth of wireless channels. In minimum-process checkpointing otocols, some useless checkpoints are taken or blocking of processes takes place. To take a heckpoint, an MH has to transfer a large mount of checkpoint data to its local MSS over the wireless etwork. Since the wireless network has low andwidth and Hs have low computation power, all-process heckpointing will waste the scarce resources of the mobile ystem on every checkpoint. Minimum-process coordinated heckpointing is a preferred approach for mobile distributed ystems. In this paper, we discuss various existing minimum- ocess checkpointing protocols for mobile distributed ystems.
Authors and Affiliations
Preeti Gupta , Parveen Kumar , Anil Kumar Solanki
Keywords
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