NDLI: Configuring Fault-Tolerant Servers for Best Performance

Content Provider	IEEE Xplore Digital Library
Author	Szentivanyi, D. Nadjm-Tehrani, S. Noble, J.M.
Copyright Year	2005
Description	Author affiliation: Dept. of Comput. & Inf. Sci., Linkoping Univ. (Szentivanyi, D.; Nadjm-Tehrani, S.)
Abstract	When using primary-backup replication, one checkpoints the primary's state to reduce the failover time to a backup, upon failure of the primary. A trade-off is involved: by frequent checkpointing the response time for requests during "no-failure" intervals is increased. On the other hand, when checkpointing frequency is low, failover takes longer. In this paper we provide a theoretical ground for computing the optimal checkpointing interval that minimizes the average response time of requests, given parameters such as load, failure rate and service rates. We use queuing theory for modelling the support for failover in a system where a logging server records client update operations. The novelty of the model is inclusion of the backlog processing time for requests accumulated during failover. Also, our model considers the waiting times in the queue of the logging server as well as the application server
Starting Page	310
Ending Page	314
File Size	142327
Page Count	5
File Format	PDF
ISBN	0769524249
ISSN	15294188
DOI	10.1109/DEXA.2005.67
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-08-22
Publisher Place	Denmark
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault tolerance Checkpointing Delay Computer crashes Fault tolerant systems Frequency Queueing analysis Availability Information science Mathematics
Content Type	Text
Resource Type	Article

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