Abstract
The issue of transaction routing in a heterogeneous database environment is examined where transaction characteristics like reference locality imply that certain processing systems can be identified as being, in general, more suitable than others for a given transaction class. Routing which ignores these distinctions in an attempt to balance system load can degrade system performance. An adaptive routing strategy is considered which: (1) estimates the response time based on a steady-state analysis; (2) monitors how well actual response time conforms to the estimate; and (3) adaptively adjusts future estimates through a feedback control based on (2). It is found that the adaptive strategy greatly enhances performance robustness as compared to the results of the strategy without feedback. The feedback process used alleviates the sensitivity to accurate estimations of workload and system parameters. Various simulation studies are used to illustrate the adaptive strategy's robustness.
Original language | English (US) |
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Title of host publication | Proceedings - International Conference on Distributed Computing Systems |
Editors | Anon |
Place of Publication | Piscataway, NJ, United States |
Publisher | Publ by IEEE |
Pages | 406-413 |
Number of pages | 8 |
State | Published - Jun 1989 |
Externally published | Yes |
Event | 9th International Conference on Distributed Computing Systems - Newport Beach, CA, USA Duration: Jun 5 1989 → Jun 9 1989 |
Other
Other | 9th International Conference on Distributed Computing Systems |
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City | Newport Beach, CA, USA |
Period | 6/5/89 → 6/9/89 |
ASJC Scopus subject areas
- Hardware and Architecture