QoS control based on query response time prediction

Authors:
Mario Milicevic;Mirta Baranovic;Vedran Batos
Affiliations:
Department of Electrical Engineering and Computing, University of Dubrovnik, Dubrovnik, Croatia;Department of Applied Mathematics, Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb, Croatia;Department of Electrical Engineering and Computing, University of Dubrovnik, Dubrovnik, Croatia
Venue:
ICCOMP'05 Proceedings of the 9th WSEAS International Conference on Computers
Year:
2005

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Abstract

User oriented Quality of Service (QoS) of On-Line Transaction Processing (OLTP) systems (or Data Warehouse (DW)) is determined with a response time, availability, consistency and currency. In this paper we consider the influence of the system load and the system throughput on the response time, as well as a possibility of the accurate response time prediction - whereby that mechanism may be a foundation for (automatized) decision-making for a query (or DB procedure) scheduling. The possible application of proposed method can be the estimation of the optimal moment for the data transfer from OLTP system into DW or the appropriate moment for the complex query execution.