Paper Info
Title
Adaptive Management of Composite Services under Percentile-Based Service Level Agreements
Abstract
We present; a brokering service for the adaptive management of composite services. The goal of this broker is to dynamically adapt at runtime the composite service configuration, to fulfill the Service Level Agreements (SLAs) negotiated with different classes of requestors, despite variations of the operating environment. Differently from most of the current approaches, where the performance guarantees are characterized only in terms of bounds on average QoS metrics, we consider SLAs that also specify upper bounds on the percentile of the service response time, which are expected to better capture user perceived QoS. The adaptive composite service management is based on a service selection scheme that minimizes the service broker cost while guaranteeing the negotiated QoS to the different service classes. The optimal service selection is determined by means of a linear programming problem that can be efficiently solved. As a result, the proposed approach is scalable and lends itself to an efficient implementation.
Year
DOI
Venue
2010
10.1007/978-3-642-17358-5_26
Lecture Notes in Computer Science
Keywords
DocType
Volume
service management,linear program,upper bound
Conference
6470
ISSN
Citations 
PageRank 
0302-9743
16
0.79
References 
Authors
11
4
Name
Order
Citations
PageRank
Valeria Cardellini11514106.12
Emiliano Casalicchio2108065.44
Vincenzo Grassi3174681.24
Francesco Lo Presti4107378.83