Improving performance of composite web services

被引：1

作者：

Dyachuk, Dmytro ^{[1
]}

Deters, Ralph ^{[1
]}

机构：

[1] Univ Saskatchewan, Dept Comp Sci, Saskatoon, SK S7N 0W0, Canada

来源：

IEEE INTERNATIONAL CONFERENCE ON SERVICE-ORIENTED COMPUTING AND APPLICATIONS, PROCEEDINGS | 2007年

关键词：

D O I：

10.1109/SOCA.2007.25

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

Composite Web Services (CWS) aggregate multiple Web Services in one logical unit in order to accomplish a complex task (e.g. business process). This orchestration is typically achieved by use of a workflow language. Workflows facilitate the process of aggregating existing atomic and other CWS into new service layers. However due to numerous consumers and possible fluctuations in their arrivals the services performance under various loads becomes an important issue. Service compositions exposed to transient overloads expose problematic behaviour due to complex interactions of the underlying services. This in its turn usually results in the performance degradation. This paper proposes employing scheduling service requests in order to improve the overall CWS performance in overload situations. Different scheduling policies are evaluated for the CWS workflow patterns sequence and split-synchronization. In addition the paper presents scheduling policy called Augmented Least Work Reaming (ALWKR), that extends LWKR by taking advantage of existing workflow topology information.

引用

页码：147 / +

页数：2

共 18 条

[1]

ABDELKARIM SP, 2006, ICWS, P781

[2]

Cherkasova L, 1998, LECT NOTES COMPUT SC, V1401, P305, DOI 10.1007/BFb0037157

[3]

Conway R.W., 1967, Theory of Scheduling

[4]

DYACHUK D, 2007, IN PRESS DEST 2007 2

[5]

DYACHUK D, 2007, IN PRESS 3 INT C WEB

[6]

DYACHUK D, 2007, IN PRESS IEEE INT C

[7]

Dyachuk D, 2006, LECT NOTES COMPUT SC, V4277, P19

[8]

Elnikety Sameh, 2004, P 13 INT C WORLD WID, P276

[9] wsBus: QoS-aware middleware for reliable web services interactions [J].

Erradi, A ;

Maheshwari, P .

2005 IEEE International Conference on e-Technology, e-Commerce and e-Service, Proceedings, 2005, :634-639

[10] The design and performance of a real-time CORBA scheduling service [J].

Gill, CD ;

Levine, DL ;

Schmidt, DC .

REAL-TIME SYSTEMS, 2001, 20 (02) :117-154

← 1 2 →