SFERA: A Simulation Framework for the Performance Evaluation of Restart Algorithms in Service-Oriented Systems

SFERA: A Simulation Framework for the Performance Evaluation of Restart Algorithms in Service-Oriented Systems
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SFERA:面向服务系统中重启算法性能评估的仿真框架

DOI:
10.1016/j.entcs.2012.11.014
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Wolter
Wolter
中科院分区:
--
文献类型:
--
作者:
Danilkina;Reinecke;Wolter

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在面向服务的系统中,故障检测和定位并不简单,需要客户端容错技术来减少故障对用户体验的服务质量的影响。重新启动是一种众所周知的客户端技术,用于提高性能和服务可用性。通过重新启动,完成时间超过超时的任务将由客户机重新发出,目标是在下一次尝试时获得更短的完成时间。重新启动的评估应该通过分析、模拟和测量相结合的方式进行。在本文中,我们提出了用于模拟复杂SOA系统中重启的SFERA框架。我们通过评估复杂SOA系统中的最佳重启超时来说明SFERA特性。我们使用不同的场景模拟SOA系统,并通过与SOA测试平台的测量相适应的阶段类型分布对组件响应时间进行建模。我们观察并比较不同场景下的完成时间。
In service-oriented systems, fault detection and localisation are not straightforward, and client-side fault-tolerance techniques are required to reduce the impact of faults on the quality of service experienced by the user. Restart is a well-known client-side technique for improving performance and service availability. With restart, tasks whose completion-time exceeds a timeout are re-issued by the client, with the goal of obtaining a shorter completion-time on the next attempt. Evaluation of restart should be performed by a combination of analysis, simulation, and measurement. In this paper we present the SFERA framework for simulation of restart in complex SOA systems. We illustrate SFERA features with an evaluation of the optimal restart timeout in a complex SOA system. We simulate a SOA system using different scenarios and model component response-times by phase-type distributions fitted to measurements from a SOA testbed. We observe and compare completion times for different scenarios.
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