Performance evaluation for distributed system components

Proceedings of IEEE International Workshop on System Management Pub Date : 1996-06-19 DOI:10.1109/IWSM.1996.534143

P. Dini, G. von Bochmann, R. Boutaba

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引用次数: 4

Abstract

The performance evaluation of hardware and software system components is based on statistics that are long views on the behavior of these components. Since system resources may have unexpected behavior, relevant current information becomes useful in the management process of these systems, especially for data gathering, reconfiguration, and fault detection activities. Actually, there are few criteria to property evaluate the current availability of component services within distributed systems. Hence, the management system can not realistically select the most suitable decision for configuration. In this paper, we present a proposal for a continuous evaluation of component behaviour related to state changes. This model is further extended by considering different categories of events concerning the degradation of the operational state or usage state. Our proposals are based on the possibility of computing at the component level, the current availability of this component by continuous evaluation. we introduce a several current availability features and propose formula to compute them. Other events concerning a managed object are classified as warning, critical or outstanding, which leads to a more accurate operational view on a component. Several counter-based events are thresholded to improve predictable reconfiguration decisions concerning the usability of a component. The main goal is to offer to the management system current relevant information which can be used within management policies the flexible polling frequency tuned with respect to the current evaluation, or particular aspects related to dynamic tests within distributed systems. Implementation issues with respect to the standard recommendations within distributed systems are presented. Finally we describe how the reconfiguration management systems can use these features in order to monitor, predict, improve the existing configuration, or accommodate the polling frequency according to several simple criteria.

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分布式系统组件的性能评估

硬件和软件系统组件的性能评估是基于对这些组件行为的长期视图的统计数据。由于系统资源可能有意想不到的行为，相关的当前信息在这些系统的管理过程中变得有用，特别是对于数据收集、重新配置和故障检测活动。实际上，很少有标准来评估分布式系统中组件服务的当前可用性。因此，管理系统不能现实地选择最合适的决策进行配置。在本文中，我们提出了一个与状态变化相关的组件行为的连续评估的建议。通过考虑与运行状态或使用状态退化有关的不同类别的事件，进一步扩展了该模型。我们的建议是基于在组件级别计算的可能性，通过持续评估该组件的当前可用性。我们介绍了几个当前可用性特征，并提出了计算它们的公式。与托管对象有关的其他事件被分类为警告、关键或突出，从而可以对组件进行更准确的操作视图。设置了几个基于计数器的事件阈值，以改进与组件可用性有关的可预测的重新配置决策。主要目标是向管理系统提供当前相关的信息，这些信息可以在管理策略中使用，根据当前评估调整灵活的轮询频率，或者在分布式系统中与动态测试相关的特定方面。介绍了分布式系统中有关标准建议的实现问题。最后，我们描述了重新配置管理系统如何使用这些特性，以便根据几个简单的标准监视、预测、改进现有配置或适应轮询频率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of IEEE International Workshop on System Management

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