Capacity Planning for Web Services
Capacity Planning for Web Services
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DOI：
10.1007/3-540-45798-4_7
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发表时间：
2002-09
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通讯作者：
Virgílio A. F. Almeida
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文献类型：
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作者：
Virgílio A. F. Almeida
容量规划是管理Web服务质量的一个强大工具。本教程介绍了一种适用于基于Web的环境的容量规划方法，其中的主要步骤包括：了解环境、描述工作负载、建模工作负载、验证和校准模型、预测工作负载、预测性能、分析性价比计划以及建议操作。主要步骤基于两个模型：工作负载模型和性能模型。第一个模型的结果从理解和表征的工作负载和第二个从系统行为的定量描述。本教程强调模型的作用，而不是依靠直觉、特别的过程和经验法则来理解和分析Web服务的行为，它是处理容量规划问题的统一和正式的方法。
Capacity planning is a powerful tool for managing quality of service on the Web. This tutorial presents a capacity planning methodology for Web-based environments, where the main steps are: understanding the environment, characterizing the workload, modeling the workload, validating and calibrating the models, forecasting the workload, predicting the performance, analyzing the cost-performance plans, and suggesting actions. The main steps are based on two models: a workload model and a performance model. The first model results from understanding and characterizing the workload and the second from a quantitative description of the system behavior. Instead of relying on intuition, ad hoc procedures and rules of thumb to understand and analyze the behavior of Web services, this tutorial emphasizes the role of models, as a uniform and formal way of dealing with capacity planning problems.