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A Nonlinear Dynamic Model for Software Aging in Service-Oriented Software

机译：面向服务的软件中的软件老化非线性动态模型

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摘要

Software aging results from runtime environment degradation, and is significantly correlated with available computing resources. A set of variables evolving with time can describe the running state of computer system. Consequently, software aging is analogous to evolution of a dynamic system in this paper. We construct a nonlinear dynamic model based on the experimental observations. First, we assume the mathematical form of nonlinear dynamic equations. Then, we select resource parameters which can reflect the "health" of the whole computer system as variables of our model. Finally, we estimate the values of each parameters in our model using nonlinear inversion. Our approach is validated by two different datasets. The dynamic model can describe the evolution of software aging and interpret the interplay of various resource parameters. Moreover, this model can be used to forecast abrupt state degradation and help us to explore the root cause of software aging. For example, by comparing the output of our model against real values, with a suspected "aging factor" as input, we can identify which resource variable is the root cause of injuring the stability of computer system.
机译：软件老化是由运行时环境降级导致的，并且与可用的计算资源显着相关。随时间变化的一组变量可以描述计算机系统的运行状态。因此，软件老化类似于本文中动态系统的演变。我们基于实验观察结果构建了非线性动力学模型。首先，我们假设非线性动力学方程的数学形式。然后，我们选择可以反映整个计算机系统“健康”的资源参数作为模型变量。最后，我们使用非线性反演估计模型中每个参数的值。我们的方法由两个不同的数据集验证。动态模型可以描述软件老化的演变，并解释各种资源参数之间的相互作用。此外，该模型可用于预测突然的状态退化，并帮助我们探究软件老化的根本原因。例如，通过将模型的输出与实际值进行比较，并以可疑的“老化因子”作为输入，我们可以确定哪个资源变量是损害计算机系统稳定性的根本原因。

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  • 来源
    《Journal of software》 |2014年第9期|2260-2266|共7页
  • 作者

    Yun-Fei Jia; Hui Xu; Ren-Biao Wu;

  • 作者单位

    Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin, China;

    Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin, China;

    Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Software aging; software maintenance; dynamic system;

    机译：软件老化;软件维护;动态系统;

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