Temporal isolation with preemption delay accounting

J. Marinho, Vincent Nélis, Stefan M. Petters
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引用次数: 2

Abstract

Reservation systems are generally employed to enforce temporal isolation between applications. In the real-time context the corresponding temporal isolation requires not only the consideration of the direct interference due to execution of higher priority tasks, but also the indirect cost of e.g. cache-related preemption delay. The accounting of this in a server-based implementation of temporal isolation poses special challenges, in particular when misbehaving in the form of overruns and violation of the minimum inter-arrival time of an application are to be covered. We present a novel approach to extend the fault coverage and reduce the pessimism when compared to the state of the art. Furthermore we demonstrate that the extra implementation of the introduced mechanisms over the state of the art can be very low on complexity.
具有抢占延迟计数的时间隔离
预订系统通常用于强制应用程序之间的时间隔离。在实时环境中,相应的时间隔离不仅需要考虑由于执行高优先级任务而产生的直接干扰,还需要考虑与缓存相关的抢占延迟等间接成本。在基于服务器的时间隔离实现中对这种情况进行核算带来了特殊的挑战,特别是当要涵盖以超时和违反应用程序的最小间隔到达时间为形式的不当行为时。与现有技术相比,我们提出了一种新的方法来扩大故障覆盖范围并减少悲观情绪。此外,我们还证明,在现有技术的基础上,引入的机制的额外实现可以非常低的复杂性。
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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