The Polling Effect on the Schedulability of Distributed Real-Time Systems

被引：0

作者：

Perez, Hector ^{[1
]}

Javier Gutierrez, J. ^{[1
]}

Gonzalez Harbour, Michael ^{[1
]}

Carlos Palencia, J. ^{[1
]}

机构：

[1] Univ Cantabria, Software Engn & Real Time Grp, E-39005 Santander, Spain

来源：

RELIABLE SOFTWARE TECHNOLOGIES - ADA-EUROPE 2016 | 2016年 / 9695卷

关键词：

Distributed systems; Real-time; Schedulability analysis; Embedded systems; Polling;

D O I：

10.1007/978-3-319-39083-3_12

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

The usage of polling tasks continues to be quite common in today's distributed real-time systems, despite the availability of event-driven software mechanisms and response time analysis techniques that can be applied to this kind of systems. This paper proposes a model for polling tasks that allows current response time analysis techniques for event-driven distributed systems to be applied, and it also studies the impact that polling has in the schedulability of a distributed system, using analytic results. A performance evaluation on an Ada-based platform is also provided. As expected, polling produces response times much higher than a pure event-driven alternative. The analysis techniques and the evaluation presented in the paper allows engineers to assess the negative effect of polling on the schedulability of distributed real-time systems.

引用

页码：179 / 194

页数：16

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