A firm real-time system implementation using commercial off-the-shelf hardware and free software
A firm real-time system implementation using commercial off-the-shelf hardware and free software
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使用商业现成硬件和免费软件实现可靠的实时系统
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
D. Niehaus
中科院分区：
文献类型：
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作者：
B. Srinivasan;S. Pather;R. Hill;F. Ansari;D. Niehaus
多媒体和高速网络的出现扩大了应用程序的类别，这些应用程序将硬实时应用程序的定时要求与通常仅在软实时或分时系统上可用的操作系统服务的需要结合起来。这些应用程序被作者描述为可靠的实时性，目前还没有广泛可用的低成本操作系统来支持它们。他们讨论了他们对流行的Linux操作系统所做的修改，使其能够支持这些应用程序相对严格的时间要求，同时仍然允许他们访问所有的Linux服务。以他们坚实的实时系统为基础，他们开发了ATM参考流量系统（ARTS），该系统能够记录和准确地再现分组级ATM流量流，时间分辨率以微秒为单位。该应用程序的有效性以及相对容易的开发说明了该系统的性能和实用性。
The emergence of multimedia and high-speed networks has expanded the class of applications that combine the timing requirements of hard real-time applications with the need for operating system services typically available only on soft-real time or time-sharing systems. These applications, which the authors describe as firm real-time, currently have no widely-available, low-cost operating system to support them. They discuss modifications they have made to the popular Linux operating system that give it the ability to support the comparatively stringent timing requirements of these applications, while still giving them access to the full range of Linux services. Using their firm real-time system as a basis, they have developed the ATM Reference Traffic System (ARTS) that is capable of recording and accurately reproducing packet-level ATM traffic streams with timing resolution in microseconds. The effectiveness of this application, as well as the comparative ease with which it was developed illustrate the performance and utility of the system.