The design and performance of a real-time I/O subsystem
The design and performance of a real-time I/O subsystem
复制标题
实时I/O子系统的设计与性能
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
D. Levine
中科院分区：
文献类型：
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作者：
F. Kuhns;D. Schmidt;D. Levine
本文介绍了一个真实的时间I/O（RIO）子系统，支持运行在现成的硬件和软件上的真实的时间应用程序的设计和性能。本文对真实的I/O子系统的研究做出了两个贡献。首先，它描述了RIO如何支持端到端的，优先级的流量，以限制每个优先级的I/O利用率，并消除了I/O子系统中的优先级反转的关键来源。其次，它说明了真实的时间I/O子系统如何能够减少高优先级客户端之间的端到端通信的延迟界限，而不过度地惩罚低优先级和尽力而为的客户端。
The paper describes the design and performance of a real time I/O (RIO) subsystem that supports real time applications running on off-the-shelf hardware and software. The paper provides two contributions to the study of real time I/O subsystems. First it describes how RIO supports end-to-end, prioritized traffic to bound the I/O utilization of each priority class and eliminates the key sources of priority inversion in I/O subsystems. Second, it illustrates how a real time I/O subsystem can reduce latency bounds on end-to-end communication between high-priority clients without unduly penalizing low priority and best-effort clients.