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A Configurable Hardware Scheduler for Real-Time Systems.pdf
(86 KB, 下载次数: 74)
摘要
Many real-time applications require a high-resolution
time tick in order to work properly. However, supporting
a high-resolution time tick imposes a very high overhead
on the system. In addition, such systems may need to
change scheduling discipline from time to time to satisfy
some user requirements such as Quality of Service (QoS).
The dynamic changing of the scheduling discipline is usually associated with delays during which some deadlines
might be missed.
In this paper, we present a configurable hardware
scheduler architecture which minimizes the processor
time wasted by the scheduler and time-tick processing.
The hardware scheduler is flexible and provides three
scheduling disciplines: priority-based, rate monotonic
and earliest deadline first. The scheduler in hardware
also provides accurate timing. The scheduling mode can
be changed at runtime, providing support for a wide
range of applications on the same device. The hardware
scheduler is provided in the form of an Intellectual Property (IP) block that can be customized according to the
designer’s input, to suite a certain application, by a tool
we have developed |
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发表于 2014-3-31 22:12:15
