February 2015
Intermediate to advanced
686 pages
18h 52m
English
Content preview from Real-Time Embedded Systems
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Chapter 17
Real-Time Scheduling
Sporadic Server
Abstract
Sporadic tasks have hard deadlines. Sporadic tasks can be scheduled within a dedicated periodic task called a sporadic server. The priorities of all the periodic tasks, including the sporadic server, can be statically determined. Consequently, the schedulability of a real-time system can be analyzed at design time. At run time, a sporadic server will reject a sporadic task if its acceptance would adversely break the deadline of some already accepted task. A sporadic server typically employs a so-called earliest-deadline-first policy to select the next sporadic task to execute. However, the run-time behavior of different sporadic servers can differ greatly, depending on their predefined ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.