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# lsli16 - 16-1 Estimating Latency 16-1 Goal: given...

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16-2 16-2 Worst-case latency [of an int. handler or dæmon task to an event]: The longest possible latency given constraints on when events can occur, etc. Worst-case response time [of an int. handler or dæmon task to an event]: The longest possible response time given constraints on when events can occur, etc. Worst-case run time [of an int. handler or dæmon task to an event]: The longest possible actual run time given constraints on when events can occur, etc. For a particular event, response time is always latency plus actual run time. However, the worst-case response time is not necessarily the worst-case latency plus the worst-case actual run-time. Unless otherwise stated, all latencies, actual run times, and response times are worst case. 16-2 EE 4770 Lecture Transparency. Formatted 12:36, 7 April 1999 from lsli16. 16-2
16-3 16-3 Classes of problems: One-shot. Assume that each event can occur at most once. Periodic exhaustive. Events periodic, solution found exhaustively. Periodic statistical. Events periodic, solution found using statistical methods. 16-3 EE 4770 Lecture Transparency. Formatted 12:36, 7 April 1999 from lsli16. 16-3

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16-4 16-4 Events, Event Types, and Interrupts An event is some occurrence in the process. For example, temperature exceeding a threshold. (This is the deﬁnition used throughout the semester.) An event type is a kind of event.
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## This note was uploaded on 12/11/2011 for the course EE 4770 taught by Professor Staff during the Fall '99 term at LSU.

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lsli16 - 16-1 Estimating Latency 16-1 Goal: given...

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