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Achieving Industrial Strength Timing Predictions of Embedded System Behavior
Publication Type:
Conference/Workshop Paper
Venue:
The 2008 International Conference on Embedded Systems and Applications
Abstract
This paper discusses why the extensive scientific
results on predicting embedded systems temporal behavior never,
or very seldom, reaches the industrial community. We also point
out the main issues that the scientific community should focus
on in order to facilitate industrial-strength timing predictions.
The core problem is that the scientific community uses too simplistic
or research oriented timing models. The models stemming
from academy do not fit well with the structure of real systems.
Thus, extracting a timing model that is amenable for analysis
may prove prohibitively difficult. And even if a model can be
extracted, it may not capture real system scenarios well. Thus,
results from analyzing these models do not reflect real system
behavior, leading to unnecessary pessimistic timing predictions.
In recent years, response-time analysis has matured to a
degree where models can express complex system behaviors and
analysis results are relatively tight with respect to real system
behavior. However, in order to fully reach its potential, and be
accepted by industry, several improvements of the technique are
needed. First, behaviors that are commonly used in industrial
systems (such as message passing and client/server-patterns)
must be adequately captured by the timing models. Second,
unnecessary pessimism in the analysis must be removed (i.e. the
analysis results must correlate well with actual system behavior
by providing minimal overestimation). Third, correlated
behaviors of different parts of the systems must be accounted
for (i.e. not all tasks will experience the worst case execution
times at the same time).
Bibtex
@inproceedings{Sjodin1268,
author = {Mikael Sj{\"o}din and Jukka M{\"a}ki-Turja and Kaj H{\"a}nninen},
title = {Achieving Industrial Strength Timing Predictions of Embedded System Behavior},
month = {July},
year = {2008},
booktitle = {The 2008 International Conference on Embedded Systems and Applications},
url = {http://www.es.mdu.se/publications/1268-}
}