By Topic

Task attribute assignment of fixed priority scheduled tasks to reenact off-line schedules

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
R. Dobrin ; Dept. of Comput. Eng., Malardalen Univ., Sweden ; Y. Ozdemir ; G. Fohler

A number of industrial applications advocate the use of time triggered approaches for reasons of predictability, distribution, and particular constraints such as jitter or end-to-end deadlines. The rigid offline scheduling schemes used for time triggered systems however, do not provide for flexibility. Fixed priority scheduling can provide more flexibility, but is limited with respect to predictability, as actual times of executions depend on run-time events. In this paper, we present a method to combine off-line schedule construction with fixed priority scheduling: by determining task attributes for the off-line scheduled tasks, such that the original schedule is reconstructed if scheduled with FPS at run-time. It analyzes all off-line schedule together with original task constraints to create sequences and windows of tasks. Priorities and offsets are set to ensure task orders in sequences and relation between windows. As FPS cannot reconstuct all schedules with periodic tasks, our algorithm can split tasks into several instances to achieve consistent task attributes. Lower priority tasks can be added for runtime use

Published in:

Real-Time Computing Systems and Applications, 2000. Proceedings. Seventh International Conference on

Date of Conference: