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| Titel: |
Adapting Pfair scheduling for symmetric multiprocessors |
| Auteur: |
Holman, Philip Anderson, James H. |
| Verschenen in: |
Journal of embedded computing |
| Paginering: | Jaargang 1 (2006) nr. 4 pagina's 543-564 |
| Jaar: |
2006-05-17 |
| Inhoud: |
We consider the implementation of a Pfair real-time scheduler on a symmetric multiprocessor (SMP). Although SMPs are in many ways well-suited for Pfair scheduling, experimental results presented herein suggest that bus contention resulting from the simultaneous scheduling of all processors can substantially degrade performance. To correct this problem, we propose a staggered model for Pfair scheduling that strives to improve performance by more evenly distributing bus traffic over time. Additional simulations and experiments with a scheduler prototype are presented to demonstrate the effectiveness of the staggering approach. In addition, we discuss other techniques for improving performance while maintaining worst-case predictability. Finally, we present an efficient scheduling algorithm to support the proposed model and briefly explain how existing Pfair results apply to staggered scheduling. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 11 gevonden artikelen
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