Name
Title | ||
|---|---|---|
Soft Real-Time Scheduling In A General Purpose Operating System: Scheduling Daemon Approach |
Abstract | ||
|---|---|---|
It has been known that a general purpose operating system (GPOS) is not suitable for developing real-time systems since its time sharing-based scheduling strategy does not consider the deadline of tasks. If the GPOS can support real-time scheduling, the real-time systems developed in the GPOS enjoy its inherent advantages: high portability, large suite of development tools, and low system cost. in this paper, we propose a new method implementing real-time scheduling in the Unix, a GPOS, by considering the deadline of real-time tasks. Our approach employs a special task called the scheduling daemon, which deals with all the real-time tasks in a system and makes just one task become a ready-to-run state and others sleep state. This causes the Unix scheduler to deal with only one real-time task as a rule, and thus bypasses time sharing-based scheduling strategy of the Unix. Therefore, all the real-time tasks are scheduled by the strategy of the scheduling daemon. We implement the scheduling daemon on the Unix, and build a real-time platform providing C library-styled Application Programming Interfaces (APIs) in order that application programmers develop real-time systems more effectively. Moreover, we show the superiority of our approach compared with the previous ones by performance analysis using extensive experiments. |
Year | Venue | Keywords |
|---|---|---|
2002 | COMPUTER SYSTEMS SCIENCE AND ENGINEERING | real-time scheduling, deadline, GPOS, Unix, scheduling daemon |
Field | DocType | Volume |
Fixed-priority pre-emptive scheduling,Fair-share scheduling,Computer science,Two-level scheduling,Rate-monotonic scheduling,Earliest deadline first scheduling,Dynamic priority scheduling,Daemon,Round-robin scheduling,Operating system,Distributed computing | Journal | 17 |
Issue | ISSN | Citations |
1 | 0267-6192 | 0 |
PageRank | References | Authors |
0.34 | 1 | 5 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jin-ho Kim | 1 | 1 | 1.36 |
| Sang-Wook Kim | 2 | 792 | 152.77 |
| Dae-yong Kim | 3 | 27 | 2.73 |
| Han-yang You | 4 | 0 | 1.01 |
| Wan Choi | 5 | 2975 | 198.56 |