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| Content Provider | ACM Digital Library |
|---|---|
| Author | Edmonds, Jeff Pruhs, Kirk |
| Abstract | We investigate server scheduling policies to minimize user perceived latency in a client-server system where the server uses broadcast communication. We show that no O(1)-competitive online algorithms exist for this problem. We consider the intuitive algorithm BEQUI that broadcasts all requested files at a rate proportional to the number of out-standing requests for that file. We show that BEQUI is an O(1)-speed O(1)-approximation algorithm. We give another algorithm BEQUI-EDF, and show that BEQUI-EDF is also an O(1)-speed O(1)-approximation algorithm. However, BEQUI-EDF has the advantage that it preempts each broadcast on average at most once and will never preempt if the data items have unit size. |
| Starting Page | 421 |
| Ending Page | 430 |
| Page Count | 10 |
| File Format | |
| ISBN | 089871513X |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2002-01-06 |
| Access Restriction | Subscribed |
| Content Type | Text |
| Resource Type | Article |
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