Hard Drives White Papers
Pastense: A Fast Start-up Algorithm for Scalable Video Libraries
Overview Striping video clip data over many physical resources (typically disk drives) balances video server load with less data replication. Current striped video delivery algorithms can have high start-up latency if the load is high. This paper proposes a new, fast start-up algorithm, PASTENSE. This algorithm minimizes start-up latency by using aggressive prefetching to exploit disk idle time, and using available RAM to dynamically optimize the newly requested video’s schedule. Our proposed method (a) does not require changes in the existing striped data placement (b) it never performs worse than alternate designs and (c) it achieves significant benefits: up to 9 times faster start-up times for high loads.
| Publisher | Carnegie Mellon University | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | March 2001 | Downloads | 13 |
| Format | White Papers | ||
| Topics | |||
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