Optimal Cache Memory Exploitation for Continuous Media: To Cache or to Prefetch?
Multimedia Tools and Applications
Scalable and fault-tolerant support for variable bit-rate data in the exedra streaming server
ACM Transactions on Storage (TOS)
Adaptive cycle management in soft real-time disk retrieval
Information Systems
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This paper presents techniques, which exploit recent magnetic disk-drive technological developments (such as the existence of embedded drive-level caches and powerful controllers, and the ever-increasing transfer rates). It contributes prefetching techniques into host- and drive-level caches to improve the maximum number of continuous data streams that a drive can support. We show how our techniques can achieve significant performance improvements while guaranteeing the uninterrupted display of the continuous data. In addition, despite our techniques' utilization of drive-level caches, the performance improvements do not come at the expense of additional cache memory (at the host and/or the drive). Given current technology trends, the benefits of our techniques are expected to become even greater.