Co-Scheduling of Disk Head Time in Cluster-Based Storage
CARNEGIE-MELLON UNIV PITTSBURGH PA PARALLEL DATA LABORATORY
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Disk timeslicing is a promising technique for storage performance insulation. To work with cluster-based storage, however, timeslices associated with striped data must be co-scheduled on the corresponding servers. This paper describes algorithms for determining global timeslice schedules and mechanisms for coordinating the independent server activities. Experiments with a prototype show that, combined, they can provide performance insulation for workloads sharing a storage cluster-- each workload realizes a configured minimum efficiency within its timeslices regardless of the activities of the other workloads.
- Computer Systems