Emulating Goliath Storage Systems with David

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Provided by: NEC Laboratories
Topic: Data Management
Format: PDF
Benchmarking file and storage systems on large file-system images is important, but difficult and often infeasible. Typically, running benchmarks on such large disk setups is a frequent source of frustration for file-system evaluators; the scale alone acts as a strong deterrent against using larger albeit realistic benchmarks. To address this problem, the authors develop David: a system that makes it practical to run large benchmarks using modest amount of storage or memory capacities readily available on most computers. David creates a \"Compressed\" version of the original file-system image by omitting all file data and laying out metadata more efficiently; an online storage model determines the runtime of the benchmark workload on the original uncompressed image.
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