File System Aging - Increasing the Relevance of File System Benchmarks

13 years 8 months ago

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Benchmarks are important because they provide a means for users and researchers to characterize how their workloads will perform on different systems and different system architectures. The ﬁeld of ﬁle system design is no different from other areas of research in this regard, and a variety of ﬁle system benchmarks are in use, representing a wide range of the different user workloads that may be run on a ﬁle system. A realistic benchmark, however, is only one of the tools that is required in order to understand how a ﬁle system design will perform in the real world. The benchmark must also be executed on a realistic ﬁle system. While the simplest approach may be to measure the performance of an empty ﬁle system, this represents a state that is seldom encountered by real users. In order to study ﬁle systems in more representative conditions, we present a methodology for aging a test ﬁle system by replaying a workload similar to that experienced by a real ﬁle system o...

Keith A. Smith, Margo I. Seltzer

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