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The ADvanced Systems Laboratory (ADSL)
Publication abstract

A File is Not a File: Understanding the I/O Behavior of Apple Desktop Applications

Tyler Harter, Chris Dragga, Michael Vaughn, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau

Department of Computer Sciences, University of Wisconsin-Madison


We analyze the I/O behavior of iBench, a new collection of productivity and multimedia application workloads. Our analysis reveals a number of differences between iBench and typical file-system workload studies, including the complex organization of modern files, the lack of pure sequential access, the influence of underlying frameworks on I/O patterns, the widespread use of file synchronization and atomic operations, and the prevalence of threads. Our results have strong ramifications for the design of next generation local and cloud-based storage systems.

Full Paper: PDF