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2008
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Avoiding File System Micromanagement with Range Writes

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Avoiding File System Micromanagement with Range Writes
We introduce range writes, a simple but powerful change to the disk interface that removes the need for file system micromanagement of block placement. By allowing a file system to specify a set of possible address targets, range writes enable the disk to choose the final on-disk location of the request; the disk improves performance by writing to the closest location and subsequently reporting its choice to the file system above. The result is a clean separation of responsibility; the file system (as highlevel manager) provides coarse-grained control over placement, while the disk (as low-level worker) makes the final fine-grained placement decision to improve write performance. We show the benefits of range writes through numerous simulations and a prototype implementation, in some cases improving performance by a factor of three across both synthetic and real workloads.
Ashok Anand, Sayandeep Sen, Andrew Krioukov, Flore
Added 03 Dec 2009
Updated 03 Dec 2009
Type Conference
Year 2008
Where OSDI
Authors Ashok Anand, Sayandeep Sen, Andrew Krioukov, Florentina I. Popovici, Aditya Akella, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau, Suman Banerjee
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