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University of Cambridge > Talks.cam > Microsoft Research Cambridge, public talks > Opportunistic Storage Maintenance (SOSP’15)
Opportunistic Storage Maintenance (SOSP’15)Add to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Microsoft Research Cambridge Talks Admins. This talk has been canceled/deleted Storage systems rely on maintenance tasks, such as backup and layout optimization, to ensure data availability and good performance. These tasks access large amounts of data and can significantly impact foreground applications. We argue that storage maintenance can be performed more efficiently by prioritizing processing of data that is currently cached in memory. Data can be cached either due to other maintenance tasks requesting it previously, or due to overlapping foreground I/O activity. We present Duet, a framework that provides notifications about page-level events to maintenance tasks, such as a page being added or modified in memory. Tasks use these events as hints to opportunistically process cached data. We show that tasks using Duet can complete maintenance work more efficiently because they perform fewer I/O operations. The I/O reduction depends on the amount of data overlap with other maintenance tasks and foreground applications. Consequently, Duet’s efficiency increases with additional tasks because opportunities for synergy appear more often. This work will appear at SOSP ’15 in October. This talk is part of the Microsoft Research Cambridge, public talks series. This talk is included in these lists:This talk is not included in any other list Note that ex-directory lists are not shown. |
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