Abstract
Modern flash devices, which perform updates 'out of place', require different optimization strategies than hard disks. The focus for flash devices is on optimizing data movement, rather than optimizing data placement. An understanding of the processes that cause data movement within a flash drive is crucial for analyzing and managing it. While sequentiality on hard drives is easy to visualize, as is done by various defragmentation tools, data movement on flash is inherently dynamic. With the lack of suitable visualization tools, researchers and developers must rely on aggregated statistics and histograms from which the actual movement is derived. The complexity of this task increases with the complexity of state-of-the-art FTL production and research optimizations. Adding visualization to existing research and analysis tools will greatly improve our understanding of modern, complex flash-based systems. We developed SSDPlayer, a graphical tool for visualizing the various processes that cause data movement on SSDs. We use SSDPlayer to demonstrate how visualization can help us shed light on the complex phenomena that cause data movement and expose new opportunities for optimization.
Original language | English |
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State | Published - 2015 |
Event | 7th USENIX Workshop on Hot Topics in Storage and File Systems, HotStorage 2015 - Santa Clara, United States Duration: 6 Jul 2015 → 7 Jul 2015 |
Conference
Conference | 7th USENIX Workshop on Hot Topics in Storage and File Systems, HotStorage 2015 |
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Country/Territory | United States |
City | Santa Clara |
Period | 6/07/15 → 7/07/15 |
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Hardware and Architecture
- Information Systems
- Software