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In the last decade, NAND flash-based SSDs have been widely adopted for high-end enterprise systems in an attempt to provide a high-performance and reliable storage. However, inferior performance is frequently attained mainly due to the need for Garbage Collection (GC). GC in flash memory is the process of identifying and clearing the blocks of unneeded data to create space for the new data to be allocated...
The system administrator, faces an arduous task of figuring out whether to consolidate storage workloads, which workloads to isolate, which workloads to co-locate, and how to reduce the interference on co-located workloads? This paper presents an approach to ease this arduous task. We consider different mixes of enterprise storage applications on a high-end SSD to study their performance, system throughput...
Storage Consolidation is increasing being adopted to reduce system costs, simplify the storage infrastructure, and enhance availability and resource management. However, consolidation leads to interference in shared resources. This poster shows the effect of consolidation on performance of co-located applications and proposes a static approach to reduce interference.
Power management for large last-level caches (LLCs) is important in chip-multiprocessors (CMPs), as the leakage power of LLCs accounts for a significant fraction of the limited on-chip power budget. Since not all workloads need the entire cache, portions of a shared LLC can be disabled to save energy. In this paper, we explore different design choices, from circuit-level cache organization to micro-architectural...
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