Re-aligning Across-page Requests for Flash-based Solid-state Drives
Zhigang Cai,
Chengyong Tang,
Minjun Li
et al.
Abstract:In flash-based solid-state drives (SSDs), certain small unaligned I/O requests span two logical pages though their size is not larger than the basic write/read unit of SSDs (i.e. an SSD page), and we term them as across-page requests. Servicing such across-page requests triggers two separated I/O operations on different SSD pages, and thus impacts the I/O performance and the endurance of SSDs. For mitigating negative effects caused by across-page requests, this paper proposes a novel flash translation layer (F… Show more
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