e-journal

Architecting Flash-based Solid-State Drive for High-performance I/O Virtualization

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Flash-based solid-state drive (SSD) is now being widely deployed in cloud computing platforms due to the potential advantages of better performance and less energy consumption. However, current virtualization architecture lacks support for highperformance I/O virtualization over persistent storage, which results in sub-optimal I/O performance for guest virtual machines (VMs) on SSD. Further, current software-based I/O virtualization violates the “don’t hide power” principle due to inefficient support for some advanced SSD commands (e.g., TRIM) and constrained parallelism, leading to sub-optimal performance and life cycle. This paper observes that the massive internal parallelism and the block emulation in the flash translation layer (FTL) make flash-based SSD an ideal candidate to support high-performance I/O virtualization for persistent storage. Based on this observation, we propose VFlash, the first storage I/O virtualization architecture that extends existing SSDs with trivial hardware changes to directly expose multiple virtual SSDs to guest VMs. Performance evaluation using a modified FlashSim with two FTL schemes (i.e., DFTL and FAST) shows that VFlash incurs only small performance overhead over native SSDs and can Efficiently exploit parallelism.

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Ketersediaan

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Informasi Detail

Judul Seri

COMPUTER ARCHITECTURE

No. Panggil

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Penerbit

Sweden : IEEE Computer Architecture Letters., 2014

Deskripsi Fisik

IEEE COMPUTER ARCHITECTURE LETTERS, VOL. 13, NO. 2, JULY-DECEMBER 2014

Bahasa

English

ISBN/ISSN

Digital Object Ident

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

VOL. 13, NO. 2, JULY-DECEMBER 2014

Subjek

ARSITEKTUR KOMPUTER

Info Detail Spesifik

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Pernyataan Tanggungjawab

deliza

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