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TBM: Twin Block Management Policy to Enhance the Utilization of Plane-Level parallelism in SSDs

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The internal architecture of a SSD provides channel-, chip-, die- and plane-level parallelism Levels, to concurrently perform multiple data accesses and compensate for the performance gap between a single flash chip and host interface. Although a good strategy can effectively exploit the first 3 levels, parallel I/O accesses at plane-level can be performed only for operations of the same types and page addresses. In this work, we propose the Twin Block Management (TBM) policy that symmetrically conducts usage and recycling of the flash block addresses on the planes of a die, thus enhancing the utilization of plane-level parallelism for reads, writes and erases. Evaluation results show that TBM improves IOPS and response time by up to 73% and 42%,Respectively.

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Ketersediaan

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Informasi Detail

Judul Seri

Computer Architecture Letters

No. Panggil

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Penerbit

Sweden : IEEE Computer Architecture Letters., 2015

Deskripsi Fisik

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Bahasa

English

ISBN/ISSN

DOI 10.1109/LCA.2015

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

ARSITEKTUR KOMPUTER

Info Detail Spesifik

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Pernyataan Tanggungjawab

deliza

Versi lain/terkait

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