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2011
ACM

Plugging versus logging: a new approach to write buffer management for solid-state disks

8 years 9 months ago
Plugging versus logging: a new approach to write buffer management for solid-state disks
Using device write buffers is a promising technique to improve the write performance of solid-state disks. The write buffer not only reduces the write traffic to the flash but also produces large and sequential write bursts to the underlying flash translation layer. This study proposes a new buffer design consisting of a replacement policy and a write-back policy. This buffer monitors how the host workload stresses the flash translation layer upon garbage collection, and dynamically adjusts its replacement and write-back strategies for a good balance between write sequentiality and traffic reduction. Experimental results show that the proposed buffer design outperformed existing approaches by up to 20% under various workloads and flash translation algorithms. Categories and Subject Descriptors D.4.2 [Storage Management]: Secondary storage General Terms Design, Performance, Algorithm. Keywords Solid-state disks, write buffer, flash memory.
Li-Pin Chang, You-Chiuan Su
Added 18 Dec 2011
Updated 18 Dec 2011
Type Journal
Year 2011
Where DAC
Authors Li-Pin Chang, You-Chiuan Su
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