Please use this identifier to cite or link to this item:
|Title:||A popularity-aware buffer management to improve buffer hit ratio and write sequentiality for solid-state drive||Authors:||Wei, Q.
cache hit ratio
solid-state drive (SSD)
|Issue Date:||2013||Citation:||Wei, Q., Zeng, L., Chen, J., Chen, C. (2013). A popularity-aware buffer management to improve buffer hit ratio and write sequentiality for solid-state drive. IEEE Transactions on Magnetics 49 (6) : 2786-2793. ScholarBank@NUS Repository. https://doi.org/10.1109/TMAG.2013.2249579||Abstract:||Random writes significantly limit the application of flash memory in enterprise environment due to its poor latency, shorten lifetime and high garbage collection overhead. Solid-state drive (SSD) uses a small part of memory as buffer to reduce random write and extend lifetime. Existing block-based buffer management schemes exploit spatial locality to improve the write sequentiality at a cost of low buffer hit ratio. In this paper, we propose a novel buffer management scheme referred to as PAB, which adopts both buffer hit ratio and write sequentiality as design objectives. Leveraging block popularity, PAB makes full use of both temporal and spatial localities at block level. When replacement happens, PAB selects victim block based on block popularity, page counter and block dirty flag. As universal buffer, PAB serves both read and write requests to increase the possibility to form sequential write. PAB has been extensively evaluated under real enterprise workloads. Our benchmark results conclusively demonstrate that PAB can achieve up to 72% performance improvement and 308% block erasure reduction compared to existing buffer management schemes. © 1965-2012 IEEE.||Source Title:||IEEE Transactions on Magnetics||URI:||http://scholarbank.nus.edu.sg/handle/10635/54722||ISSN:||00189464||DOI:||10.1109/TMAG.2013.2249579|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 11, 2019
WEB OF SCIENCETM
checked on Dec 13, 2017
checked on Sep 9, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.