Notification:
We are currently experiencing intermittent issues impacting performance. We apologize for the inconvenience.
By Topic

A Popularity-Aware Buffer Management to Improve Buffer Hit Ratio and Write Sequentiality for Solid-State Drive

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Qingsong Wei ; Data Storage Inst., Agency for Sci., Technol. & Res. (A*STAR), Singapore, Singapore ; Lingfang Zeng ; Jianxi Chen ; Cheng Chen

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.

Published in:

Magnetics, IEEE Transactions on  (Volume:49 ,  Issue: 6 )