For Full-Text PDF, please login, if you are a member of IEICE,|
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
Migration Cost Sensitive Garbage Collection Technique for Non-Volatile Memory Systems
Sang-Ho HWANG Ju Hee CHOI Jong Wook KWAK
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/12/01
Online ISSN: 1745-1361
Type of Manuscript: LETTER
Category: Software System
non-volatile memory, garbage collection, wear leveling, migration cost, update frequency,
Full Text: PDF>>
In this letter, we propose a garbage collection technique for non-volatile memory systems, called Migration Cost Sensitive Garbage Collection (MCSGC). Considering the migration overhead from selecting victim blocks, MCSGC increases the lifetime of memory systems and improves response time in garbage collection. Additionally, the proposed algorithm also improves the efficiency of garbage collection by separating cold data from hot data in valid pages. In the experimental evaluation, we show that MCSGC yields up to a 82% improvement in lifetime prolongation, compared with existing garbage collection, and it also reduces erase and migration operations by up to 30% and 29%, respectively.