An Efficient Log Buffer Management Scheme of Flash Memory Through Delay of Merging Hot Data Blocks
Hak-Chul Kim, Yong-Hun Park, Jong-Hyeong Yun, Dong-Min Seo, Suk-Il Song, Jaesoo Yoo · The Journal of the Korea Contents Association · 2010
In this paper, we propose a new log buffer management scheme considering the accessibility of the data. Our proposed scheme evaluates the worth of the merge of log blocks. It conducts the merge operations between infrequently updated data and the data blocks and postpones as much as possible the merge operations between frequently updated data and the data blocks. As a result, the proposed method prevents the unnecessary merge operations, reduces the number of the erase operations, and improves the utilization of the flash memory storage. In order to show the superiority of the proposed scheme, we compare it with BAST and FAST. It is shown through performance evaluation that the proposed method achieves about 25% and 65% performance improvements over BAST and FAST on average in terms of the number of the erase operations.