Abstract
SSD performance has been rapidly improved by maximally utilizing the parallel processing capability of SSDs and by using SSD internal memory as cache for NAND flash. In addition, a method of improving performance by applying a fast shallow write for short-lived data has been proposed recently, based on the observation that a considerable amount of data are short-lived. However, the existing studies have applied the shallow write to the SSDs with no internal cache. Therefore, this work aims at verifying the performance improvement when using both the internal cache and shallow write. The performance evaluation results show that the performance is degraded by up to 98.0% when the shallow write is applied. The total number of block erasure has also increased by up to 79.8%. That is, the shallow write has a negative effect on the SSD performance and lifetime.
| Translated title of the contribution | Performance Evaluation of Applying Shallow Write in SSDs with Internal Cache |
|---|---|
| Original language | Korean |
| Pages (from-to) | 31-38 |
| Number of pages | 8 |
| Journal | 한국정보기술학회논문지 |
| Volume | 17 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2019 |