Abstract | ||
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The number of applications that can access a storage device simultaneously has increased as a result of the increase in storage capacity and the emergence of hyperscale environments. In multi-application environments, the request for append-only data to storage from applications such as log-structured merge-tree-based key-value (LSMKV) stores can negatively affect the storage-internal buffer hit ratio of other applications. This is because frequently re- accessed data can be evicted from the buffer via the intensive requests of append-only data that are rarely re- accessed. This degradation in the buffer hit ratio increases the storage access latency of applications. Herein, we propose a buffer management method to increase the buffer hit ratio of non-append-only data (or applications) in multi-application environments. The proposed method (1) defines large-sequential writes (that are not overwritten) and all reads on them as append-only input/output (I/O), (2) detects I/O, matching the access pattern of append-only data of LSMKVs, (3) allocates the append-only read/write requests into separate small buffer spaces, and (4) evicts the append-only data from the buffer when free buffer space is required. Because the proposed method stores append-only data of an LSMKV in buffer spaces with a limited size, it can increase the buffer hit ratio of applications that frequently re- access its data. Experimental results show that the proposed method can increase the buffer hit ratio of hot-data-intensive applications and the total buffer hit ratio by 31.72% and 20.06%, on average, respectively, in comparison to the existing buffer management techniques. |
Year | DOI | Venue |
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2021 | 10.1109/ACCESS.2021.3130278 | IEEE ACCESS |
Keywords | DocType | Volume |
Buffer storage, Ash, Compaction, Bars, Random access memory, Performance evaluation, Licenses, Buffer management, log-structured merge tree, multi-application, NAND flash storage | Journal | 9 |
ISSN | Citations | PageRank |
2169-3536 | 0 | 0.34 |
References | Authors | |
0 | 5 |
Name | Order | Citations | PageRank |
---|---|---|---|
Joonyong Jeong | 1 | 0 | 1.01 |
Gyeongyong Lee | 2 | 0 | 0.34 |
Jungkeol Lee | 3 | 0 | 0.34 |
Jungwook Choi | 4 | 0 | 1.01 |
Yong Ho Song | 5 | 0 | 0.34 |