| Presentation | 2005-10-17 Evaluation of a Data-Placement Method Balancing Access Frequency and Data Amount for Version Management Mana NAKANO, Dai KOBAYASHI, Akitsugu WATANABE, Toshihiro UEHARA, Ryo TAGUCHI, Haruo YOKOTA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We proposed a method COBALT to balance both access frequency and data amount for version management in a parallel storage system. The version management mechanism we assume in COBALT keeps the latest version and a number of differential information sets to access previous versions. Since the access frequency of an aged version tends to become lower than it of the latest version, COBALT uses the differential information sets to balance data amount while the latest version is used to balance access frequency. To implement COBALT, we proposed an index structure of combining a Btree and linked lists, and a migration border in the list to switch over the criterion from access frequency to data amount. In this paper, we evaluate COBALT using an prototype system developed on a blade system, and consider the effect of handling skews by comparing the result with previous simulation results. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | index / storage archtecture / concurrent and distributed DB |
| Paper # | DE2005-130,DC2005-24 |
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| Conference Information | |
| Committee | DC |
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| Conference Date | 2005/10/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Dependable Computing (DC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of a Data-Placement Method Balancing Access Frequency and Data Amount for Version Management |
| Sub Title (in English) | |
| Keyword(1) | index |
| Keyword(2) | storage archtecture |
| Keyword(3) | concurrent and distributed DB |
| 1st Author's Name | Mana NAKANO |
| 1st Author's Affiliation | Department of Computer Science, Graduate School of Information Science and Engineering, Tokyo Institute of Technology() |
| 2nd Author's Name | Dai KOBAYASHI |
| 2nd Author's Affiliation | Department of Computer Science, Graduate School of Information Science and Engineering, Tokyo Institute of Technology |
| 3rd Author's Name | Akitsugu WATANABE |
| 3rd Author's Affiliation | Department of Computer Science, Graduate School of Information Science and Engineering, Tokyo Institute of Technology |
| 4th Author's Name | Toshihiro UEHARA |
| 4th Author's Affiliation | NHK Broadcast Engineering Department |
| 5th Author's Name | Ryo TAGUCHI |
| 5th Author's Affiliation | NHK Science & Technical Research Laboratories |
| 6th Author's Name | Haruo YOKOTA |
| 6th Author's Affiliation | Global Scientific Information & Computing Center, Tokyo Institute of Technology |
| Date | 2005-10-17 |
| Paper # | DE2005-130,DC2005-24 |
| Volume (vol) | vol.105 |
| Number (no) | 339 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |