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| Presentation | 2015-08-05 11:00 Improving Dynamic Node Joining Performance in KVS by Utilizing Page Cache Shohei Miyokawa, Taiki Tokuda, Saneyasu Yamaguchi (Kogakuin Univ.)  DE2015-13 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The number of accesses to a service in the Internet remarkably changes every hour. Thus, dynamic scaling of a system, such as expanding a system in daytime for processing large number of accesses and reducing the system in midnight for saving power consumption, is expected. KVS (Key-Value Store) is widely used DBMS in large scale Internet services. In this paper, we focus on Cassandra, a famous open source KVS, and discuss methods for improving dynamic scaling performance. Firstly, we evaluate node joining time, which is time to add a node to a running KVS system, and show that its bottleneck process is disk I/O in the existing nodes. Secondly, we analyze disk accesses in the bottleneck nodes and point it out that some heavily accessed files are cause of performance decline. Thirdly, we propose two methods for decreasing node joining time. Lastly, we evaluate our methods and demonstrate that our method can improve scaling-up performance of Cassandra. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | KVS / Cassandra / Database / Page cache / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 177, DE2015-13, pp. 7-12, Aug. 2015. | |
| Paper # | DE2015-13 | |
| Date of Issue | 2015-07-29 (DE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | DE2015-13 |
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| Conference Information | |
| Committee | DE IPSJ-DBS IPSJ-IFAT |
| Conference Date | 2015-08-05 - 2015-08-06 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Todaiji Culture Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Management, Information Retrieval, Knowledge Discovery, etc. |
| Paper Information | |
| Registration To | DE |
| Conference Code | 2015-08-DE-DBS-IFAT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improving Dynamic Node Joining Performance in KVS by Utilizing Page Cache |
| Sub Title (in English) | |
| Keyword(1) | KVS |
| Keyword(2) | Cassandra |
| Keyword(3) | Database |
| Keyword(4) | Page cache |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shohei Miyokawa |
| 1st Author's Affiliation | Kogakuin University (Kogakuin Univ.) |
| 2nd Author's Name | Taiki Tokuda |
| 2nd Author's Affiliation | Kogakuin University (Kogakuin Univ.) |
| 3rd Author's Name | Saneyasu Yamaguchi |
| 3rd Author's Affiliation | Kogakuin University (Kogakuin Univ.) |
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| Speaker | Author-1 |
| Date Time | 2015-08-05 11:00:00 |
| Presentation Time | 30 minutes |
| Registration for | DE |
| Paper # | DE2015-13 |
| Volume (vol) | vol.115 |
| Number (no) | no.177 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2015-07-29 (DE) |
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