Solar-Terrestrial Environment Laboratory, Nagoya University
Solar-Terrestrial Environment Laboratory, Nagoya University
International Center for Space Weather Science and Education, Kyushu University
Data Analysis Center for Geomagnetism and Space Magnetism, Graduate School of Science, Kyoto University
National Institute of Polar Research
Research Institute for Sustainable Humanosphere, Kyoto University : FUJITSU FIP CORPORATION
Kwasan and Hida Observatories, Graduate School of Science, Kyoto University
Research Institute for Sustainable Humanosphere, Kyoto University
National Institute of Polar Research
Planetary Plasma and Atmospheric Research Center, Tohoku University
出版者
宇宙航空研究開発機構(JAXA)
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構研究開発報告: 宇宙科学情報解析論文誌: 第2号
雑誌名(英)
JAXA Research and Development Report: Journal of Space Science Informatics Japan Volume 2
This paper reports on the benchmark test of the metadata management system developed by the Inter-university Upper atmosphere Global Observation NETwork (IUGONET) project. The IUGONET metadata management system consists of the metadata reception module based on file repositories of Git, which is a widely-used version control software, and the metadata import module to register metadata to the metadata database using the DSpace commands. We made the performance assessments for these two modules in terms of the processing speed for registering/importing metadata both on a native Linux platform and a virtualized Linux platform. As a result, the metadata reception module processes properly even millions of registered metadata within several minutes at most, showing roughly the similar performance for the native and virtualized platform. On the other hand, the metadata import module needs much longer processing times of several to a few tens of hours for the same amount of metadata. As compared with the virtualized platform, the native platform gives a four times faster speed for updating indices for the built-in search engine based on Lucene. From a perspective of the regular operation of the metadata management system, the metadata import module runs more efficiently on the native Linux platform and it is estimated by our performance test that it takes about 5 hours to newly import 10(exp5) metadata files and subsequently takes about 21 hours to update the Lucene indices for the registered metadata of 5× 10(exp6) in total.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
IUGONETメタデータ登録・管理システムの処理性能評価
61914008.pdf
(1.25MB)
