{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00081128","sets":["1164:4088:6718:6719"]},"path":["6719"],"owner":"11","recid":"81128","title":["ネットブート環境における読み込みキャッシュ機構の改善による起動時間短縮の試み"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-03-08"},"_buckets":{"deposit":"81e05737-e747-4fc9-a06e-a68aa1a41b66"},"_deposit":{"id":"81128","pid":{"type":"depid","value":"81128","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"ネットブート環境における読み込みキャッシュ機構の改善による起動時間短縮の試み","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ネットブート環境における読み込みキャッシュ機構の改善による起動時間短縮の試み"},{"subitem_title":"Attempt to reduce startup time by improving the read cache mechanism of netboot environment","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"システム制御","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2012-03-08","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"株式会社シー・オー・コンヴ"},{"subitem_text_value":"株式会社シー・オー・コンヴ"},{"subitem_text_value":"広島大学情報メディア教育研究センター"},{"subitem_text_value":"広島大学情報メディア教育研究センター"},{"subitem_text_value":"広島大学情報メディア教育研究センター"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"CO-CONV, Corp","subitem_text_language":"en"},{"subitem_text_value":"CO-CONV, Corp","subitem_text_language":"en"},{"subitem_text_value":"Information Media Center, Hiroshima University","subitem_text_language":"en"},{"subitem_text_value":"Information Media Center, Hiroshima University","subitem_text_language":"en"},{"subitem_text_value":"Information Media Center, Hiroshima University","subitem_text_language":"en"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_publisher":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会","subitem_publisher_language":"ja"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/81128/files/IPSJ-IOT12016014.pdf"},"date":[{"dateType":"Available","dateValue":"2014-03-08"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-IOT12016014.pdf","filesize":[{"value":"712.8 kB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"43"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"e39633d4-e852-4e32-a885-ef8d4b99ac7f","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2012 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"八田, 直樹"},{"creatorName":"丸山, 伸"},{"creatorName":"松川, 正義"},{"creatorName":"西村, 浩二"},{"creatorName":"相原, 玲二"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Naoki, Hatta","creatorNameLang":"en"},{"creatorName":"Shin, Maruyama","creatorNameLang":"en"},{"creatorName":"Masayoshi, Matsukawa","creatorNameLang":"en"},{"creatorName":"Kouji, Nishimura","creatorNameLang":"en"},{"creatorName":"Reiji, Aibara","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12326962","subitem_source_identifier_type":"NCID"}]},"item_4_textarea_12":{"attribute_name":"Notice","attribute_value_mlt":[{"subitem_textarea_value":"SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc."}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_18gh","resourcetype":"technical report"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"近年，ネットブート環境におけるブートサーバへの負荷軽減のために，端末側に読み込みキャッシュを設けることが有効であると言われている．この方式により端末のハードディスク内にサーバ上の仮想ディスクをキャッシュすることでサーバへのアクセスを減らし，多数の端末を一斉に起動した場合においても起動時間を安定化できる．しかし，ハードディスクは一般にランダムアクセスの性能が劣るため，アクセスが多発するとキャッシュを利用しない場合に比して起動時間が延びることが問題となっていた．そこで本研究では，起動時のアクセスがほぼシーケンシャルなアクセスとなるように端末内のキャッシュの構造を改善することで起動時間を短縮した．そしてキャッシュへのアクセスにプリフェッチ機構を追加することにより起動処理を短縮できることを確認した．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"Recently, read cache system for network booting system is used widely to reduce the load of the boot server. The read cache system caches parts of the virtual disk on server into the clients' local hard disk, and it stabilizes the start-up time of clients even when a large number of them start booting all at once. However, the performance of hard disk is poor for random access in general, and start-up time using read cache system is extended as compared to that without cache system. In this study, we improved the structure of the cache in clients' local hard disk so that the access pattern during startup becomes sequential access, and reduced the startup time. We also added prefetch mechanism to the system and confirmed that the startup time can be shortened more.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告インターネットと運用技術（IOT）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2012-03-08","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"14","bibliographicVolumeNumber":"2012-IOT-16"}]},"relation_version_is_last":true,"weko_creator_id":"11"},"id":81128,"updated":"2025-01-21T19:28:12.061701+00:00","links":{},"created":"2025-01-18T23:35:26.033214+00:00"}