{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00062560","sets":["1164:2822:5609:5712"]},"path":["5712"],"owner":"10","recid":"62560","title":["マルチプロセッサ対応RTOSにおけるロードバランス機構の実現"],"pubdate":{"attribute_name":"公開日","attribute_value":"2009-07-17"},"_buckets":{"deposit":"bfbf386d-08cc-4059-8b6d-69c48545e415"},"_deposit":{"id":"62560","pid":{"type":"depid","value":"62560","revision_id":0},"owners":[10],"status":"published","created_by":10},"item_title":"マルチプロセッサ対応RTOSにおけるロードバランス機構の実現","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"マルチプロセッサ対応RTOSにおけるロードバランス機構の実現"},{"subitem_title":"Loadbalance Algorithm in a Real-TIme Operating System for Multiprocessors","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"マルチプロセッサ リアルタイムOS","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2009-07-17","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"名古屋大学大学院情報科学研究科"},{"subitem_text_value":"名古屋大学大学院情報科学研究科"},{"subitem_text_value":"名古屋大学大学院情報科学研究科"},{"subitem_text_value":"株式会社ルネサスソリューションズ"},{"subitem_text_value":"株式会社ルネサステクノロジ"},{"subitem_text_value":"株式会社ルネサステクノロジ"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Information Science Nagoya University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science Nagoya University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science Nagoya University","subitem_text_language":"en"},{"subitem_text_value":"Renesas Solutions Corp.","subitem_text_language":"en"},{"subitem_text_value":"Renesas Technology Corp.","subitem_text_language":"en"},{"subitem_text_value":"Renesas Technology Corp.","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/62560/files/IPSJ-EMB09014005.pdf"},"date":[{"dateType":"Available","dateValue":"2011-07-17"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-EMB09014005.pdf","filesize":[{"value":"758.1 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":"42"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"a62c2292-0a1b-404a-8d43-d54dba0537cb","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2009 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"石田, 利永子"},{"creatorName":"本田, 晋也"},{"creatorName":"高田, 広章"},{"creatorName":"福井, 昭也"},{"creatorName":"小川, 敏行"},{"creatorName":"田原, 康宏"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Rieko, Ishida","creatorNameLang":"en"},{"creatorName":"Shinya, Honda","creatorNameLang":"en"},{"creatorName":"Hiroaki, Takada","creatorNameLang":"en"},{"creatorName":"Akiya, Fukui","creatorNameLang":"en"},{"creatorName":"Toshiyuki, Ogawa","creatorNameLang":"en"},{"creatorName":"Yasuhiro, Tawara","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12149313","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":"マルチプロセッサ対応 RTOS において，RTOS 自身が各プロセッサの負荷を見て動的にロードバランスを行う SMP 型 OS では，リアルタイム性の保証が困難である．そこで TOPPERS プロジェクトにおいて，AMP 型 OS にタスクマイグレーション機能を追加した組込みシステム向けマルチプロセッサ対応 RTOS である TOPPERS/FMP カーネルが開発された．TOPPERS/FMP カーネルでは，RTOS が動的にロードバランスを行うのではなく，ユーザーの要求時 （API） にのみタスクの移動を行うことで，RTOS 自体のリアルタイム性を高めている．本稿では，TOPPERS/FMP カーネルが提供する API を使用して，ユーザーレベルで，ロードバランスの実現が可能か評価した．具体的には，Linuxで行われているロードバランス機構を調査し，TOPPERS/FMP カーネルに適したタスクのマイグレーションの方法を 2 方式考案し，その方式を比較検討した．評価の結果，各プロセッサの負荷を取得する API と，指定した優先度のタスクを指定したプロセッサへマイグレーションする API の 2 つの API を追加することで，ユーザーレベルでロードバランス機構を実現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":"In a RTOS for multiprocessors, symmetric load balancing, in which the kernel itself watches a load of each processor and dynamically balances the load among processors, sometimes makes it difficult to guarantee real-time behavior of the system. To address this problem, we have developed the TOPPERS/FMP kernel. This kernel will improve the real-time behavior of the multiprocessor system by allowing a user to move a task to another processor on demand through an API rather than by letting the kernel itself perform dynamic load balancing. In this work, we evaluated feasibility of user-level load balancing using the original API's of the TOPPERS/FMP kernel. After investigating the convention of load balancing employed by Linux, we created two candidates of load balancing methods which would be suitable for the TOPPERS/FMP kernel. Adding two new API's was necessary to implement either of the load balancing methods. One API returns a load of a processor, and another API moves a task of a designated priority to a designated processor. We weighed the two load balancing methods and selected one which was suitable for the TOPPERS/FMP kernel.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"12","bibliographic_titles":[{"bibliographic_title":"研究報告組込みシステム（EMB）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2009-07-17","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"5","bibliographicVolumeNumber":"2009-EMB-14"}]},"relation_version_is_last":true,"weko_creator_id":"10"},"updated":"2025-01-22T02:34:34.936289+00:00","created":"2025-01-18T23:24:29.604474+00:00","links":{},"id":62560}