{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00219876","sets":["1164:4061:10837:10976"]},"path":["10976"],"owner":"44499","recid":"219876","title":["Androidスマートフォンにおけるフォアグラウンドタスクの動作を考慮したCPUクロックレート制御"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-08-29"},"_buckets":{"deposit":"608785d9-f22f-4bab-b37f-d9ee90784be2"},"_deposit":{"id":"219876","pid":{"type":"depid","value":"219876","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"Androidスマートフォンにおけるフォアグラウンドタスクの動作を考慮したCPUクロックレート制御","author_link":["574063","574061","574060","574062"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Androidスマートフォンにおけるフォアグラウンドタスクの動作を考慮したCPUクロックレート制御"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ソフトウエア・システム","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2022-08-29","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"工学院大学"},{"subitem_text_value":"長崎大学"},{"subitem_text_value":"お茶の水女子大学"},{"subitem_text_value":"工学院大学"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Kogakuin University","subitem_text_language":"en"},{"subitem_text_value":"Nagasaki University","subitem_text_language":"en"},{"subitem_text_value":"Ochanomizu University","subitem_text_language":"en"},{"subitem_text_value":"Kogakuin 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/219876/files/IPSJ-UBI22075025.pdf","label":"IPSJ-UBI22075025.pdf"},"date":[{"dateType":"Available","dateValue":"2024-08-29"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-UBI22075025.pdf","filesize":[{"value":"4.3 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"36"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"2900402a-92cd-4ea6-80ab-3f07f2d347fc","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2022 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"熊倉, 孝太"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"神山, 剛"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"小口, 正人"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山口, 実靖"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11838947","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_source_id_11":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2188-8698","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"スマートフォンにおいて消費電力の低減は重要な課題の一つである.また,CPU は大きな電力を消費する装置の一つであるため,適切な速度の制御が重要となる.CPU による消費電力の削減とユーザエクスペリエンスの改善はトレードオフの関係にある.すなわち,CPU クロックレートを低下させると,消費電力が改善するがユーザエクスペリエンスは悪化する.クロックレートを増加させると逆となる.よって,CPU 資源消費が大きくなる時にはクロックレートを増加させ,低くなるときは低下させることが好ましい.しかし,主要なスマートフォン OS の一つである Android を含め,多くのスマートフォン OS のカーネルでは,未来の CPU 資源消費量の予測は行っていない.CPU 資源消費の増加や減少を観察した後にクロックレートを上げ下げする後追い型のポリシーとなっており,必ずしも適切にクロックレートを制御できていない.本稿では,Android OS に着目し,フォアグラウンドアプリケーションの動作を観察して近い未来の CPU 使用率を予測し,その予測に基づき CPU クロックレートを制御する手法を提案する.そして,性能評価によりその有効性を示す.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"7","bibliographic_titles":[{"bibliographic_title":"研究報告ユビキタスコンピューティングシステム(UBI)"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2022-08-29","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"25","bibliographicVolumeNumber":"2022-UBI-75"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":219876,"updated":"2025-01-19T14:44:55.108804+00:00","links":{},"created":"2025-01-19T01:19:55.929154+00:00"}