{"id":194513,"updated":"2025-01-19T23:27:25.061945+00:00","links":{},"created":"2025-01-19T00:59:33.719874+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00194513","sets":["1164:1867:9726:9727"]},"path":["9727"],"owner":"44499","recid":"194513","title":["仮想環境におけるPause Loop Exitの多発要因の調査"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-02-21"},"_buckets":{"deposit":"6665f551-a8cc-4be8-a0c1-cc49ce033826"},"_deposit":{"id":"194513","pid":{"type":"depid","value":"194513","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"仮想環境におけるPause Loop Exitの多発要因の調査","author_link":["460548","460547","460549"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"仮想環境におけるPause Loop Exitの多発要因の調査"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"仮想化","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2019-02-21","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"慶應義塾大学"},{"subitem_text_value":"慶應義塾大学"},{"subitem_text_value":"慶應義塾大学"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Keio University","subitem_text_language":"en"},{"subitem_text_value":"Keio University","subitem_text_language":"en"},{"subitem_text_value":"Keio 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/194513/files/IPSJ-OS19145015.pdf","label":"IPSJ-OS19145015.pdf"},"date":[{"dateType":"Available","dateValue":"2021-02-21"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-OS19145015.pdf","filesize":[{"value":"2.0 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":"11"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"1ecc6f07-43b2-4c60-9cbd-a75879abdc87","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2019 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"安野, 直樹"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"石黒, 健太"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"河野, 健二"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10444176","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":"2188-8795","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"仮想化環境では物理 CPU の個数よりも多くの仮想 CPU を利用することが一般的になっている．ゲスト環境は仮想 CPU がプリエンプトされることは想定せずに実装されているため，仮想 CPU のプリエンプトにより仮想時間の不連続性が発生する．スピンロック中などに仮想時間がとぎれると Pause Loop Exit (PLE) というイベントが発生し，仮想マシンモニタに通知が行われる．現状の仮想化環境では PLE が多発することがあることが知られており，本研究では KVM を対象にその要因を定量的に分析する．その結果，1) プロセッサ間割込み (IPI) 処理におけるバリア同期，2) スピンロックの獲得待ち，3) タイムスタンプベースの待機処理．という 3 つのケースで PLE が多発していることを示す．さらに，KVM では PLE の多発を避けるように仮想 CPU スケジューリングを行っているものの，現状では十分に機能していないことを示す．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告システムソフトウェアとオペレーティング・システム（OS）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2019-02-21","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"15","bibliographicVolumeNumber":"2019-OS-145"}]},"relation_version_is_last":true,"weko_creator_id":"44499"}}