{"updated":"2025-01-19T17:38:14.996242+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00211905","sets":["1164:1579:10482:10619"]},"path":["10619"],"owner":"44499","recid":"211905","title":["セキュアな不揮発性メモリのクラッシュ一貫性支援の高速化"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-07-13"},"_buckets":{"deposit":"7348352c-11a5-48fe-bd88-93245f93bd1c"},"_deposit":{"id":"211905","pid":{"type":"depid","value":"211905","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"セキュアな不揮発性メモリのクラッシュ一貫性支援の高速化","author_link":["539351","539350"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"セキュアな不揮発性メモリのクラッシュ一貫性支援の高速化"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"メモリシステム","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2021-07-13","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学"},{"subitem_text_value":"東京大学"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"The University of Tokyo","subitem_text_language":"en"},{"subitem_text_value":"The University of Tokyo","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/211905/files/IPSJ-ARC21245007.pdf","label":"IPSJ-ARC21245007.pdf"},"date":[{"dateType":"Available","dateValue":"2023-07-13"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-ARC21245007.pdf","filesize":[{"value":"1.5 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":"16"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"1a775361-29c9-4078-bc8a-f13385744e96","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2021 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"小池, 亮"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"高前田, 伸也"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10096105","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":"2188-8574","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"バイトアドレスの不揮発性メモリ (NVM) は，改竄に対して従来の揮発性メモリより脆弱である．データの整合性を保証し改竄を検知する機構として，Bonsai Merkle Tree (BMT) がよく用いられる．しかし，NVM への書き込みの都度 BMT を葉から根まで更新するオーバーヘッドは，書き込みのボトルネックとなるほど大きい．さらに，突然のクラッシュや電源遮断後のデータの一貫性保持のため，NVM ではライト・アヘッド・ロギングと呼ばれる手法が広く使われているが，これは本来のデータ更新に先立ちログを NVM 上に書き込むので，BMT 更新のオーバーヘッドを 2 倍にしてしまう．この問題を解決するため，本研究はセキュアな NVM 用のハードウェア・ロギング・アーキテクチャを提案する．これは，以下の 2 つの発見に基づいている．1) NVM の膨大なサイズのために，ログの BMT 更新パス同士は根より遥かに低いノードで合流する．2) データの上書き更新用の BMT 更新については，ライト・ペンディング・キュー (WPQ) での永続化が実は BMT 更新完了の瞬間まで不必要である．そこで，ログ用に BMT を分離し，ログ用の BMT 更新レイテンシを 64% 削減した．また，WPQ への挿入を遅らせることで，上書き更新用の BMT 更新レイテンシを 91% 削減した．評価の結果，提案アーキテクチャは最先端のアーキテクチャより最大で 2.8 倍高速にトランザクションを処理できることを確認した．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"10","bibliographic_titles":[{"bibliographic_title":"研究報告システム・アーキテクチャ（ARC）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2021-07-13","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"7","bibliographicVolumeNumber":"2021-ARC-245"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"created":"2025-01-19T01:13:01.387798+00:00","id":211905,"links":{}}