Deepening the theory of queueing systems with variable processing rate and their applications in energy-saving data-centers
| Project/Area Number |
18K18006
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 60020:Mathematical informatics-related
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| Research Institution | University of Tsukuba |
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Principal Investigator |
Phung-Duc Tuan 筑波大学, システム情報系, 准教授 (20633465)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | マルコフ連鎖 / 待ち行列理論 / 流体極限 / 拡散極限 / データセンター / スケール極限 / 省エネ / 省エネデータセンター / 処理速度可変 / 遅延 / 集団到着 / 安定条件 / 再試行 / 起動時間 / 待ち行列 / 処理能力可変 |
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| Outline of Final Research Achievements |
Large-scale data centers are important information infrastructure that supports the modern information society. A large data center consists of tens of thousands of computers and consumes a large amount of power. However, in reality, the rate that these computers are busy processing jobs remains at 30-40%. Therefore, it is expected that the job delay time will be reduced while reducing the power consumption by turning off non-operating server and restarting the stopped server when the load increases. In this research, we propose the appropriate operation policy of the data center and evaluate the performance by modeling the relevant data center by queueing systems with a variable processing speed and analyzing the performance.
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| Academic Significance and Societal Importance of the Research Achievements |
昨今の情報社会において，Facebookなどのソーシャルネットワーク，Zoom，MS Teamsなどのビデオ会議，そしてDropboxなどのストレージサービスは日常生活及び仕事で不可欠となっている．これらのシステムを支える情報インフラ基盤はデータセンターである．データセンターでは多数のコンピュータが存在して，大量の電力を消費している．本研究課題では大規模データセンターを数理モデル化し，モデルを解析することで，システムを効率的に運営するための性能評価量を提供する．
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Report
(5 results)
Research Products
(91 results)
