本文選題：實時交換 + 循環(huán)緩存��； 參考：《計算機科學》2017年S1期

【摘要】：針對數(shù)據(jù)中心對信息實時交換系統(tǒng)實時可靠傳輸數(shù)據(jù)流的應用需求,分析了數(shù)據(jù)中心傳輸數(shù)據(jù)流的特點,設計了實時交換系統(tǒng)架構(gòu),重點研究了信息系統(tǒng)可靠、實時傳輸數(shù)據(jù)的方法。采用線程控制模塊和消息同步阻塞I/O模型實現(xiàn)了并發(fā)數(shù)據(jù)流的處理,基于循環(huán)緩存機制和雙系統(tǒng)同步技術(shù)解決了突發(fā)數(shù)據(jù)流易丟包的難題,保證了系統(tǒng)的可靠性。為了確保經(jīng)過數(shù)據(jù)中心的數(shù)據(jù)流的實時傳輸,減少系統(tǒng)處理過程中產(chǎn)生的時延,提出了QPTS(隊列優(yōu)先級驅(qū)動的任務調(diào)度)算法。該算法兼顧優(yōu)先級、截止時間和剩余包數(shù),實現(xiàn)了數(shù)據(jù)流的按需調(diào)度,提高了系統(tǒng)對交換數(shù)據(jù)流的處理速度。測試結(jié)果驗證了算法的有效性以及系統(tǒng)的實時性和可靠性。
[Abstract]:According to the application demand of data center for real-time and reliable data stream transmission of information real-time exchange system, the characteristics of data center transmission data stream are analyzed, the architecture of real-time exchange system is designed, and the reliability of information system is studied emphatically. The method of transmitting data in real time. The thread control module and the message synchronization blocking I / O model are used to process the concurrent data stream. Based on the cyclic buffer mechanism and the dual system synchronization technology, the problem of the burst data stream is easily lost and the reliability of the system is ensured. In order to ensure the real-time transmission of the data flow through the data center and reduce the delay in the processing of the system, a QPTS (queue Priority-Driven Task scheduling) algorithm is proposed. The algorithm takes into account the priority, cut-off time and the number of remaining packets, realizes the on-demand scheduling of the data flow, and improves the processing speed of the system to the switched data stream. The test results verify the effectiveness of the algorithm and the real-time and reliability of the system.
【作者單位】： 西北核技術(shù)研究所數(shù)值模擬與軟件研發(fā)中心;清華大學計算機科學與技術(shù)系;
【分類號】：TP308
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本文編號：2086454