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【正文】 Oracle Database。 測試描述 在實驗的開始，我們先用 Swingbench 測試并對比單獨的服務器所支持的，一個虛擬機上的和兩個虛擬機上的每分鐘最大事務處理數。 第三章 軟件和硬件環(huán)境 我們這里使用的軟件是 Oracle 虛擬機（ Oracle VM server） ，紅帽系統(tǒng)（ Red Hat Enterprise Linux (RHEL) ） ， ） Oracle 數據庫企業(yè)版 11g（ Oracle Database11g Enterprise Edition Release2），基準測試工具 ， LMbench3a9。它更應該提高傳統(tǒng)操作系統(tǒng)的虛擬機性能水平，因此滿足高性能應用的需求不惜要唯一的硬件支持。它的設計目的就是產生負荷壓力測試 Oracle 數據庫。虛擬服務器技術是現代計算機信息處理技術中用來減少計算時間和開銷的工具，但是如果被錯誤運用，它將成為整個環(huán)境的安全威脅。在一個單獨的Oracle虛擬機下的 Oracle數據庫，結果顯示使用 Swingbench獲得了 4%和 8%的開銷對應30和 50個活躍用戶的績效評估。為了高品質的回報的可擴展性和后續(xù)支持也分別分析使用 30和 50個活躍用戶的績效評估。想要一個安全的虛擬服務系統(tǒng)，在應用程序的可用性和進程間的獨立性方面都是有改善空間的。而這份研究是評估 Oracle 數據庫在虛擬環(huán)境和非虛擬環(huán)境下的性能和可擴展性的。 第二章 相關工作 對虛 擬機環(huán)境的相關性能的評估，有效的工作已經實施。像任何一個新技術，操作和過程不好可能造成很多缺點。而在虛擬環(huán)境中， Oracle虛擬機是虛擬層，在它上面創(chuàng)建兩個虛擬機。 Performance and Scalability Evaluation of Oracle VM Server Software Virtualization in a 64 bit Linux Environment Ibidokun Emmanuel Tope, Pavol Zavarsky, Ron Ruhl, Dale Lindskog Information Systems Security Department Concordia University College of Alberta Edmonton, Canada ,{, ABSTRACT The growing adoption of virtualization in the enterprise environment has resulted in a couple of huge benefits, however, this has not been without its attendant problems and anomalies, such as performance tuning and erratic performance metrics, unresponsive virtualized systems,crashed virtualized servers, misconfigured virtual hosting platforms, amongst others. The focus of this research was the analysis of the performance of the Oracle VM server virtualization platform against that of the baremetal server environment. The scalability and its support for high volume transactions were also analyzed using 30 and 50 active users for the performance evaluation. Swingbench and LMbench, two open suite benchmark tools were utilized in measuring performance. Scalability was also measured using Swingbench. Evidential results gathered from Swingbench revealed 4% and 8% overhead for 30 and 50 active users respectively in the performance evaluation of Oracle database in a single Oracle VM. Correspondingly, performance metrics of 75% and 87% were obtained with 30 and 50 active users in a dual Oracle VM server, indicating performance scalability improvement with two virtual machines. Our results also revealed significant percentages in latency and bandwidth achievement by Oracle VM server which cannot be overlooked, despite some variances in results obtained from LMbench measurement. KEY W
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