Research on necessity of adjusting PLE configuration

摘要：

　　Virtualization is important in server consolidation and essential for cloud computing.Using virtualization technology,a single physical machine can provide multiple isolated virtual machine to users,which will improve the overall system resources usage.However,virtualization will also introduce new challenges and mechanisms that work well in traditional operating system may lead to the performance degradation of virtual machines.LHP problem is one such problem that arises due to spin lock mechanism could not work pretty well in virtualization environment.To solve LHP problem,many solutions have been proposed to reduce its performance impact on virtual machines and improve the overall system performance.A hardware assisted technology called Pause Loop Exit(PLE)has been proposed to help detect spin lock waiter in virtual machines and then reduce the cpu time used in spinning.In this paper,we verify the necessity of adjusting PLE configuration in different scenarios.Our experiment results show that it is necessary to adjust PLE configuration when the virtual machine is running different applications and the number of virtual machines varies.

关键词： Virtualization Lock Holder Preemption Pause Loop Exit

作者: Bindi Huang Minjun Zhu

作者单位: School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200240,P.R.China

会议类型: 国际会议

会议名称: 2014 International Conference on Cloud Computing and Internet of Things (CCIOT)(2014年第一届云计算和物联网国际会议)

会议地点: 长春

会议语种:英文

页码: 45-48

在线出版日期: 2014-12-13（万方平台首次上网日期，不代表论文的发表时间）