Dynamic cache partitioning based on hot page migration  

作　　者：Xiaolin WANG Xiang WEN Yechen LI Zhenlin WANG Yingwei LUO Xiaoming LI 

机构地区：[1]Department of Computer Science,Peking University,Beijing 100871,China [2]Department of Computer Science,Michigan Technological University,Houghton,MI 49931,USA [3]The Shenzhen Key Lab for Cloud Computing Technology and Applications,Peking University Shenzhen Graduate School,Shenzhen 518055,China

出　　处：《Frontiers of Computer Science》2012年第4期363-372,共10页中国计算机科学前沿（英文版）

摘　　要：Static cache partitioning can reduce inter- application cache interference and improve the composite performance of a cache-polluted application and a cache- sensitive application when they run on cores that share the last level cache in the same multi-core processor. In a virtu- alized system, since different applications might run on dif- ferent virtual machines （VMs） in different time, it is inappli- cable to partition the cache statically in advance. This paper proposes a dynamic cache partitioning scheme that makes use of hot page detection and page migration to improve the com- posite performance of co-hosted virtual machines dynami- cally according to prior knowledge of cache-sensitive appli- cations. Experimental results show that the overhead of our page migration scheme is low, while in most cases, the com- posite performance is an improvement over free composition.Static cache partitioning can reduce inter- application cache interference and improve the composite performance of a cache-polluted application and a cache- sensitive application when they run on cores that share the last level cache in the same multi-core processor. In a virtu- alized system, since different applications might run on dif- ferent virtual machines （VMs） in different time, it is inappli- cable to partition the cache statically in advance. This paper proposes a dynamic cache partitioning scheme that makes use of hot page detection and page migration to improve the com- posite performance of co-hosted virtual machines dynami- cally according to prior knowledge of cache-sensitive appli- cations. Experimental results show that the overhead of our page migration scheme is low, while in most cases, the com- posite performance is an improvement over free composition.

关 键 词：cache partitioning hot page migration dynamic cache partitioning VIRTUALIZATION virtual machine monitor 

分 类 号：TP332[自动化与计算机技术—计算机系统结构] TU831.36[自动化与计算机技术—计算机科学与技术]