Design and Implementation of Cache Partitioning in Virtual Machine System

阐述了一种基于VMM(virtual machine manager)的虚拟机缓存划分的设计与实现.该方法采用操作系统中的页面着色技术,在虚拟机管理器Xen上进行实现.这种机制对于VMM之上的客户操作系统是完全透明的,便于操作,具有很好的灵活性.经测试表明,提出的缓存划分的方法能够显著地提高同时运行在不同虚拟机上的应用程序的性能.对从SPEc CPU 2006基准测试程序里面挑选出来的并发程序的负载进行测试,结果表明缓存划分最高可以使其性能提升19%.This paper presents a cache partitioning approach which can be implemented in the VMM (virtual machine manager). This approach has been implemented in Xen VMM using the page coloring technique traditionally applied to the OS (operating system). The VMM-based implementation is fully transparent to the guest OS. It thus shows the advantages of simplicity and flexibility. The evaluation shows that this cache partitioning method can work efficiently and improve the performance of co-scheduled applications running within different VMs. In the concurrent workloads selected from the SPEC CPU 2006 benchmarks, the technique achieves a performance improvement by up to 19% for the most sensitive workloads.国家自然科学基金; 国家重点基础研究发展规划(973计划); the National High-Tech Research and Development Plan of China; MOE-Intel Information Technology Foundation中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)0136-45