Writeback throttling in a virtualized system with SCM  

作　　者：Dingding LI Xiaofei LIAO Hai JIN Yong TANG Gansen ZHAO 

机构地区：[1]School of Computer Science, South China Normal University, Guangzhou 510631, China [2]School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China

出　　处：《Frontiers of Computer Science》2016年第1期82-95,共14页中国计算机科学前沿（英文版）

摘　　要：Storage class memory （SCM） has the potential to revolutionize the memory landscape by its non-volatile and byte-addressable properties. However, there is little published work about exploring its usage for modem virtualized cloud infrastructure. We propose SCM-vWrite, a novel architecture designed around SCM, to ease the performance interference of virtualized storage subsystem. Through a case study on a typical virtualized cloud system, we first describe why cur- rent writeback manners are not suitable for a virtualized en- vironment, then design and implement SCM-vWrite to im- prove this problem. We also use typical benchmarks and re- alistic workloads to evaluate its performance. Compared with the traditional method on a conventional architecture, the ex- perimental result shows that SCM-vWrite can coordinate the writeback flows more effectively among multiple co-located guest operating systems, achieving a better disk I/O perfor- mance without any loss of reliability.Storage class memory （SCM） has the potential to revolutionize the memory landscape by its non-volatile and byte-addressable properties. However, there is little published work about exploring its usage for modem virtualized cloud infrastructure. We propose SCM-vWrite, a novel architecture designed around SCM, to ease the performance interference of virtualized storage subsystem. Through a case study on a typical virtualized cloud system, we first describe why cur- rent writeback manners are not suitable for a virtualized en- vironment, then design and implement SCM-vWrite to im- prove this problem. We also use typical benchmarks and re- alistic workloads to evaluate its performance. Compared with the traditional method on a conventional architecture, the ex- perimental result shows that SCM-vWrite can coordinate the writeback flows more effectively among multiple co-located guest operating systems, achieving a better disk I/O perfor- mance without any loss of reliability.

关 键 词：VIRTUALIZATION storage class memory writeback 

分 类 号：TP333[自动化与计算机技术—计算机系统结构] F274[自动化与计算机技术—计算机科学与技术]