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2012
IEEE

vSlicer: latency-aware virtual machine scheduling via differentiated-frequency CPU slicing

9 years 10 months ago
vSlicer: latency-aware virtual machine scheduling via differentiated-frequency CPU slicing
Recent advances in virtualization technologies have made it feasible to host multiple virtual machines (VMs) in the same physical host and even the same CPU core, with fair share of the physical resources among the VMs. However, as more VMs share the same core/CPU, the CPU access latency experienced by each VM increases substantially, which translates into longer I/O processing latency perceived by I/Obound applications. To mitigate such impact while retaining the benefit of CPU sharing, we introduce a new class of VMs called latency-sensitive VMs (LSVMs), which achieve better performance for I/O-bound applications while maintaining the same resource share (and thus cost) as other CPUsharing VMs. LSVMs are enabled by vSlicer, a hypervisorlevel technique that schedules each LSVM more frequently but with a smaller micro time slice. vSlicer enables more timely processing of I/O events by LSVMs, without violating the CPU share fairness among all sharing VMs. Our evaluation of a vSlicer p...
Cong Xu, Sahan Gamage, Pawan N. Rao, Ardalan Kanga
Added 29 Sep 2012
Updated 29 Sep 2012
Type Journal
Year 2012
Where HPDC
Authors Cong Xu, Sahan Gamage, Pawan N. Rao, Ardalan Kangarlou, Ramana Rao Kompella, Dongyan Xu
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