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Power and cooling considerations have moved to the forefront of modern system design. The restrictions placed upon systems by power and cooling requirements have focused much research on a variety of techniques to reduce maximum power and leakage. Simultaneously, efforts are being made to adapt microarchitectural features to the current needs of an application. We focus instead on adapting large scale...
Cloud computing makes extensive use of virtual machines because they permit workloads to be isolated from one another and for the resource usage to be somewhat controlled. In this paper, we explore the performance of traditional virtual machine (VM) deployments, and contrast them with the use of Linux containers. We use KVM as a representative hypervisor and Docker as a container manager. Our results...
In this paper we propose, implement and evaluate Open Sample: a low-latency, sampling-based network measurement platform targeted at building faster control loops for software-defined networks. Open Sample leverages sFlow packet sampling to provide near-real-time measurements of both net-work load and individual flows. While Open Sample is useful in any context, it is particularly useful in an SDN...
Modern disk-based storage systems are not energy proportional, because disks consume almost as much power when idle (but spinning) as they do when actively accessing data. We combine a power-aware, solid-state (flash) cache and a reliability-aware disk spindown mechanism to significantly improve storage energy proportionality without hurting disk reliability, data integrity, or performance. We evaluated...
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