Jitsu: Just-In-Time Summoning of Unikernels Network latency is a problem for all cloud services. It can be mitigated by moving computation out of remote datacenters by rapidly instantiating local services near the user. This requires an embedded cloud platform on which to deploy multiple applications securely and quickly. We present Jitsu, a new Xen toolstack […]

Queues Don’t Matter When You Can JUMP Them! QJUMP is a simple and immediately deployable approach to controlling network interference in datacenter networks. Network interference occurs when congestion from throughput-intensive applications causes queueing that delays traffic from latency-sensitive applications. To mitigate network interference, QJUMP applies Internet QoS-inspired techniques to datacenter applications. Each application is assigned […]

Cutting Tail Latency in Cloud Data Stores via Adaptive Replica Selection Achieving predictable performance is critical for many distributed applications, yet difficult to achieve due to many factors that skew the tail of the latency distribution even in well-provisioned systems. In this paper, we present the fundamental challenges involved in designing a replica selection scheme […]

InNet: Enabling in-network processing for the masses Network Function Virtualization is pushing network operators to deploy commodity hardware that will be used to run middlebox functionality and processing on behalf of third parties: in effect, network operators are slowly but surely becoming in-network cloud providers. The market for innetwork clouds is large, ranging from content […]

In-Network Processing, User-Level Stacks and the Future of Internet Evolution In this position paper we take such an approach, and discuss two components we believe to be crucial to the future evolution of the Internet. First, we argue for user-level network stacks as a means to allow quicker and easier deployment of novel protocols. Second, […]

Good cop, Bad Cop: Forcing Middleboxes to Cooperate In this paper we discuss two fundamentally different directions in which we can improve address the status quo. Our first proposal is a “good cop”: we present an API endpoints can use to understand the contract offered by the network, and discusses how one might implement this […]

Increasing Datacenter Network Utilization with GRIN Various full bisection designs have been proposed for datacenter networks. They are provisioned for the worst case in which every server sends flat out and there is no congestion anywhere in the network. However, these topologies are prone to considerable underutilisation in the average case encountered in practice. To […]

Towards Wifi Mobility without Fast Handover WiFi is emerging as the preferred connectivity solution for mobile clients because of its low power consumption and high capacity. Dense urban WiFi deployments cover entire central areas, but the one thing missing is a seamless mobile experience. Mobility in WiFi has traditionally pursued fast handover, but we argue […]

Using Cooperation for Low Power Low Latency Cellular Connectivity Mobile devices today rely on cellular (3G or LTE) connectivity be-cause it has ubiquitous coverage. Unfortunately cellular links are energy hungry at low bit-rates and have high round-trip times after idle periods. These characteristics punish common mobile applica-tions such as web browsing and streaming, decreasing battery […]