Debugging faults in complex networks often requires capturing and analyzing traffic at the packet level. In this paper, DataCenter Networks (DCNs) present unique challenges with their scale, traffic volume and diversity of faults. To troubleshoot faults in a timely manner, DCN administrators must identify affected packets inside large volume of traffic; track them across multiple ...

Many network functions executed in modern data centers, e.g., load balancing, application-level QoS (Quality of Service) and congestion control, exhibit three common properties at the data plane: they need to access and modify state, to perform computations and to access application semantics – this is critical since many network functions are best expressed in terms ...

In this paper, the authors introduce MMPTCP; a novel transport protocol which aims at unifying the way data is transported in data centers. MMPTCP runs in two phases; initially, it randomly scatters packets in the network under a single congestion window exploiting all available paths. This is beneficial to latency-sensitive flows. During the second phase, ...

The increasing need for ubiquitous Internet connectivity has led to the deployment of wireless access infrastructure, including public Wi-Fi networks used for mobile data offloading. Despite the density of public Wi-Fi hotspots especially in residential areas, these networks are severely underutilized, with an average of ten percent of active users and an average of one ...

Can users get network latency between any two servers at any time in large-scale data center networks? The collected latency data can then be used to address a series of challenges: telling if an application perceived latency issue is caused by the network or not, defining and tracking network Service Level Agreement (SLA), and automatic ...

Meraki is a cloud-based network management system which provides centralized configuration, monitoring and network troubleshooting tools across hundreds of thousands of sites worldwide. As part of its architecture, the Meraki system has built a database of time-series measurements of wireless link, client and application behavior for monitoring and debugging purposes. This paper studies an anonymized ...

Datacenter operators rely on low-cost, high-density technologies to maximize throughput for data-intensive services with tight tail latencies. In-memory rack-scale computing is emerging as a promising paradigm in Scale-out datacenters capitalizing on Commodity SoC, low-latency and high bandwidth communication fabrics and a remote memory access model to enable aggregation of a rack’s memory for critical data-intensive ...

Traditional techniques for pipeline scheduling in high-level synthesis for FPGAs assume an additive delay model where each operation incurs a pre-characterized delay. While a good approximation for some operation types, this fails to consider technology mapping, where a group of logic operations can be mapped to a single Look-Up Table (LUT) and together incur one ...

The fairly recent explosion in the availability of reasonably fast wireless and mobile data networks has spurred demand for more capable mobile computing devices. Conversely, the emergence of new devices increases demand for better net-works, creating a virtuous cycle. The current concept of a smartphone as an always-connected computing device with multiple sensing modalities was ...

Multi-Version Concurrency Control (MVCC) is a widely employed concurrency control mechanism, as it allows for execution modes where readers never block writers. However, most systems implement only Snapshot Isolation (SI) instead of full serializability. Adding serializability guarantees to existing SI implementations tends to be prohibitively expensive. The authors present a novel MVCC implementation for main-memory ...