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Upload and download traffic often coexist in mobile networks. However, TCP download throughput could be substantially degraded by upload traffic even if the downlink is not the bottleneck. Previous works such as RSFC and TCP-RRE can substantially improve TCP download throughput in the presence of concurrent TCP upload flows, albeit at the expense of significantly degraded upload throughput performance...
Today's datacenter is shared among various applications with different QoS requirements, which poses a great challenge to deliver low delay transport with high throughput. Most of works address this challenge by reducing the in-network delay, but assumes a negligible local delay. However, we show that this assumption does not hold for a multi-tenant datacenter that a physical machine is shared by...
Mobile data networks exhibit highly variable data rates and stochastic non-congestion-related packet loss. These challenges result in key performance bottlenecks in current Transmission Control Protocol (TCP) implementations: bandwidth inefficiency and large end-to-end delay. This work addresses these challenges by first developing a Sliding Interval based Rate Adaptation (SIRA) that tracks bandwidths...
When files are striped in a parallel I/O system, requests to the files are decomposed into a number of sub-requests that are distributed over multiple servers. If a request is not aligned with the striping pattern such decomposition can make the first and last sub-requests much smaller than the striping unit. Because hard-disk-based servers can be much less efficient in serving small requests than...
In timing analysis attackers study the transmission pattern of different nodes in a network with the goal of extracting information about users, applications, or the structure of the network, even when the traffic is encrypted. Defeating timing analysis attacks requires expensive traffic mixing measures that equalize the transmission pattern at all nodes; such measures are especially expensive for...
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