Renan Fischer e Silva

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An important challenge of modern data centers is to reduce energy consumption, of which a substantial proportion is due to the network. Energy Efficient Ethernet (EEE) is a recent standard that aims to reduce network power consumption, but current practice is to disable it in production use, since it has a poorly understood impact on real world application(More)
With the advent of big data, data center applications are processing vast amounts of unstructured and semi-structured data, in parallel on large clusters, across hundreds to thousands of nodes. The highest performance for these batch big data workloads is achieved using expensive network equipment with large buffers, which accommodate bursts in network(More)
Chaining-based key management schemes seem to be the ones that best fit MANETs. The main chaining-based scheme is the Self-Organized Public Key Management System (PGP-Like). However, it is fully vulnerable to impersonation attacks. In order to reduce such vulnerability, this article introduces a new public-key management system for MANETs, the Virtual Key(More)
Various extensions of TCP/IP have been proposed to reduce network latency; examples include Explicit Congestion Notification (ECN), Data Center TCP (DCTCP) and several proposals for Active Queue Management (AQM). Combining these techniques requires adjusting various parameters, and recent studies have found that it is difficult to do so while obtaining both(More)
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