tcp - ip flows bandwidth
Improving XCP to Achieve Max-Min Fair Bandwidth Allocation
White Paper In a multi-bottleneck environment, XCP may achieve as low as 80% utilization at a bottleneck link and consequently some flows may only receive a small fraction of their max-min fair rates. TCP is shown to be inefficient and instable in high speed... [08 Jul 2008]
Investigation of Ethernet Switches Behavior in Presence of Contending Flows at Very High-Speed
White Paper This paper examines the interactions between high speed Ethernet switches and TCP in high bandwidth delay product networks. Several conditions in which scheduling mechanisms introduce heavy unfair bandwidth sharing and loss burst which impact TCP... [08 Jul 2008]
SABUL: A Transport Protocol for Grid Computing
White Paper In order to remove the fairness bias between flows with different network delays, SABUL adjusts its sending rate at uniform intervals, instead of at intervals determined by round trip time. It uses UDP to transfer data and TCP to return control... [10 Apr 2008]
An Integrated Packet/Flow Model for TCP Performance Analysis
White Paper Processor sharing (PS) models for TCP behavior nicely capture the bandwidth sharing and statistical multiplexing effect of TCP flows on the flow level. However, these 'rough' models do not provide insight into the impact of packet-level parameters... [14 Jan 2008]
Improving the Performance of TCP on Guaranteed Bandwidth Connections
White Paper The congestion control mechanisms like slow start and congestion avoidance have to be revised in the context of guaranteed services, where no congestions occur for special flows. Nevertheless, TCP connections often cannot fully exploit the reserved... [14 Jan 2008]
Revisiting the Fair Queueing Paradigm for End-to-End Congestion Control
White Paper These applications can often improve their own performance by not being TCP-friendly, which severely penalizes TCP flows. To be TCP-friendly, a source must behave in such a way as to achieve a bandwidth that is similar to the bandwidth obtained by... [14 Jan 2008]
Queue Delay Estimation and Its Application to TCP Vegas
White Paper In order to do this, the paper investigates the maximum round-trip time achievable in steady state flows fully utilizing available link capacities without marking packets. This paper proposes a modified Vegas algorithm, which can be adjusted to... [14 Jan 2008]
A Multi-Level TCP Model With Heterogeneous RTTs
White Paper This paper studies TCP performance focusing on the mean flow transfer delay and the average number of concurrent flows in the system. Also, the unequal sharing of bandwidth between flows with different RTTs can be treated. [14 Jan 2008]
Improving Distributed Application Performance Using TCP Instrumentation
White Paper The paper describes how this daemon was used to analyze GridFTP data flows with some experimental TCP protocol enhancements. This paper describes how TCP instrumentation can be used to guide more efficient use of the network, using a monitoring... [14 Jan 2008]
Fixed-Point Approximations for TCP Performance Over Bandwidth on Demand GEO Satellite Links
White Paper This paper investigates the use of fixed-point methods for predicting the performance of multiple TCP flows sharing geostationary satellite links. The problem formulation is general in that it can address both error-free and error-prone links... [14 Jan 2008]
Improving the Convergence Time of HighSpeed TCP
White Paper That is, it takes a long time for a new HSTCP flow to achieve fair bandwidth allocation if the existing HSTCP flows have large congestion windows. It is reported that TCP does not perform well in high-speed and long-distance networks. [14 Jan 2008]
Jointly Coordinating ECN and TCP for Rapid Adaptation to Varying Bandwidth
White Paper This paper explores the design of a rapidly-reactive congestion control framework, where the ECN-aware best-effort flows aggressively go after any unused capacity. By making routers mark packets in a much more aggressive manner, the authors are... [14 Jan 2008]
Performance Analysis and Improvement of HighSpeed TCP With TailDrop/RED Routers
White Paper Furthermore, it is observed that the performance of gHSTCP is limited by both TailDrop and RED/ARED routers, thus it develops a modified adaptive RED called gARED to address the problem of simultaneous packet drops among multiple flows. [14 Jan 2008]
A Square Root Formula for the Rate of Non-Persistent TCP Flows
White Paper Using fixed point methods, these formulae can be applied to predict bandwidth sharing among competing HTTP flows subject to Active Queue Management. The formula for the mean transmission rate is shown to boil down to the classical square root mean... [14 Jan 2008]
Optimizing Aggregate Throughput of Upstream TCP Flows Over IEEE 802.11 Wireless LANS
White Paper Thus, the paper proposes a new scheme called TCP ACK Priority (TAP) in which, by allowing an access point to transmit TCP ACKs at the highest priority, the optimal number of competing stations are allowed to contend for media access to utilize... [26 Dec 2007]
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