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- Congestion Control in Linux TCP
- The TCP protocol is used by the majority of the network applications on the Internet. TCP performance is strongly influenced by its congestion control algorithms that limit the amount of transmitted traffic based on the estimated network capacity and utilization. Because the freely available Linux operating system has gained popularity...
- Tags: Network, Congestion, TCP, TCP Performance, TCP Protocol, Tcp/Ip, Linux, Networking, UNIX, Operating Systems, Open Source, Software
- White papers
Additional Resources
- Evaluating the Performance of TCP Stacks for High-Speed Networks
- The TCP congestion control algorithm has been remarkably successful in making the current internet function efficiently. However, it has become clear that it can perform very poorly in networks with high Bandwidth-Delay Product BDP paths. In response to this poor performance, numerous proposals have been made for changes to the...
- Tags: Algorithm, Performance, Congestion, TCP, Tcp/Ip, Performance Management, Engineering, Networking, Human Resources, Workforce Management
- White papers 2005-06-27
- Modeling TCP Performance With Proxies
- This paper investigates the TCP dynamics and performance over proxies that shorten the TCP feedback loop by segmenting the end-to-end connection. Such proxies are often used to improve TCP performance, e.g., a splitting/spoofing proxy in the satellite communication, and more commonly, a web cache. By analysis, the author's attempts to...
- Tags: Proxy, TCP, Modeling, Tcp/Ip, Networking
- White papers 2007-01-01
- Understanding TCP Over TCP: Effects of TCP Tunneling on End-to-End Throughput and Latency
- TCP tunnel is a technology that aggregates and transfers packets sent between end hosts as a single TCP connection. By using a TCP tunnel, the fairness among aggregated flows can be improved and several protocols can be transparently transmitted through a firewall. Currently, many applications such as SSH, VTun, and...
- Tags: Latency, TCP, Tcp/Ip, Networking
- White papers 2007-11-16
- M-TCP+: Using Disconnection Feedback to Improve Performance of TCP in Wired/Wireless Networks
- This paper proposes the M-TCP+ algorithm for heterogeneous wired/wireless networks. The algorithm is a modification of M-TCP that was proposed for deployment in mobile cellular networks. It is recommended that Internet hosts enable the delayed acknowledgement delayed ACK option to maximize network bandwidth by reducing the number of ACKs sent...
- Tags: Algorithm, Performance, Network, TCP, M-TCP+ Algorithm, Tcp/Ip, Engineering, Networking
- White papers 2007-06-28
- Enhancing Cable Modem TCP Performance
- This white paper discusses the inherent bi-directional behavior of TCP and its performance when used in conjunction with the DOCSIS MAC protocol. It provides typical examples of degradation in TCP throughput and describes how the addition of application awareness and acknowledgment filtering software can be used to improve TCP throughput.
- Tags: Cable Modem, TCP, Texas Instruments Inc., Tcp/Ip, Networking, Cable, Telecommunications, Personal Technology
- White papers 2003-07-01
- On Individual and Aggregate TCP Performance
- As the most widely used reliable transport in today's Internet, TCP has been extensively studied in the past decade. The TCP behavior under many competing TCP flows has not been sufficiently explored. This paper uses extensive simulations to investigate the individual and aggregate TCP performance for large number of concurrent...
- Tags: TCP, Tcp/Ip, Networking
- White papers 2007-01-01
- Making TCP Viable as a High Performance Computing Protocol
- Generally, TCP is reputed to be too slow and bloated to be useful in high performance computing. However, it has very definite advantages over proprietary or specialized protocols and could potentially be very useful in high performance computing. The authors researched different implementations of MPI over TCP to distinguish between...
- Tags: High-performance Computing, High-performance, TCP, Tcp/Ip, Networking
- White papers 2006-10-06
- Augmented Split-TCP Over Wireless LANs
- This paper introduces a new split-TCP approach for improving TCP performance over IEEE 802.11-based wireless LANs. TCP over wireless LANs is not aggressive, which is a fundamental reason for poor performance. This paper proposes augmented split-TCP (AS-TCP) to mitigate this problem. The scheme extends the split-connection approach that divides a...
- Tags: WLAN, TCP, Tcp/Ip, LANs, Networking, Wireless LANs, Wireless
- White papers 2006-02-20
- Delayed Duplicate Acknowledgements: A TCP-Unaware Approach to Improve Performance of TCP Over Wireless
- Since TCP cannot distinguish between packet losses due to transmission errors from those due to congestion, TCP tends to perform poorly on wireless links that are prone to transmission errors. Several techniques have previously been proposed to improve TCP performance over wireless links. Existing schemes typically require an intermediate node...
- Tags: Performance, TCP, Wireless, Tcp/Ip, Networking
- White papers 2007-01-01
- Modeling Scalable TCP Friendliness to NewReno TCP
- Scalable TCP is a simple change to the traditional TCP congestion control algorithm which dramatically improves TCP performance in high speed wide area networks. The focus of this contribution is to model the performance of Scalable TCP algorithm sharing bottleneck link with a NewReno TCP. The analysis is performed during...
- Tags: Congestion, TCP, Analysis, Modeling, Scalable TCP, Tcp/Ip, Networking
- White papers 2007-03-01
- A Large-Scale, Passive Analysis of End-to-End TCP Performance Over GPRS
- In this paper a passive methodology for TCP performance evaluation over General Packet Radio Service GPRS networks is presented that relies on traffic monitoring at the GPRS ingress/egress router interface Gi. Based on the IP and TCP headers of the packets, the end-to-end performance of TCP connections is estimated such...
- Tags: GPRS, TCP, Analysis, Tcp/Ip, Networking, Cellular Phones, Consumer Electronics, Personal Technology
- White papers 2004-02-03
- Performance Evaluation of TCP Over Routing Protocols for Mobile Ad Hoc Networks
- This paper investigates the performance of TCP of various (single-hop and multi-hop) routing protocols for mobile ad hoc networks. Using ns-2, it evaluates the TCP window size, throughput and packet delay over a single TCP connection. The results suggest that the various performance metrics are tightly related, and that TCP...
- Tags: Performance, Mobile, Performance Evaluation, TCP, Routing Protocol, Tcp/Ip, Performance Management, Networking, Human Resources, Workforce Management
- White papers 2006-04-30
- Refined TCP Performance Evaluation With Simple Modeling
- This paper presents analytical results of a TCP Transmission Control Protocol model based on a Markov chain, refining the previous works on performance evaluation of one bulk transfer TCP flow among exogenous traffic. While most of these works are mainly focused on the mean throughput evaluation, this model allows with...
- Tags: TCP, Modeling, Tcp/Ip, Networking
- White papers 2007-01-01
- TCP Performance Re-Visited
- Detailed measurements and analyses for the Linux-2.4 TCP stack on current adapters and processors are presented. The impact of CPU scaling and memory bus loading on TCP performance is also described. As CPU speeds outstrip I/O and memory speeds, many generally accepted notions of TCP performance begin to unravel. In-depth...
- Tags: Duke University, TCP, Tcp/Ip, Networking
- White papers 2007-01-01
- Modelling of Wireless TCP for Short-Lived Flows
- The Transmission Control Protocol TCP is one of the most important Internet protocols. It provides reliable transport services between two end-hosts. Since TCP performance affects overall network performance, many studies have been done to model TCP performance in the steady state. However, recent researches have shown that most TCP flows...
- Tags: Network, TCP, Wireless, Tcp/Ip, Networking
- White papers 2005-04-01
- Scalable TCP Over Satellite Links: Performance Issues and Cross-Layer Design
- This paper analyzes some issues related to the performance of a recently proposed TCP enhancement, Scalable TCP (S-TCP), over satellite links. First S-TCP features and assesses its performance in satellite networks are discussed, by means of numerical simulations, for a wide range of conditions (fixed users, mobile users, and rainy...
- Tags: Performance, TCP, Satellite, Network Technology, Tcp/Ip, Networking
- White papers 2005-07-15
- OPNET Model of TCP With Adaptive Delay and Loss Response for Broadband GEO Satellite Networks
- Transmission Control Protocol TCP provides reliable transport services for Internet applications. Broadband Geostationary Earth Orbit GEO satellite networks play an important role in providing Internet access and network connectivity. They are characterized by long propagation delays and high bit error rates, which negatively affect TCP performance. The paper proposed a...
- Tags: Broadband, TCP, Tcp/Ip, Networking
- White papers 2007-08-12
- SaTPEP: A TCP Performance Enhancing Proxy for Satellite Links
- Satellite link characteristics cause reduced performance in TCP data transfers. This paper presents SaTPEP, a TCP Performance Enhancing Proxy which attempts to improve TCP performance by performing connection splitting. SaTPEP monitors the satellite link utilization, and assigns to connections window values that reflect the available bandwidth. Loss recovery is based...
- Tags: Performance, TCP, Satellite, Loss Recovery, Tcp/Ip, Networking
- White papers 2006-03-29
- Tips and Techniques for Using TCP/IP on i5/OS
- This paper provides various tips and techniques for managing TCP/IP with IBM i5/OS. The paper explains how to optimize performance in a TCP/IP network and provides various recommendations that might improve the network configuration and enable to obtain optimal performance. It provides information about the different ways that TCP/IP can...
- Tags: Technique, Tcp/Ip, Network Technology, Networking
- White papers 2006-05-01
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