The TCP control block interdependence in fixed networks—new performance results

Savorić, Michael; Karl, Holger; Wolisz, Adam

doi:10.1016/s0140-3664(02)00155-x

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…First, some operating systems allow TCP metrics to be shared between an active connection and a newly started connection (ensemble sharing). The ensemble approach has been proven successful by several authors [8], [9], and there exist similar approaches in the literature [10]. However, the most common strategy is temporal sharing where a closing TCP connection caches metrics for subsequent flows to use.…”

Section: Tcp Metric Cachingmentioning

confidence: 99%

Enhanced metric caching for short TCP flows

Hurtig

Brunström

2012

2012 IEEE International Conference on Communications (ICC)

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Internet-based applications that require low latency are becoming more common. Such applications typically generate traffic consisting of short, or bursty, TCP flows. As TCP, instead, is designed to optimize the throughput of long bulk flows there is an apparent mismatch. To overcome this, a lot of research has recently focused on optimizing TCP for short flows as well. In this paper, we identify a performance problem for short flows caused by the metric caching conducted by the TCP control block interdependence mechanisms. Using this metric caching, a single packet loss can potentially ruin the performance for all future flows to the same destination by making them start in congestion avoidance instead of slow-start. To solve this, we propose an enhanced selective caching mechanism for short flows. To illustrate the usefulness of our approach, we implement it in both Linux and FreeBSD and experimentally evaluate it in a real test-bed. The experiments show that the selective caching approach is able to reduce the average transmission time of short flows by up to 40%.

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Section: Tcp Metric Cachingmentioning

confidence: 99%

Enhanced metric caching for short TCP flows

Hurtig

Brunström

2012

2012 IEEE International Conference on Communications (ICC)

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“…This task is similar to the controllerÕs job in existing pure network-information reuse approaches like the ensemble or temporal (one-time) TCP control block interdependence (TCBI) [4][5][6]. Second, the common congestion controller is responsible for the continuous network-information exchange between concurrent TCP connections of an ensemble to reach a common congestion control for this ensemble.…”

Section: Introductionmentioning

confidence: 99%