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Method for processing synchronous priority bursty flow in data center network

A data center network and data flow technology, applied in data exchange networks, digital transmission systems, electrical components, etc., to solve problems such as synchronous priority burst flow

Active Publication Date: 2014-05-14
广西优耐信息技术有限公司
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Problems solved by technology

However, there is a phenomenon in the existing Deadline-Aware Data Center TCP, that is, when the link occupancy rate is high, data flows with the same priority will miss the deadline at the same time due to competition with each other, which is the synchronization priority burst problem
This phenomenon will become more serious when the same high-priority data flow increases, and there is currently no solution for this

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  • Method for processing synchronous priority bursty flow in data center network
  • Method for processing synchronous priority bursty flow in data center network
  • Method for processing synchronous priority bursty flow in data center network

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0050] figure 1 Shown is a schematic diagram of the data center network in the embodiment of the method for processing synchronous priority burst streams in the data center network. Users are connected to multiple working nodes through two top-level switches to form a search application topology network. The user sends a query flow with search keywords to each working node on the network, and the top-level switch distributes the user's query flow to the bottom working nodes, and the response of each working node may return to the working node as the receiving end at the same time. Collect the data streams containing the search results and feed them back to the user. As each working node at the sending end, the data flow answering the user's query flow has a similar size and the same deadline, which is prone to synchronous priority burst flow. The so...

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Abstract

The invention provides a method for processing synchronous priority bursty flow in a data center network. The method comprises the steps that the order of distribution priorities of the data flow is determined according to the magnitude of values of urgency factors pri, the urgency factor pri having the minimal value in a default mode has the lowest priority; an exchanger calculates the speed reduction probability pj for M strips of priority synchronous data flow with request window values larger than expectation window values in the same link; MXpj strips of data flow are randomly selected according to the M strips of data flow, urgency factors prj of the MXpj strips of data flow are regulated into minimal values, sending speed of the MXpj strips of data flow is reduced, and MX(1-pj) strips of data flow of the M strips of data flow are smoothly transmitted under the wire. The method resolves the problem of the synchronous priority bursty flow in the data center network, avoids network congestion, and meanwhile reduces the deadline missing rate.

Description

technical field [0001] The invention relates to a data flow distribution method of a data center network, in particular to a method for processing synchronous priority burst flows in a data center network (DCN), so as to solve the problem of high miss rate. Background technique [0002] Data center is an important part of cloud computing technology, providing a platform for various network services. The service application works in the decentralized aggregation mode (Partition / Aggregate), and the link bandwidth at the aggregation node has always been the main bottleneck affecting the performance of the data center. In addition, these business data flows have service level agreements (SLAs), and user requests need to be responded within deadlines. High burst and mixed long and short service flows lead to the inapplicability of the fair sharing principle of the traditional TCP congestion control protocol. For example, the mixture of long and short flows causes tail delay in t...

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Application Information

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IPC IPC(8): H04L12/807H04L47/27
Inventor 叶进葛志辉林婧张智卫李陶深杨林峰
Owner 广西优耐信息技术有限公司
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