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Method for improving data transmission efficiency in grid environment

A data transmission and grid technology, applied in digital transmission systems, transmission systems, data exchange networks, etc., can solve problems such as affecting the overall performance of transmission, wasting time, failing to overcome servers with faster transmission, and achieving maximum resource utilization efficiency the effect of

Inactive Publication Date: 2012-07-25
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The traditional cooperative allocation strategy does not overcome the disadvantage that the server with the fastest transmission must wait for the slowest server to transmit the last piece of file
In most cases, this will waste a lot of time and eventually affect the overall performance of the transfer

Method used

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  • Method for improving data transmission efficiency in grid environment
  • Method for improving data transmission efficiency in grid environment
  • Method for improving data transmission efficiency in grid environment

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] A method of improving data transmission efficiency in a grid environment comprises the steps of

[0027] Step (1) In the initial stage, each grid FTP server is assigned a file fragment transmission task of the same size, and the file fragment size is determined by bandwidth and weight.

[0028] First, we set an upper limit for the initial file shard size, which depends on the client's maximum bandwidth and the number of replica resources. Although we can download copies from multiple servers in parallel, the collection of file fragments downloaded from multiple lines must go through a single line of the client. It is clear that the client bandwidth becomes the bottleneck of the collaborative allocation architecture to accelerate the download. The upper limit of initial file fragment size InitialPT is calculated as follows:

[0029] InitialPT=ClientMaxBandwidth / NumberOf ReplicaSource (1.1)

[0030] In formula (1.1), ClientMaxBandwidth is the maximum bandwidth of the c...

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Abstract

The invention relates to a method for improving the data transmission efficiency in a grid environment. The document transmission efficiency of a traditional method is low. The method comprises the following steps of: firstly, distributing a document fragment transmission task with the same size to each grid FTP server at an initial stage, wherein the sizes of document fragments are determined bythe bandwidth and the weight; then, when certain servers finish the current document fragment transmission tasks, distributing novel document fragment transmission tasks for the servers; if the transmission fails, retransmitting; finally, setting a termination condition in order to avoid generating too small document fragments; and if the sizes of the residual documents to be transmitted are smaller than the fragment sizes set at the initial stage, transmitting the final residual document fragments immediately. The method can achieve the maximization of the utilization efficiency of resources.

Description

technical field [0001] The invention belongs to the field of grid computing, and in particular relates to a method for improving data transmission efficiency in a grid environment. Background technique [0002] Grid is a virtual environment of resource sharing and coordination work, which can fully absorb various resources and transform them into a kind of available, reliable, standard and economical resources at the same time. The very important role of grid computing is to effectively utilize various resources and perform massive data calculations quickly and accurately. To use efficient time for actual computation, it is necessary to minimize data transfer time. [0003] In the current grid environment, a collaborative allocation architecture is used to solve this problem by using the concurrent transmission of multiple backups in the grid. The traditional cooperative allocation architecture has three strategies to allocate data blocks in multiple backups to improve the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/08H04L1/18
Inventor 吴卿张奇锋倪永军周兴武金恭华赵俊杰郁伟炜吴鹏
Owner HANGZHOU DIANZI UNIV
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