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Copy selection method based on copy response time prediction

A technology of response time and copy, applied in electrical components, transmission systems, etc., can solve problems such as insufficient consideration of the degree of influence and imprecise prediction.

Active Publication Date: 2014-10-22
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

However, this method does not fully consider the difference in the impact of each replica response time on the prediction, and the entire prediction is not rigorous

Method used

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  • Copy selection method based on copy response time prediction
  • Copy selection method based on copy response time prediction
  • Copy selection method based on copy response time prediction

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Embodiment Construction

[0062] The technical problem to be solved by the present invention is how to scientifically analyze the replica response time of N times in history so as to predict the replica response time of N+1 times. Provides a replica selection algorithm based on replica response time prediction. Considering the influence of replica response time of each visit on future replica response time prediction, the weighted calculation is performed on historical N times statistical data, and the prediction result is fed back to User, the user selects the copy with the shortest response time for access

[0063] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0064] Such as figure 1 As shown, let SF i .DB j .Replica r Represents the copy r of the data block j of the file i, and the server and the client use an active message transmission mechanism to facilitate the master server (Master Server, MS) to count the response tim...

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Abstract

The invention discloses a copy selection method based on copy response time prediction. Compared with an existing copy response time prediction algorithm, the method provided by the invention emphatically considers that the influence degree of sampling values of copy response time of different moments on prediction of copy response time is different. Closer is a sample to a prediction point, larger is a weight value, and otherwise, the weight value is smaller. Such a model solves the problem of different influence degree of influence factors on copy response time in different periods, thereby improving prediction precision.

Description

technical field [0001] The invention relates to a copy selection method in a cloud environment, in particular to a copy selection method based on copy response time prediction. Background technique [0002] With the rapid development of Internet technology, the data on the Internet is rushing head-on like a tsunami, which directly reflects the relative lack of human data processing ability. At present, in the face of extremely large data, effective management methods are required. At the heart of the problem is uncontrollable data growth and poor resource utilization. [0003] Cloud storage (cloud storage) is a new concept extended and developed on the concept of cloud computing (cloud computing), and it has been a research hotspot since its appearance. The next-generation Internet puts forward higher requirements for storage, and the storage system faces new challenges in the following aspects. (1) The demand for storage capacity is greater; (2) The performance of the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 徐小龙邵军章韵
Owner NANJING UNIV OF POSTS & TELECOMM
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