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Method for predicting WEB service connection success rate

A technology of WEB service and forecasting method, applied in the direction of digital transmission system, data exchange network, electrical components, etc., can solve the problems of constant assumption deviation of related parameters, underestimation of WEB service performance, overestimation, etc., so as to improve the accuracy of forecasting The effect of rate and accuracy

Inactive Publication Date: 2015-01-07
CHENGDU GKHB INFORMATION TECH
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  • Summary
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  • Claims
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AI Technical Summary

Problems solved by technology

This static analysis method has great defects: due to the rapidly changing network and system environment on which WEB services are running, various parameters that affect reliability, such as bandwidth, packet loss rate, link failure rate, message field length, etc., It is impossible to maintain a constant value, which is a huge deviation from the assumption that the relevant parameters are constant; since the parameters given in the service level agreement are upper and lower limit values, the actual operating value may be higher or lower As a result, the reliability prediction method based on service level agreements overestimates or underestimates the actual performance of WEB services

Method used

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  • Method for predicting WEB service connection success rate
  • Method for predicting WEB service connection success rate
  • Method for predicting WEB service connection success rate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment one: if figure 1 As shown, firstly, the connection success rate data sequence of the WEB service is obtained at fixed time intervals; the connection success rate data sequence of the WEB service is obtained by testing the url address of the WEB service on the SOAP UI test platform.

[0031] Set the connection success rate data sequence to have connection success rate values ​​at t moments, and the connection success rate value is cr(i), 1≤i≤t, 1≤t≤∞;

[0032] Then perform interval classification on the obtained WEB service connection success rate data sequence;

[0033] The minimum value of t connection success rates is MIN, MIN=min{cr(i)|1≤i≤t};

[0034] The maximum value among t connection success rates is MAX, MAX=max{cr(i)|1≤i≤t};

[0035] Divide the interval from MIN to MAX into p categories, p is a positive integer; set the mapping function from the xth connection success rate value to the lth category as map(x), 1≤x≤t, 1≤l≤ p; if and only if ...

Embodiment 2

[0047] Embodiment two: if figure 2 As shown, the process of this embodiment is basically the same as that of Embodiment 1, the difference is: after calculating the average increment EINC of the connection success rate value at time t+1 relative to the connection success rate value at time t, calculate PRCR=cr (t)+EINC, get PRCR.

[0048]Then set t connection success rate measurement values, calib(x) is the incremental correction value between adjacent connection success rate measurement values, 1≤x≤t; calculate calib(x)=inc(map(x)) -(cr(x+1)-cr(x)), get the incremental correction value between adjacent connection success rate measurement values;

[0049] For the t connection success rate data series as a whole, set its average incremental correction value to ECALIB;

[0050] calculate Get the average incremental correction value of the connection success rate data series.

[0051] Finally, the predicted value of the connection success rate is adjusted by the average incr...

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Abstract

The invention discloses a method for predicting a WEB service connection success rate and belongs to the field of software reliability test. The method comprises the following steps: acquiring a sequence of a series of measured values of the WEB service connection success rate according to the fixed unit time interval; defining and calculating the distribution classes where the measured values are positioned and calculating a transition probability matrix between the classes; and finally, calculating the connection success rate measured value at t moment plus a mean transfer increment and plus an increment correction value, and thus obtaining a predicted value of the connection success rate at the (t+1) moment. The defects that the SLA standard is excessively depended and the parameters are assumed to be constant and invariable in the traditional WEB prediction models and methods are overcome, and the model support and analysis means can be provided for WEB service reliability research.

Description

technical field [0001] The invention belongs to the field of software reliability prediction, in particular to a method for predicting the success rate of WEB service connection. Background technique [0002] As a new type of distributed component model, WEB service is playing an increasingly important role in the fields of e-commerce and enterprise application integration. It is considered to be the core of SOA (Service-Oriented Architecture, service-oriented computing architecture). One of the technologies, WEB services run in a dynamically changing network environment, and their reliability performance also changes frequently. This dynamism makes the runtime performance and efficiency of WEB services more difficult to predict, control and intervene than traditional forms of software. , therefore, predicting the reliability of WEB services is a key technology to ensure the quality of service-based application systems, and it is also a necessary basis for optimizing WEB ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26
Inventor 夏云霓陈鹏罗辛刘杰朱庆生吴磊
Owner CHENGDU GKHB INFORMATION TECH
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