load-testing-using-loadrunner final-read-only

8/14/2019 load-testing-using-loadrunner final-read-only

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Load Testing needs

Due to application complexityDue to failure in a business processDifficult to find the root cause of a problem in applicationdeployment process


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Load Testing find out

Does the application respond quickly enough for theintended users?Will the application handle the expected user load andbeyond?Will the application handle the number of transactions

required by the business?Is the application stable under expected and unexpecteduser loads?


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Types of Load Testing Tools

LoadRunner : Mercury Interactivee-Load :EmprixSilk Performer :SeagueQACenter : Compuware

Rational Suite Test Studio : IBM Rational


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Mercury Interactive : LoadRunner

LoadRunner tool is designed for load testingCurrent version 8.1Support with various environments: Java, .Net, UNIX, CitixMetaFrame, XML and other environmentsHaving features included with Java/JE22 , SAP, .Net Diagnostics tool

LoadRunner offers a host of capabilities including WAN emulationsupport. A Web transaction breakdown monitor helps isolateperformance problems, while the tool's data wizard helps developerscreate data-driven tests quickly. In addition, the new tuning moduleadd-on provides component test libraries and a knowledge base thathelps isolate and resolve performance bottlenecks.


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System Requirements


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Load Runner Components

The Analysishelps youview, dissect,and comparetheperformance

results.

The Virtual UserGenerator capturesend-user businessprocesses andcreates anautomatedperformance testingscript, also knownas a virtual userscript.

The Controllerorganizes,drives,manages, andmonitors theload test.

The Loa d

Ge ne ra tors crea te the loa d by run ning virtual us er s.

.


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How LoadRunner works


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Load Testing Process with in LoadRunner


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Performance Testing Approach

Finding the Performance testing goals using testing approachType of load testAverage Response timeUser load estimationUser load distributionUser activity analysisProduction environment analysis

Performance Testing tools


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Type of load test

Load test

Load test determines how is the performance of application under theconcurrent user sessions for typical user scenario. The think time takeninto consideration in these test scripts.

Stress test

Stress test examines how application behaves under maximum load. Insimple terms find the upper threshold for the application below which itcan work normally. Think time ignored in these tests.

Performance test

Performance test indicates response time for the entire application fromthe users perspective.


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User Load Estimation

Performance Testing requirements will give an idea ofusers load or the number of users using the product. Thiswill determine the load to be used against the product intesting.


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User load distribution

This factor will input to the scenarios to be used and configured inthe load test.


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User activity analysis

By understanding the application ( Use Cases or DesignDocuments)Find out the user activities.Nothings just general manual script in order to performthe such action.( Basic Flow )


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Production Environment Analysis

A discussion with Business analyst or from requirementspecification design document will throw light ondeployment environmentMirror the production environment into a testingenvironment.


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Create Vuser Scripts

Using LoadRunner-VUGen

Open VUGen fromStart>All Programs>Mercury>Load Runner

If you had installed in your PC


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Create Vuser Scripts : VUGen

To Create new script:Select theCreate / Edit Scripts Link


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VUGen: Create Vuser Scripts Cont.

To Create New ScriptClick on the New VuserScript Link

To ope n e xis ting S criptClick on the Ope n Exis ting Script Link


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To record New Script1. Select the Protocols from

available Protocols2. Click OK button


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Click on the RecordApplication Link


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Under Application type- Internet Applications- Win Application

URL addressforapplicationor web

Working Directory:Where you can savethe script.

Program to recordMicrosoft Internet Explorer or Netscapeor Mozilla

Record Into Actionvuser_initActionsvuser_logout


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VUGen: Recording Summary


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VUGen: Verify Replay Summery

Click on the VerifyReplay link

To View the Results:Click on the VisualTest Results link


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Define a Scenario

Using the LoadRunner Controller,

Set up the load test by defining the scenarios.


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Define a Scenarios cont


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Define a Scenarios cont.


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Controller Monitors


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Run the Scenario

Drive, manage, and monitor the load test from the LoadRunner

Controller .


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Running the Scenario cont.


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Analyze the results

Use LoadRunner Analysis to create graphs and reports, and

evaluate the performance.


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Results: Analysis Summary


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Results: Transaction Summary


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Data Collection from various result graphs

Based on the various graph, we will able to collect

following data metrics .Response time for each transactionTotal load on the serverTest scenarios details, Run Time setting detailTotal hits and hits/secondTotal Pass , Failed, Stop transactionsNumber of processes running on serverMemory detailCPU utilization


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Report Generation

Generate two types of reports

Load runner detailed reports: Word and HTMLversionGeneric reports in word version for the activitiesperformed in the scenario and response time detailswith other observation and conclusions for themanagement

Generating graphs also helpsHelps in tracking per load cycle resultsEasy to interpret for people


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