LoadRunner, Mercury

8/7/2019 LoadRunner, Mercury

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Load RunnerLoad RunnerMercury Performance TestMercury Performance TestToolTool


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Topics to be CoveredTopics to be Covered

Why Performance ?Why Performance ?

Definitions: Performance TestingDefinitions: Performance Testing

Benchmark DesignBenchmark Design

Performance Testing ToolsPerformance Testing Tools LoadRunner ComponentsLoadRunner Components

What is load testing process?What is load testing process?

Getting Familiar with Mercury ToursGetting Familiar with Mercury Tours Application RequirementsApplication Requirements


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Why Performance?Why Performance?

Does the application respond quickly enough for theintended users?

Will the application handle the expected user load

and beyond? Will the application handle the number of

transactions required by the business?

Is the application stable under expected and

unexpected user loads? Are you sure that users will have a positive

experience on go-live day?


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Define Stress/Load/Performance TestingDefine Stress/Load/Performance Testing

Stress TestingStress Testing: Stress Testing is done in order to check: Stress Testing is done in order to check

when the application fails by reducing the system resourceswhen the application fails by reducing the system resources

such as RAM, HDD etc. and keeping the number of users assuch as RAM, HDD etc. and keeping the number of users as

constant.constant. Load TestingLoad Testing: Load Testing is done in order to check when: Load Testing is done in order to check when

the application fails by increasing the number of users andthe application fails by increasing the number of users and

keeping the system resources as constant.keeping the system resources as constant.

Performance TestingPerformance Testing: The term Performance can mean: The term Performance can meanmeasuring response time, throughput, resource utilization, ormeasuring response time, throughput, resource utilization, or

some other system characteristic( or group of them), bysome other system characteristic( or group of them), by

varying the number of users.varying the number of users.


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BenchmarkDesignBenchmarkDesign

The Benchmark is the representative workload used during theThe Benchmark is the representative workload used during the

performance test run. It should be representative of the likelyperformance test run. It should be representative of the likely

realreal--world operating conditions.world operating conditions.

Benchmark is provided by the client.Benchmark is provided by the client. In Industry scenario the benchmark is as follows:In Industry scenario the benchmark is as follows:

No. of transactions passed per second >= 8No. of transactions passed per second >= 8

Response time


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Performance Testing ToolsPerformance Testing Tools

Segue Silk PerformerSegue Silk Performer

Rational Team TestRational Team Test

Mercury Load RunnerMercury Load Runner

Empirix eEmpirix e--Load/RSW)Load/RSW)

Soft Light Site Tools LoaderSoft Light Site Tools Loader


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LoadRunner ComponentsLoadRunner Components

The Virtual User Generator captures end-user business

processes and creates an automated performance testing

script, also known as a virtual user script.

The Controller organizes, drives, manages, and monitors theload test.

The Load Generators create the load by running virtual

users.

The Analysis helps you view, dissect, and compare the

performance results.

The Launcher provides a single point of access for all of the

LoadRunner components.


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What is the load testing process?


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Getting Familiar withMercury Tours

Opening Mercury Tours

Make sure that the sampleWeb server is

running. Open the Mercury Tours application.

Log into Mercury Tours.

Reserve a flight.

End your Mercury Tours session.


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Application Requirements

Mercury Tours must successfully handle 10 concurrenttravel agents.

Mercury Tours must be able to process 10 simultaneousflight bookings with response time not exceeding 90seconds.

Mercury Tours must be able to handle 10 travel agents

running simultaneous itinerary checks with responsetime not exceeding 120 seconds.

Mercury Tours must be able to handle 10 agents signingin and signing out of the system with response time not

exceeding 10 seconds.


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Building Scripts


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Introducing the Virtual User Generator (VuGen)

How do I start recording user activities?

How do I record a business process to create a script?

How do I view the script?


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Introducing the Virtual User

Generator (V

uGen)


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How do I start recording user

activities?1.1. Open Virtual User Generator.Open Virtual User Generator.

2.2. Create a single protocol Web script.Create a single protocol Web script.


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How do I record a business process

to create a script?First Step: Set Recording OptionsFirst Step: Set Recording Options

Recording LevelsRecording Levels


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How do I record a business process

to create a script?Contd

1.1. Start recording on the Mercury Tours Web site.Start recording on the Mercury Tours Web site.

2.2. Login to the Mercury Tours Web site.Login to the Mercury Tours Web site.

3.3. Enter flight details.Enter flight details.

4.4. Select a flight.Select a flight.

5.5. Check the itinerary.Check the itinerary.

6.6. Click sign off in the left pane.Click sign off in the left pane.

7.7. Click Stop on the floating toolbar to stop the recordingClick Stop on the floating toolbar to stop the recording ..

8.8. Choose File > Save or click the Save button. TypeChoose File > Save or click the Save button. Type

basic_tutorial in the File name box and click Save.basic_tutorial in the File name box and click Save.


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How do I view the script?

Tree ViewTree View

Script ViewScript View

Tree ViewTree View

ScriptV

iewScriptV

iew


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Playing Back Your

Script


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How do I set the run-time behavior?

How do I watch my script running in real time?

Where can I view a summary of the playback?


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Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings Run LogicRun Logic


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Contd..

Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings -- PacingPacing


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Contd..

Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings -- LogLog


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Contd..

Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings Think TimeThink Time


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Contd..

Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings MiscellaneousMiscellaneous


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Contd..

Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings Speed SimulationSpeed Simulation


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Contd..

Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings Browser EmulationBrowser Emulation


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Contd..

Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings ProxyProxy


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Contd..

Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings PreferencesPreferences


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Contd..

Choose VUser > RuntimeChoose VUser > Runtime--SettingsSettings Content CheckContent Check

Create NewApplication and New RuleCreate NewApplication and New Rule


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How do I watchmy script running in

real time?

Choose Tools > General Options and select the Display tab.


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Where can I view a summary of the

playback?

Go to Execution Log in VUGen screen


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Solving Common

Playback Problems


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What is Correlation?

Preparing Mercury Tours for Playback Errors

How do I work with unique server values?


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What is Correlation?

Many applications use dynamic values that change each timeyou use the application. For example, some servers assign aunique session ID for every new session. When you try to

replay a recorded session, the application creates a newsession ID that differs from the recorded session ID.

LoadRunner addresses this issue through correlation.

Correlation saves the changing values, in our case thesession ID, to a parameter. When running the emulation,the Vuser does not use the recorded valueinstead, it usesthe new session ID, assigned to it by the server.


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Preparing Mercury Tours for

Playback Errors1. Open Mercury Tours.

Choose Start > Programs > Mercury LoadRunner > Samples > Web >MercuryWeb Tours Application.

2. Change the server options.

ClickSERVER OPTIONS in the left pane. Select the Setting 3 option.

Scroll down to the bottom of the page and click the Reconfigure ServerDetails button. Scroll down to the bottom of the page and click the Returnto the Mercury Tours Homepage link. This setting tells the server not toallowduplicate session IDs.(Note that if you have IIS installed on your machine, you will need to modifythe settings for this application. Search for the file xitami.cfgin the xitamifolder, and open it in a text editor. Locate the line portbase=1000, andmodify it to portbase=1001. Save and exit the file.)

3. Close the browser.

4. Record the script again to create a new script with dynamic values.


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How do I work with unique server

values?1. Record the script again.

2. Replay the script.

3. Scan the script for correlations.

4. View the correlations.

5. Correlate the Session ID.

6. Examine the syntax of the correlation statement.

7. Play the script again.

8. Fix the server configuration.

Choose Start > Programs > Mercury LoadRunner > Samples > Web >MercuryWeb Tours Application to open Mercury tours.

ClickSERVER OPTIONS in the left pane. Clear all of the options. Scrolldown to the bottom of the page and click the Reconfigure Server Detailsbutton.

Close the browser.


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Preparing a Script for

Load Testing


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How do I measure business processes?

How do I emulate multiple users?

How do I verify Web page content?

Did my test succeed?


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How do I measure business processes?

Creating Transactions Re-Record the script usingTransactions

The transactions would be created for the following pages:

1. URL Access2. Login

3. Flight Button click

4. FindFlight_Continue_Button

5. SelectFlight_Continue_Button

6. Purchase Flight Button

7. Check Itinerary

8. Log Off


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How do I emulate multiple users?

Parameterization Step1

Right Click the textRight Click the text


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How do I emulate multiple users? Contd..

Parameterization Step2 Select or Create Parameter

Type theType the

parameterparameternamename

Click the buttonClick the button


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Parameterization Step3 Parameter Properties

Select Parameter TypeSelect Parameter Type

Create FileCreate File


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Parameterization Step4 Define Parameter and Close


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Parameterization View Parameter


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How do I verify Web page content?

Checkpoints Two Types

Text Checkpoint - checks that a text string appears on a

Web page.

Image Checkpoint - checks for an image on a Web page.


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How do I verify Web page content? Contd..

Text Checkpoint Go to Tree View

Right ClickRight Click

ClickHereClickHere


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How do I verify Web page content? Contd..

Image Checkpoint Go to Tree View

Right ClickRight Click

ClickHereClickHere


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Did my test succeed?

Playback the Script

1. Enable image checks.

2. Run the script.

3. Locate the text check.4. Locate the image check.


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Creating a Load Testing

Scenario


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Introducing the LoadRunner Controller

What mixture of users should be part of the load test?

How do I generate a heavy load?

How do I emulate real load behavior? How do I emulate different types of users?


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Introducing the LoadRunner Controller

Scenario Objective

The objective is to create a scenario that emulatesthe behavior of ten travel agents simultaneously

logging on, searching flights, purchasing flights,

checking itineraries, and logging off the system.


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Introducing the LoadRunner Controller Contd..

Starting the Controller

Open Mercury LoadRunner - Choose Start >Programs > Mercury LoadRunner > LoadRunner.

Open the Controller. - In the Load Testing tab, clickRun Load Tests. The LoadRunner Controller opens.

Select a Scenario Type. Manual or Goal Oriented

Scenario


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What mixture of users should be part of the load test?

Eight users would be added simultaneously and twoafterwards

1. Add a script to the load test.

2. Begin designing the load test scenario.3. Change the Group Name and number ofVusers.

1. Click the Details button.

2. In the Vuser Quantity box, enter 8.

3. Click on OK.


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How do I emulate real load behavior?

Edit Schedule

1. Change the Scenario Schedule default settings.

2. Specify a gradual start. (Ramp Up)

3. Initialize the Vusers. (To minimize CPUconsumption)

4. Schedule the duration.

5. Sch

edule a gradual closure.( RampD

own)6. View Graphical representation of the scheduler.

Click OK


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How do I emulate different types of users?

Set Runtime Settings

1. Open the Run-Time settings.

2. Enable think time.

3. Enable logging.

4. Browser Emulation

5. Content Check

6. Pacing


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Running The Load Test


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The Controller Run View at a Glance How do I run a load test scenario?

How do I monitor the application under load?

How can I increase the load during the test? Did the application perform well under load?


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The Controller Run View at a Glance


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How do I run a load test scenario?

1. Open the Controller Run view.2. Start the scenario.

1.1. Set the path of the result directorySet the path of the result directory

2.2. Click on OK.Click on OK.


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How do I monitor the application under load?

1. Examine the Performance graphs.1. Running Vusers - Whole Scenario

2. Transaction Response Time - Whole Scenario

3. Hits per Second - Whole Scenario

2. Highlight individual measurements.1. Double click the graph to highlight the same


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How can I increase the load during the test?

1. Click the Vusers button. The Vusers windowopens.


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Did the application perform well under load?

1. Visualize the Transaction Response Time anddetermine whether the transaction was within

acceptable limit for the customer.

2. If the transaction response time degrades, lookfor bottlenecks.


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Analyzing Scenario

T i b C dT i b C d


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How does an analysis session work? How do I start my analysis session?

The Analysis Window at a Glance

Did I reach my goals? Did my server perform well?

How can I pinpoint the source of the problem?

How can I publish my findings?


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How does an analysis session work?

1. Were the test expectations met? What was thetransaction response time on the users end under load?What was the average transaction response time of thetransactions?

2. What parts of the system could have contributed to thedecline in performance? What was the response time ofthe network and servers?

d l i i ?


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How do I start my analysis session?

1. Open Mercury LoadRunner.1. Choose Start > Programs > Mercury LoadRunner >

LoadRunner.

2. Open LoadRunner Analysis.

1. In the Load Testing tab, clickAnalyze Load Tests.

3. Open the analysis session file.1. File > Open.

2. From the \Tutorial folder, select

analysis_session and clickOpen.

Th A l i Wi d Gl


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The AnalysisWindow at a Glance

Did I h l ?


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Did I reachmy goals?

Check Transaction Summary Area

Did I h l ?


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Did I reachmy goals? Contd..

Check Transaction Summary Area

Open the Average Transaction Response Timegraph.

Click the check_itinerary transaction, in the Transaction Name column.


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Did my server perform well?

Study the behavior of the Vusers.

ClickRunning Vusers in the graph tree.

Filter the graph so that you see only the time slice when all the Vusers ran

simultaneously.


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Did my server perform well? Contd..

Correlate the Running Vusers and Average Transaction Response Time graphs

to compare their data. Right-click the Running Vusers graph and choose Merge Graphs.

From the Select graph to merge withlist, choose Average Transaction

Response Time.

In the Select type of merge area, select Correlate, and clickOK.

Analyze the correlated graph


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How can I pinpoint the source of the problem?

From the graph tree, select the Average Transaction Response Time graph.

Filter the Average Transaction Response Time graph to display only thecheck_itinerary transaction.

Right-click the graph, and choose Set Filter/Group by.

In the Transaction Name value box, select check_itinerary.

ClickOK.


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How can I pinpoint the source of the problem? Contd..

Auto-correlate the graph.

Right-click the graph, and choose Auto Correlate. Click OK.


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How can I pinpoint the source of the problem? Contd..

Rename the graph. Choose Rename Graph. Type Auto Correlated - check_itinerary and press ENTER

Analyze the auto-correlated graph. Look at the legend below the graph.

In the Measurement column you can see that the Private Bytes and Pool Nonpaged Bytes,

both of which are memory-related measurements, have a Correlation Match of over 70% withthe check_itinerary transaction.


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How can I publish my findings?

HTML Reports1. From the Reports menu, choose HTML

Report...

2. Select a file name for your report, and the pathwhere you want to save it. ClickSave.


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