How to use JMeter to do Performance Testing

Record JMeter Scripts

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use JMeter’s HTTP(S) Test Script Recorder, please refer to this official document https://jmeter.apache.org/usermanual/jmeter_proxy_step_by_step.html

Running JMeter Scripts

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• Debug scripts on JMeter in GUI Mode

  You can debug your record scripts in GUI Mode until there are no errors

• run test scripts in Non-GUI Mode(Command Line mode) recommend

  jmeter -n -t ..\extras\Test.jmx -l Test.jtl
  

Running JMeter Scripts on Jenkins

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Need Tools

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1. Jmeter - Web Request Load Testing
2. Jmeter-plugins
   • ServerAgent-2.2.1 - PerfMon Agent to use with Standard Set

Test server

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Two virtual machines

• System under test
• Jmeter execution machine, this server is also Jenkins server

Implement

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Develop test script

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Record Scripts - use JMeter’s HTTP(S) Test Script Recorder, please refer to this official document https://jmeter.apache.org/usermanual/jmeter_proxy_step_by_step.html

Create Jenkins job for running JMeter scripts

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1. Create a new item->select Freestyle project

2. Add build step->Execute Windows batch command

   //access to jenkins jobs workspace, empty the last test results
   cmd
   cd C:\Users\peter\.jenkins\jobs\TEST-122 Upload large data\workspace
   del /Q "jtl"\*
   del /Q "PerfMon Metrics Collector"\*
   

3. Add build step->Execute Windows batch command

   //add first run jmeter script command, if you want run others script you can continue to add "Execute Windows batch command"
   jmeter -n -t script/UploadLargeData-1.jmx -l jtl/UploadLargeData-1.jtl
   

4. Configure build email - Configure System

   //Configure System, Extended E-mail Notification
   SMTP server: smtp.gmail.com
   
   //Job Configure, Enable "Editable Email Notification"
   Project Recipient List: xianpeng.shen@gmail.com
   Project Reply-To List: $DEFAULT_REPLYTO
   Content Type: HTML (text/html)
   Default Subject:$DEFAULT_SUBJECT
   Default Content: ${SCRIPT, template="groovy-html.template"}
   
   //Advance setting
   Triggers: Always
             Send to Recipient List
   

Generate test report

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JMeter->Add listener->add jp@gc - PerfMon Metrics Collector, browse Test.jtl, click right key on graph Export to CSV

Analyze test results

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Introduction test scenarios

Using 1, 5, 10, 20, 30, (50) users loading test, record every group user test results

Glossary

• Sample(label) - This indicates the number of virtual users per request.
• Average - It is the average time taken by all the samples to execute specific label
• Median - is a number which divides the samples into two equal halves.
• %_line - is the value below which 90, 95, 99% of the samples fall.
• Min - The shortest time taken by a sample for specific label.
• Max - The longest time taken by a sample for specific label.
• Error% - percentage of failed tests.
• Throughput - how many requests per second does your server handle. Larger is better.
• KB/Sec - it is the Throughput measured in Kilobytes per second.

Example: Test results of each scenario shown in the following table

Test results analysis chart