JMeter performance test steps practical tutorial

1. Jmeter What is it? ？

2. Jmeter install

2.1 JDK install

because Jmeter Is based on java Development , First you need to download and install JDK （ at present JMeter Only to Java 8, Not yet in favor of Java 9）

1. Official website download address ：

http://www.oracle.com/technetwork/java/javase/downloads/index.html

2. choice Java SE 8u151/ 8u152, Click on JDK download

 

3. Install the downloaded JDK

4. Configure system environment variables

2.2 JMeter install

Official website download address ：http://jmeter.apache.org/download_jmeter.cgi

Download the latest JMeter 5.5 edition ：apache-jmeter-5.5.zip

Unzip after download zip package

start-up JMeter
double-click JMeter Decompression path （apache-jmeter-5.5\bin）bin Below jmeter.bat that will do

3. Test case

We choose the most common Baidu search interface ：

3.1 Address of the interface

http://www.baidu.com/s?ie=utf-8&wd=jmeter Performance testing

3.2 Request parameters

ie： Encoding mode , The default is utf-8
wd: Search terms

3.3 Return results

The search results , We can check whether there are search terms in the results wd To determine the success or failure of this request .

4. JMeter scripting

4.1 Add thread group

Right click on the “ test plan ” -> “ add to ” -> “Threads(Users)” -> “ Thread group ”

 

Here you can configure the thread group name , Number of threads , Long preparation time （Ramp-Up Period(in seconds)） cycles , Parameters such as scheduler ：
 

  Because interface debugging needs , We all use the default settings for now , We will come back to the configuration when we actually perform the performance test later .

4.2 add to HTTP request

Right click on the “ Thread group ” -> “ add to ” -> “Sampler” -> “HTTP request ”

For our interface http://www.baidu.com/s?ie=utf-8&wd=jmeter Performance testing , Please refer to the figure below to fill in ：

Http Request details of main parameters ：

4.3 Add view result tree

Right click on the “ Thread group ” -> “ add to ” -> “ Monitor ” -> “ Look at the fruit tree ”

At this time , We run Http request , Modify the response data format to “HTML Source Formatted”, You can see the title of the search results page is ”jmeter Performance testing _ Baidu search “.

4.4 Add user-defined variables

We can add user-defined variables to Http Request parameterization , Right click on the “ Thread group ” -> “ add to ” -> “ The configuration element ” -> “ User defined variables ”：

Add a parameter wd, Store search terms ：

And in Http This parameter is used in the request , The format is ：${wd}

4.5 Add assertions

Right click on the “HTTP request ” -> “ add to ”-> “ Assertion ” -> “ Response assertion ”

 

We verify that the returned text contains the search term , Add parameter ${wd} Go to the mode you want to test ：

4.6 Add assertion results

Right click on the “HTTP request ” -> “ add to ”-> “ Monitor ” -> “ assertion results ”

At this time , Let's run it again and see whether the assertion results in success or failure

4.7 Add aggregation report

Right click on the “ Thread group ” -> “ add to ” -> “ Monitor ” -> “ Aggregation report ”, Used to store performance test reports

such , We have completed a complete Http Interface JMeter Performance test scripting .

5. Perform performance tests

5.1 Configure thread groups

Click thread group , Configure the parameters related to this performance test ： Number of threads , cycles , Duration, etc , Here we configure the number of concurrent users as 10, Duration is 60s

5.2 Perform the test

Click the small green arrow button to start the test , Before testing, you need to click the small broom button to clear the previous debugging results .

6. Analysis test report

After the performance test is completed , Open the aggregation report to see ：

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