1. Why conduct distributed performance testing?
When conducting high-concurrency performance testing, due to the limitations of the Jmeter tool itself and computer hardware, it cannot meet our requirements for large-concurrency performance testing.
Based on this scenario, we need to use a distributed approach to achieve our high-concurrency performance testing requirements.
2. Principle of distributed performance testing
To conduct distributed performance testing, we first need to have one machine as the master machine (Controller) and other machines as agents (Agent).
During execution, a concurrent test is initiated on the main control machine, and the main control machine distributes the execution script to the agent machine; then the same concurrent test is executed on the agent machine; after the execution is completed, the agent machine sends the test data to the main control machine, and finally the main control machine The control machine summarizes and analyzes the execution results of all agent machines.
For example, if you need to simulate 100 concurrent users, 1 master machine and 4 agent machines, you only need to set the number of threads of the script to 20.
This article uses jmeter on windows as the main control machine and jmeter on linux as the agent machine.
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3. Operation steps
Three easy steps: 1. Start the agent configuration service (1) Modify the agent jmeter\bin\jmeter.properties file, close the SSL service, and add:
server.rmi.ssl.disable=true
(2) Start proxy service
The IP here is the local IP address of the agent.
The service of the main control machine also needs to be started. Under Windows, you only need to run the jmeter-server.bat file.
2. Modify jmeter\bin\jmeter.properties in the same way as the main control machine configuration, add the agent IP and port (the default port of jmeter is 1099), and separate multiple agents with English ",".
remote_hosts=127.0.0.1:1099,192.168.37.128:1099
Turn off the SSL service. server.rmi.ssl.disable=true
Start jmeter on the main control machine, and you can find that the main control machine and agent machine we configured can be seen in the "Start"\"Remote Start" menu.
3. Execute the distributed performance test script to open the script, for example, set the number of threads to 10;
Click "Start"\"Remote Start All", do not click the triangle on the toolbar to start (this can only execute the number of threads on the current machine).
Through the summary report, it was found that 20 sample requests were executed, which was a summary calculation of data from two machines.
Finally, I would like to thank everyone who read my article carefully. Looking at the increase in fans and attention, there is always some courtesy. Although it is not a very valuable thing, if you can use it, you can take it directly!
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