What are JMeter best practices?

• To overcome limitations of JMeter in distributed environment:
• Limit the Number of Threads
• Using a proxy server
• Using variables
• Reduce resource requirement
• Check the JMeter logs
• Erase the local path from CSV Data Set Config
• Follow file naming convention

• JMeter has some limitations especially when it is run in a distributed environment. To use JMeter efficiently for testing, you should use following guidelines:

• The maximum number of threads you can effectively run with JMeter is 300.
• This limit is because of hardware's capabilities. If JMeter is made to run with more number of threads, the accuracy of timing information will decrease

• The Proxy server helps you to abstract out certain common elements from the recorded samples.
• Moreover, it is useful features to record your testing.

• Some test plans need to use different values for different users/threads.
• For example, you might want to test a sequence that requires a unique login for each user.
• This above is achieved easily using variables.

• The GUI mode consumes a lot of computer memory under heavy load. It causes performance issues.
• There're some tips to reduce resource requirement:

• Use non-GUI mode
• Disable the "View Result Tree" listener during the Load test. Because it consumes more memory and causes JMeter running to run out of memory.
• Disable all JMeter graphs results
• Use CSV test result format.
• Only save the needed test result. JMeter could take a long time to save very detailed test results.

• Any errors in the test plan or test execution will be recorded in the log files.
• Monitoring the log file help you to find the error early

• If you are using an existing CSV data file that you created on your local computer, you should delete the existing local path (Current path of CSV file).
• If you don't delete the local path, JMeter cannot find the CSV data file on your local PC.