How can I troubleshoot JMeter performance issues?

I'm experiencing performance issues with my JMeter tests. What should I check first?

First, check your test plan for any unnecessary listeners or assertions that might be slowing down the execution.

I've already removed some listeners. What else could be causing the slowdown?

Look at your thread group settings. Ensure that the number of threads and ramp-up period are configured correctly for your test.

What about the server I'm testing against? Could that be a factor?

Absolutely! If the server is under heavy load or has limited resources, it can affect your test results significantly.

Are there any specific JMeter settings I should optimize for better performance?

Yes, consider using the 'Non-GUI' mode for running tests and increasing the heap size in the JMeter startup script.