need
Upload a file to the server (put) and download a file to the local (get).
test steps
1. Create a thread group.
2. Thread group --> Add --> Configuration element --> FTP request default value (optional, equivalent to setting a default value for "server name or IP", fill in the "server name or IP" of the subsequent ftp request Name or IP" can be left out)
3. Thread Group-->Add-->Sampler-->FTP Request
IP: IP of the FTP server
Remote File: A file on the FTP server
Local File: The path where the file is stored locally
Select get to download
4. Follow step 3 to add another FTP request, and select the put upload method.
5. Add a listener. Thread Group-->Add-->Monitor-->Spline Visualizer (spline graph)
spline visualizer should only be available in JMeter 2.13 version, JMeter 3 has removed this Component.