Jmeter scheduler is configured
Thread group settings Jmeter there is a deployment of settings, the start time of this thread group is used to set the script execution, end time, duration and start delay time. When you need to midnight performance tests will use this feature.
ps: a scheduler configured to set, the number of previous cycle needs to be set to always
Start Time: When to start testing program, start delay will cover it. When the start time has passed, when the current time manually run the script also will cover it (but will not change the page display start time).
End time: When the end of the test plan, the duration will cover it.
Duration (seconds): how long the test program will cover the end time.
Start delay (seconds): how long the test plan delayed start, it will cover the start-up time.
For example figure: 200 thread start within 5 seconds, pressurized continuous 30S, 30S back pressure to the automatic stop