We are using the JMETER 5.2.1 tool from GUI, for our performance tests and this if my first time using it.

I would like to simulate a 24 hours run of our service, when I have 30,000 agents registered and each one send 10 queries a day (300,000 queries a day in total).

For that purpose, I have defined a Thread Group with the following configuration:

Number of Threads: 30,000

Ramp-up period: 40,000

Loop count: 10

Duration: 86,400 (24 hours)

For some reason the JMETER run finishes after 11 hours only!
I don't understand why because as you can see I have set the Duration to be 24 hours.

Any suggestions?