Virtual Users do not start as per configuration settings within an All Day workload load test
With the All Day Workload model within Silk Performer, end users can create a flexible load test scenario, using a method which allows virtual users to be distributed over set intervals. These intervals are defined by a Start / End VUsers value, as well as the duration period. The theory is, with the completion of a one interval, the next interval would then begin.
We have seen within Silk Performer 18.0 and 18.5, apart from the initial interval - the other subsequent intervals (essentially the virtual users), do not start at the point of the test, in which they are due to start and instead, the initial interval continues it's execution for longer than it's defined duration.
This behaviour has been recognised as a bug within Silk Performer and will be addressed in a future release.