Assume that you use Microsoft SQL Server Integration Services (SSIS) in SQL Server 2017. If you run multiple SSIS packages in parallel, the minimum interval value can be reduced to 1 second in the TaskHeartbeatIntervalproperty of WorkerSettings.config file. However, before this improvement the minimuminterval value is not less than 10 seconds.
This improvement is included in the following cumulative update for SQL Server:
About cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server: