MDW SQL Data collector, large number of SPIDs

Hi all,

I've installed the MDW (Mangement Data Warehouse) database on our central monitoring SQL Server. I've then added a number of servers to be monitored. The data is collected on the servers that are being monitored and uploaded to the central MDW Monitoring server.

On the servers that are being monitored, I'm seeing a large number (over 1000) of SPIDs being generated by 'SQL Server Data Collector'.

Is this normal behaviour? I've seen more blocking as a result of this.

Is there any way to reduce the number of SPIDs generated?