Waitopedia is a comprehensive resource of information about SQL Server waits.
The description shown below is the top answer as voted by the Spotlight community.
The charts are based on 2.1 TB of data collected from 4207 instances uploaded by 323 Spotlight users over an 8 week period.
This wait never occurs for most instances
For each of 4207 instances, we ranked PREEMPTIVE_SP_SERVER_DIAGNOSTICS on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.
For 93 % of hours with this wait, average wait time is around 980 ms
For each instance, we found all the recent hours when it had a PREEMPTIVE_SP_SERVER_DIAGNOSTICS wait. We found the average latency for each of those hours.
16 instances contributed data to this chart