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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.
FFT_NSO_DB_LIST
What is FFT_NSO_DB_LIST?
This wait never occurs for most instances
For each of 4207 instances, we ranked FFT_NSO_DB_LIST on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.
Prevalence of FFT_NSO_DB_LIST across the Spotlight Population
For 95 % of hours with this wait, average wait time is less than 0.0027 ms
For each instance, we found all the recent hours when it had a FFT_NSO_DB_LIST wait. We found the average latency for each of those hours.
13 instances contributed data to this chart