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.
PREEMPTIVE_OS_FILEOPS
What is PREEMPTIVE_OS_FILEOPS?
This wait is somewhat common for most instances
For each of 4207 instances, we ranked PREEMPTIVE_OS_FILEOPS on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.
Prevalence of PREEMPTIVE_OS_FILEOPS across the Spotlight Population
For 47 % of hours with this wait, average wait time is less than 1.1 ms
For each instance, we found all the recent hours when it had a PREEMPTIVE_OS_FILEOPS wait. We found the average latency for each of those hours.
3090 instances contributed data to this chart