What does the wait type PREEMPTIVE_OS_AUTHORIZATIONOPS mean?
I have a service which is executing a stored procedure to log historical data. It has been running fine for a few months. Out of the blue I found we were no longer logging data and the service calls to SQL were timeing out because the connection pool was full. The activity monitor showed hundreds of processes with that wait type, no wait resource and no block by.
The only google hits on it talk about this being added in 2008.
I don't have a specific answer for you, but I hope this helps.
You can find a nice overview of waits here: http://www.digitalconcourse.com/dropzone/MSCOMM/PASSMN/PASSEVT20090616/Joe%20Sack%20Performance%20Troubleshooting%20with%20Wait%20Stats.pdf
The author (a Microsoft Dedicated Support Engineer) explains:
He breaks down the preemptive wait type naming convention like this:
"API function or call can often be found on MSDN"
answered Nov 02, 2009 at 05:17 PM