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.


Category: Idle
SQL Server versions: 2008, 2008 R2, 2012, 2014, 2016, 2017

This is an idle wait and so it can be safely ignored.


2 Answers


Full-text is waiting on an fdhost control operation. Documented for informational purposes only. Not supported. Future compatibility is not guaranteed. Information from Microsoft®


Any advice on this wait? its the top one on of the servers that has FT enabled!

Very rare

This wait never occurs for most instances

For each of 4207 instances, we ranked FT_IFTSHC_MUTEX on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.

Prevalence of FT_IFTSHC_MUTEX across the Spotlight Population

For 80 % of hours with this wait, average wait time is less than 5.4 minutes

For each instance, we found all the recent hours when it had a FT_IFTSHC_MUTEX wait. We found the average latency for each of those hours.

105 instances contributed data to this chart

Latency Distribution of FT_IFTSHC_MUTEX across the Spotlight Population