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


Occurs when a background thread that is used for Extended Events sessions is waiting for event buffers to process. Information from Microsoft®


Used by a background worker to handle queue requests to write out buffers for async targets

Very rare

This wait never occurs for most instances

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

Prevalence of XE_DISPATCHER_WAIT across the Spotlight Population

For 34 % of hours with this wait, average wait time is around 4.7 seconds

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

1142 instances contributed data to this chart

Latency Distribution of XE_DISPATCHER_WAIT across the Spotlight Population