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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.
DBMIRROR_DBM_MUTEX
Category: Idle
SQL Server versions: 2005, 2008, 2008 R2, 2012, 2014, 2016, 2017
This is an idle wait and so it can be safely ignored.
What is DBMIRROR_DBM_MUTEX?
1 Answer
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answered 3318 days ago
Spotlight Essentials
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This wait never occurs for most instances
For each of 4207 instances, we ranked DBMIRROR_DBM_MUTEX on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.
Prevalence of DBMIRROR_DBM_MUTEX across the Spotlight Population
For 85 % of hours with this wait, average wait time is less than 14 seconds
For each instance, we found all the recent hours when it had a DBMIRROR_DBM_MUTEX wait. We found the average latency for each of those hours.
13 instances contributed data to this chart