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  2. HADR_AR_MANAGER_MUTEX

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.

HADR_AR_MANAGER_MUTEX

Category: Other
SQL Server versions: 2012, 2014, 2016, 2017

What is HADR_AR_MANAGER_MUTEX?

1 Answer

 

Occurs when an availability replica shutdown is waiting for startup to complete or an availability replica startup is waiting for shutdown to complete. Internal use only.

Availability replica shutdown is initiated either by SQL Server shutdown or by SQL Server handling the loss of quorum by the Windows Server Failover Clustering node. Availability replica startup is initiated either by SQL Server startup or by SQL Server recovering from the loss of quorum by the Windows Server Failover Clustering node. Information from Microsoft®
Very rare

This wait never occurs for most instances

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

Prevalence of HADR_AR_MANAGER_MUTEX across the Spotlight Population

For 80 % of hours with this wait, average wait time is less than 120 ms

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

5 instances contributed data to this chart

Latency Distribution of HADR_AR_MANAGER_MUTEX across the Spotlight Population