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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.

BROKER_MASTERSTART

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

What is BROKER_MASTERSTART?

2 Answers

 

Occurs when a task is waiting for the primary event handler of the Service Broker to start. This should occur very briefly. Information from Microsoft®

 

This wait type is charged only during instance start up, when Service Broker is waiting for master database to start up.

Waiting_tasks_count should be just 1 and wait_time_ms should be really small for this wait type. Source: http://blogs.msdn.com/b/sql_service_broker/archive/2008/12/01/service-broker-wait-types.aspx

Never

This wait has never occurred recently

BROKER_MASTERSTART has not occurred recently on 4207 instances checked.

Prevalence of BROKER_MASTERSTART across the Spotlight Population