BROKER_TASK_STOP Wait Type in SQL Server

Part of the SQL Server Wait Types Library.
Related deep dive: SOS_SCHEDULER_YIELD Wait Type.

---

BROKER_TASK_STOP is recorded when a Service Broker internal task handler waits (up to ten seconds at a time) to shut itself down because there are no Broker tasks, message transmission, receipt, or other asynchronous network operations, for it to handle. The shutdown check is serialised, hence a wait type for it.

Its accumulation follows a predictable clock: Broker schedules a background cleanup every five seconds when in use, so this wait grows steadily whether Broker is busy or idle.

Is It a Problem?

No; it is a benign lifecycle wait for Broker’s task handler pool and belongs on the filter list. Its steady growth (five seconds per five seconds when Broker is used, ten-second increments otherwise) is timer arithmetic, not workload signal.

Broker health questions route elsewhere, as ever: sys.transmission_queue for delivery, activation procedure errors in the error log, conversation counts for leaks.

Common Causes

• Service Broker’s task handler lifecycle running its shutdown checks on schedule.
• Instances with Broker enabled databases (including msdb, which uses Broker internally).

What To Do

1. Filter it out of wait analysis.
2. Nothing else; the handler pool manages itself.

How To See It

Rank waits with Get-WaitStatistics, where it is filtered as Broker background noise.

---