For the last few days the service broker command which run from master database is consuming much more RESOURCES than before. The Impact on the Database is high (from the bad side), It causes for internal waits. I didn't make any changes in the database before and after the 10.07.2014 (you can see this start date in the graph). I checked if service broker is enabled in any database and found that it is, in Tempdb & Msdb. What can cause these changes ?
I attached a graph, you can see the behavior change.
i attached another screen shot as you can see from sp_who2, what i don't understand is, you can see that the "LastBatch" is in the very old , from the 10/12 07:55 (this results are from today 10/20/2014 10:23 Local time). why the session not closed . ?