Tracking page allocations / freed for MEMORYCLERK_SOSNODE

tracememobj.sql

IF EXISTS(SELECT * FROM sys.server_event_sessions WHERE name='TraceMemObj')
    DROP EVENT SESSION [TraceMemObj] ON SERVER
GO

CREATE EVENT SESSION [TraceMemObj] ON SERVER 
ADD EVENT sqlos.page_allocated(
    ACTION(package0.callstack)
	WHERE (memory_clerk_name = 'MEMORYCLERK_SOSNODE')
	),
ADD EVENT sqlos.page_freed(
    ACTION(package0.callstack)
	WHERE (memory_clerk_name = 'MEMORYCLERK_SOSNODE')
	)
ADD TARGET package0.histogram  
(SET source_type=1,
     source=N'package0.callstack')
WITH (MAX_MEMORY=32768 KB,EVENT_RETENTION_MODE=ALLOW_SINGLE_EVENT_LOSS,
MAX_DISPATCH_LATENCY=5 SECONDS,MAX_EVENT_SIZE=0 KB,MEMORY_PARTITION_MODE=PER_CPU,TRACK_CAUSALITY=OFF,STARTUP_STATE=OFF)
GO

ALTER EVENT SESSION [TraceMemObj] on server state = start
GO

-- wait for a sizeable duration (depends on the problem - could vary from a minute to maybe an hour?) for the problem to repro, and then run the below query. Save the XML data into a file. These raw stacks can then be symbolized using SQLCallStackResolver (https://aka.ms/sqlstack).
SELECT event_session_address,
       target_name,
       execution_count,
       CAST (target_data AS XML) AS MemObjData
FROM   sys.dm_xe_session_targets AS xst
       INNER JOIN
       sys.dm_xe_sessions AS xs
       ON (xst.event_session_address = xs.address)
WHERE  xs.name = 'TraceMemObj';
GO

-- Then stop the session
-- ALTER EVENT SESSION [TraceMemObj] on server state = stop

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